summaryrefslogtreecommitdiffstats
path: root/release_docs/HISTORY-1_8.txt
blob: 1d983524282e13e34c63c9f832a9d9efe9293a97 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
HDF5 History
============

This file contains development history of HDF5 1.8 branch

13.      Release Information for hdf5-1.8.11
12.      Release Information for hdf5-1.8.10-patch1
11.      Release Information for hdf5-1.8.10
10.      Release Information for hdf5-1.8.9
09.      Release Information for hdf5-1.8.8
08.      Release Information for hdf5-1.8.7
07.      Release Information for hdf5-1.8.6
06.      Release Information for hdf5-1.8.5
05.      Release Information for hdf5-1.8.4
04.      Release Information for hdf5-1.8.3
03.      Release Information for hdf5-1.8.2
02.      Release Information for hdf5-1.8.1
01.      Release Information for hdf5-1.8.0

[Search on the string '%%%%' for section breaks of each release.]

%%%%1.8.11%%%%   

HDF5 version 1.8.11 released on 2013-05-08
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.10 and 
HDF5-1.8.11-*, and contains information on the platforms tested and 
known problems in HDF5-1.8.11-*. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.11 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.11 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.11 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.11 (current 
release) versus Release 1.8.10":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.10
- Supported Platforms
- Supported Configuration Features Summary
- More Tested Platforms
- Known Problems


New Features
============

    Configuration
    -------------
    - Libtool version number is changed to 8.0.0 because there are API
      changes. See below for details. (AKC - 2013/05/07 HDFFV-8435)
    - Mac OS X 10.7 (Lion) and 10.8 (Mountain Lion) uses clang/clang++ as the
      default C and C++ compilers. (AKC - 2013/04/19 HDFFV-8245)
    - CMake minimum is now 2.8.10. (ADB 2013/1/14)
    - A new tool, cmakehdf5, which is a build command script similar to
      buildhdf5 is added and is available in the bin directory.
      (AKC - 2013/01/16 HDFFV-8336)
    
    Library
    -------
    - The library can load filter libraries dynamically during runtime.  Users
      can set the search path through environment variable HDF5_PLUGIN_PATH 
      and call H5Pset_filter to enable a dynamic filter. (SLU - 2013/04/08)
    - Added new API functions H5Dscatter and H5Dgather to scatter data to and
      and gather data from a selection within a memory buffer.
      (NAF - 2013/02/05)
    - The library now supports the data conversion from enumeration to numeric
      (integer and floating-point number) datatypes. See Issue HDFFV-8221.
      (SLU - 2012/10/23)
 
    Parallel Library
    ----------------
    - None
 
    Tools
    -----
    - h5dump: added new option -O or -ddl to output the ddl text to a file. This
      is a complement to the -o or --output option, which redirects the data to
      a file. HDFFV-8229 (ADB - 2013/2/25)

    High-Level APIs
    ---------------
    - A new API function, H5DOwrite_chunk.  This function writes a data chunk 
      directly into a file, bypassing hyperslab selection, data conversion, 
      and the filter pipeline.  The user must be careful with the function and
      clearly understand the I/O process of the library. (SLU - 2013/2/11)

    Fortran API
    -----------
    - New API functions added (MSB - 2013/3/23):

      h5odecr_refcount_f, h5oexists_by_name_f, h5oget_comment_f,
      h5oget_comment_by_name_f, h5oincr_refcount_f, h5oopen_by_idx_f, 
      h5oset_comment_f, h5oset_comment_by_name_f, h5oset_comment_by_name_f

      F2003: h5oget_info_f, h5oget_info_by_idx_f, h5ovisit_by_name_f
    

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - SunOS 5.11 (emu) 32-bit and 64-bit with Sun C/C++ 5.12 compiler and
      Sun Fortran 95 8.6 compiler.
    - Visual Studio 2012 w/ Intel Fortran 13 on Windows 7
    - g95 released new version recently and is tested in this release.

Bug Fixes since HDF5-1.8.10
==========================

    Configuration
    -------------
    - Fixed Thread-safe configure failure for the AIX platform.
      (AKC - 2013/04/19 HDFFV-8390)
    - Configure will check the result of header searches before searching for
      the library. 
      Fixes HDFFV-8257 (ADB 2013/03/04)
    - HDF does not support building SHARED Fortran libraries on OSX. Added 
      CMake code to check for this condition. 
      Fixes HDFFV-8227 (ADB 2013/03/04)
    - CMake builds on Windows will no longer use legacy naming for libraries. 
      The "dll" tag will no longer be added to the name of *.lib and *.dll.
      The option HDF_LEGACY_NAMING is now OFF by default.
      Fixes HDFFV-8292 (ADB 2013/01/30)

    Library
    -------
    - The library now behaves correctly when performing large I/O operations 
      on Mac OS-X.  Previously, single I/O operations > 2 GB would fail 
      since the Darwin read/write calls cannot handle the number of bytes 
      that their parameter types imply.
      Fixes HDFFV-7975 and HDFFV-8240 (DER 2013/01/07)
    - Fixed a bug in the core VFD that causes failures when opening files 
      > 2 GB.
      Fixes HDFFV-8124 and HDFFV-8158 (DER 2013/01/07)
    - Fixed a bug where unintialized memory was read during variable-length
      type conversion.  This caused segfaults in netCDF.  Fixes HDFFV-8159.
      (DER 2013/03/30)
    - Removed the H5Pset/get_dxpl_multi functions from the library.  The
      intended functionality for them was never fully implemented, and they
      have always been fundamentally broken.  NOTE: This does not affect 
      setting the multi VFD or any expected VFD functionality.  Multi VFD 
      usage remains unchanged.  
      Fixes HDFFV-8296.  (DER 2013/03/30)

    Parallel Library
    ----------------
    - None

    Performance
    -------------
    - None

    Tools
    -----
    - h5redeploy is changed to do this by default:
	Installation directories:
	prefix       architecture-independent files.
	exec_prefix  architecture-dependent files, default is <prefix>.
	libdir       libraries, default is <exec_prefix>/lib.
	includedir   header files, default is <prefix/include>.
      This allows users to just change the first line of prefix=<...> and the
      effect will change libdir and includedir too.  (AKC 2013/04/05 HDFFV-8358)
    - h5repack: Fixed failure to convert the layout of a small chunked 
      dataset (size < 1K) to contiguous layout.  HDFFV-8214 (JKM 2013/03/26)
    - h5dump: Fixed displaying compression ratio for unknown or user-defined 
      filters. HDFFV-8344 (XCAO 2013/03/19)
    - h5dump: Changed UNKNOWN_FILTER to USER_DEFINED_FILTER for user defined 
      filter. HDFFV-8346 (XCAO 2013/03/19)
    - h5diff: Fixed to return the correct exit code 1 when the program 
      detects a unique extra attribute. Prior to this fix, h5diff returned 
      exit code 0 indicating the two files are identical.   
      HDFFV-7643 (JKM 2013/02/15)
    - h5dump: Fixed writing nulls to a binary file when exporting a dataset
      with compound string datatype. HDFFV-8169 (ADB 2013/1/31)
    - The following h5stat test case failed in BG/P machines (and potentially
      other machines that display extra output if an MPI task returns with a
      non-zero code.)
        Testing h5stat notexist.h5
      The test script was fixed to ignore the extra output.  HDFFV-8233 
      (AKC - 2012/11/30)
    - h5diff: Improved speed when comparing HDF5 files with lots of
      attributes. Much slower performance was identified with release versions 
      from 1.8.7 to 1.8.10 compared to 1.8.6. (JKM 2012/10/19)

    F90 API
    -------
    - The integer type of the 'offset' argument in h5pset_external_f and
      h5pget_external_f was changed to INTEGER(KIND=OFF_T) to support 8-byte
      integers, matching the C type definition of off_t. (MSB - 2013/3/23)
    - h5fc updated to recognize .f95, .f03 and .f08 file extensions. 

    C++ API
    ------
    - The C++ wrappers DSetMemXferPropList::setMulti/getMulti were removed 
      because the C functions H5Pset/get_dxpl_multi functions are removed 
      from the library. Fixes HDFFV-8296 by DER.  (BMR 2013/03/30)
    - An exception thrown by an internal function was not propagating to the
      test program during stack unwinding, so it couldn't be caught by the
      test, and the program terminated "without an active exception."  It 
      seemed that the problem happened when c_str() was used to generate 
      an equivalent const char* from a std::string and the resulting string 
      was passed to the internal function.  As a work-around, we added a 
      try/catch around the the call to the internal function and when the 
      exception is caught there, it is re-thrown.  Fixes HDFFV-8067.  
      (BMR 2013/03/30)

    High-Level APIs:
    ------
    - Fixed a problem with H5DSget_scale_name including the NULL terminator 
      in the size calculation returned by the function. The API was changed 
      to NOT include the NULL terminator in the size of name returned 
      (MSB- 2013/2/10)

    Fortran High-Level APIs:
    ------
    - None

    Testing
    -------
    - In some Mac systems, testlibinfo.sh failed with this error:
         Check file ../src/.libs/libhdf5.7.dylib
         strings: object: ../src/.libs/libhdf5.7.dylib malformed object \
         (unknown load command 15)
      The strings command of Mac systems inspects library files, and older
      versions of strings may not know newer library formats, resulting
      in errors.  Fixed by sending the library file as stdin to the strings
      command to avoid this problem. (AKC - 2013/03/08 HDFFV-8305)
    - Fixed a typo in the ERROR macro in test/testhdf5.h. It segmentation
      faulted when used before. (AKC - 2013/02/12 HDFFV-8267)

Supported Platforms
===================
The following platforms are supported and have been tested for this release.
They are built with the configure process unless specified otherwise.

    AIX 5.3                       xlc 10.1.0.5
    (NASA G-ADA)                  xlC 10.1.0.5
                                  xlf90 12.1.0.6

    Linux 2.6.18-308.13.1.el5PAE  GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP i686 i686 i386         compilers for 32-bit applications;
    (jam)                             Version 4.1.2 20080704 (Red Hat 4.1.2-54)
                                      Version 4.6.3
                                  PGI C, Fortran, C++ Compilers for 32-bit
                                  applications;
                                      Version 11.9-0
                                      Version 12.5-0
                                  Intel(R) C, C++, Fortran Compiler for 32-bit
                                  applications;
                                      Version 12.1 (Build 20110811)
                                      Version 12.1 (Build 20120212)

    Linux 2.6.18-308.16.1.el5     GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP x86_64 GNU/Linux       compilers for 64-bit applications;
    (koala)                           Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.6.3
                                  PGI C, Fortran, C++ for 64-bit target on 
                                  x86-64;
                                      Version 11.9-0 
                                      Version 12.5-0
                                  Intel(R) C, C++, Fortran Compilers for 
                                  applications running on Intel(R) 64; 
                                      Version 12.1 (Build 20110811)
                                      Version 12.1 (Build 20120212)

    Linux 2.6.32-358.2.1.el6      GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP x86_64 GNU/Linux       compilers:
    (platypus)                       Version 4.4.7 20120313
                                  Intel(R) C (icc), C++ (icpc), Fortran (icc)
                                  compilers:
                                     Version 12.1 20120212

    Linux 2.6.32-358.2.1.el6.ppc64 gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)
    #1 SMP ppc64 GNU/Linux        g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)
    (ostrich)                     GNU Fortran (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)
                                  IBM XL C/C++ V11.1
                                  IBM XL Fortran V13.1

    SunOS 5.11 32- and 64-bit     Sun C 5.12 SunOS_sparc
    (emu)                         Sun Fortran 95 8.6 SunOS_sparc
                                  Sun C++ 5.12 SunOS_sparc

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Visual Studio 2012 w/ Intel Fortran 13 (cmake)
                                  Cygwin(CYGWIN_NT-6.1 1.7.15(0.260/5/3) gcc(4.5.3) compiler and gfortran)
                                  (cmake and autotools)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Visual Studio 2012 w/ Intel Fortran 13 (cmake)
                                  Cygwin(CYGWIN_NT-6.1 1.7.15(0.260/5/3) gcc(4.5.3) compiler and gfortran)
                                  (cmake and autotools)

    Mac OS X Snow Leopard 10.6.8  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Darwin Kernel Version 10.8.0  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    64-bit                        gfortran GNU Fortran (GCC) 4.6.2
    (fred)                        Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1 Build 20120928

    Mac OS X Lion 10.7.3          Apple clang/clang++ version 3.0 from Xcode 4.6.1
    64-bit                        gfortran GNU Fortran (GCC) 4.6.2
    (duck)                        Intel icc/icpc/ifort version 13.0

    Mac OS X Mountain Lion 10.8.1 Apple clang/clang++ version 4.2 from Xcode 4.6.1
    64-bit    			  gfortran GNU Fortran (GCC) 4.6.2
    (wren)                        Intel icc/icpc/ifort version 13.0.1.119


Tested Configuration Features Summary
=====================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                              C         F90/   F90      C++  zlib  SZIP
                                      parallel  F2003  parallel
Solaris2.11 32-bit                      n        y/y    n        y    y     y
Solaris2.11 64-bit                      n        y/n    n        y    y     y
Windows 7                               y        y/y    n        y    y     y
Windows 7 x64                           y        y/y    n        y    y     y
Windows 7 Cygwin                        n        y/n    n        y    y     y
Windows 7 x64 Cygwin                    n        y/n    n        y    y     y
Mac OS X Snow Leopard 10.6.8 64-bit     n        y/y    n        y    y     y
Mac OS X Lion 10.7.3 64-bit             n        y/y    n        y    y     y
Mac OS X Mountain Lion 10.8.1 64-bit    n        y/y    n        y    y     y
AIX 5.3 32- and 64-bit                  n        y/n    n        y    y     y
CentOS 5.9 Linux 2.6.18-308 i686 GNU    y        y/y    y        y    y     y
CentOS 5.9 Linux 2.6.18-308 i686 Intel  n        y/y    n        y    y     y
CentOS 5.9 Linux 2.6.18-308 i686 PGI    n        y/y    n        y    y     y
CentOS 5.9 Linux 2.6.18 x86_64 GNU      y        y/y    y        y    y     y
CentOS 5.9 Linux 2.6.18 x86_64 Intel    n        y/y    n        y    y     y
CentOS 5.9 Linux 2.6.18 x86_64 PGI      n        y/y    n        y    y     y
CentOS 6.4 Linux 2.6.32 x86_64 GNU      n        y/n    n        y    y     y
CentOS 6.4 Linux 2.6.32 x86_64 Intel    n        y/y    n        y    y     y
Linux 2.6.32-358.2.1.el6.ppc64          n        y/n    n        y    y     y


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.11 32-bit                         y       y         y         y        
Solaris2.11 64-bit                         y       y         y         y        
Windows 7                                  y       y         y         y
Windows 7 x64                              y       y         y         y
Windows 7 Cygwin                           n       n         n         y
Windows 7 x64 Cygwin                       n       n         n         y
Mac OS X Snow Leopard 10.6.8 64-bit        y       n         y         n        
Mac OS X Lion 10.7.3 64-bit                y       n         y         y        
Mac OS X Mountain Lion 10.8.1 64-bit       y       n         y         y        
AIX 5.3 32- and 64-bit                     y       n         n         y        
CentOS 5.9 Linux 2.6.18-308 i686 GNU       y       y         y         y        
CentOS 5.9 Linux 2.6.18-308 i686 Intel     y       y         y         n        
CentOS 5.9 Linux 2.6.18-308 i686 PGI       y       y         y         n        
CentOS 5.9 Linux 2.6.18 x86_64 GNU         y       y         y         y        
CentOS 5.9 Linux 2.6.18 x86_64 Intel       y       y         y         n        
CentOS 5.9 Linux 2.6.18 x86_64 PGI         y       y         y         n     
CentOS 6.4 Linux 2.6.32 x86_64 GNU         y       y         y         n
CentOS 6.4 Linux 2.6.32 x86_64 Intel       y       y         y         n
Linux 2.6.32-358.2.1.el6.ppc64             y       y         y         n 

Compiler versions for each platform are listed in the preceding
"Supported Platforms" table.


More Tested Platforms
=====================
The following platforms are not supported but have been tested for this release.

    Linux 2.6.18-308.13.1.el5PAE  MPICH mpich2-1.4.1p1 compiled with
    #1 SMP i686 i686 i386             gcc 4.1.2 and gfortran 4.1.2
    (jam)                         g95 (GCC 4.0.3 (g95 0.94!)

    Linux 2.6.18-308.16.1.el5     MPICH mpich2-1.4.1p1 compiled with
    #1 SMP x86_64 GNU/Linux           gcc 4.1.2 and gfortran 4.1.2
    (koala)                       g95 (GCC 4.0.3 (g95 0.94!)
                                  
    FreeBSD 8.2-STABLE i386       gcc 4.2.1 [FreeBSD] 20070719
    (loyalty)                     gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    FreeBSD 8.2-STABLE amd64      gcc 4.2.1 [FreeBSD] 20070719
    (freedom)                     gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    Debian6.0.7 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5
                                  (cmake and autotools)

    Fedora18 3.7.9-205.fc18.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.7.2 20121109 (Red Hat 4.7.2-8)
                                  GNU Fortran (GCC) 4.7.2 20120507 (Red Hat 4.7.2-8)
                                  (cmake and autotools)

    SUSE 12.3 3.7.10-1.1-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.7.2
                                  GNU Fortran (SUSE Linux) 4.7.2 
                                  (cmake and autotools)

    Ubuntu 12.10 3.5.0-25-generic #39-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2
                                  GNU Fortran (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2
                                  (cmake and autotools)
    
    Cray Linux Environment (CLE)  PrgEnv-pgi/4.0.46
    hopper.nersc.gov              pgcc 12.5-0 64-bit target on x86-64 Linux -tp shanghai
                                  pgf90 12.5-0 64-bit target on x86-64 Linux -tp shanghai
                                  pgCC 12.5-0 64-bit target on x86-64 Linux -tp shanghai


Known Problems
==============

* When building using the Cray compilers on Cray machines, HDF5
  configure mistakenly thinks the compiler is an intel compiler and
  sets the -std=c99 flag which breaks configure on Cray. To build HDF5
  properly on a Cray machine, please consult with the instructions in
  INSTALL_parallel for building on Hopper.
  (MSC - 2013/04/26 - HDFFV-8429)

* The h5dump and h5diff utilities occasionally produce different output
  between Linux and Windows systems. This is caused by lower-level library
  routines that fail to write fill values to the user's buffer when reading
  unallocated chunks from datasets that have a fill value set to
  H5D_FILL_VALUE_DEFAULT. Due to platform differences the return of
  spurious data values has only been encountered on Windows 32-bit systems.
  (Issue HDFFV-8247; JP - 2013/03/27)

* The 5.9 C++ compiler on Sun failed to compile a C++ test ttypes.cpp.  It 
  complains with this message:
      "/home/hdf5/src/H5Vprivate.h", line 130: Error: __func__ is not defined.
  
  The reason is that __func__ is a predefined identifier in C99 standard.  The
  HDF5 C library uses it in H5private.h.  The test ttypes.cpp includes 
  H5private.h (H5Tpkg.h<-H5Fprivate.h<-H5Vprivate.h<-H5private.h).  Sun's 5.9
  C++ compiler doesn't support __func__, thus fails to compile the C++ test.
  But Sun's 5.11 C++ compiler does.  To check whether your Sun C++ compiler 
  knows this identifier, try to compile the following simple C++ program:
      #include<stdio.h>

      int main(void)
      {
          printf("%s\n", __func__);
          return 0;
      }
  (SLU - 2012/11/5)

* The C++ and FORTRAN bindings are not currently working on FreeBSD with the
  native release 8.2 compilers (4.2.1), but are working with gcc 4.6 from the
  ports (and probably gcc releases after that).
  (QAK - 2012/10/19)

* The following h5dump test case fails in BG/P machines (and potentially other
  machines that use a command script to launch executables):

   h5dump --no-compact-subset -d "AHFINDERDIRECT::ah_centroid_t[0] it=0 tl=0"
     tno-subset.h5
  
  This is due to the embedded spaces in the dataset name being interpreted
  by the command script launcher as meta-characters, thus passing three
  arguments to h5dump's -d flag. The command passes if run by hand, just
  not via the test script.
  (AKC - 2012/05/03)

* On hopper, the build failed when RUNSERIAL and RUNPARALLEL are set
  to aprun -np X, because the H5lib_settings.c file was not generated
  properly. Not setting those environment variables works, because
  configure was able to automatically detect that it's a Cray system
  and used the proper launch commands when necessary. 
  (MSC - 2012/04/18)

* The data conversion test dt_arith.c fails in "long double" to integer
  conversion on Ubuntu 11.10 (3.0.0.13 kernel) with GCC 4.6.1 if the library
  is built with optimization -O3 or -O2.  The older GCC (4.5) or newer kernal
  (3.2.2 on Fedora) doesn't have the problem.  Users should lower the 
  optimization level (-O1 or -O0) by defining CFLAGS in the command line of 
  "configure" like:

      CFLAGS=-O1 ./configure

  This will overwrite the library's default optimization level.
  (SLU - 2012/02/07 - HDFFV-7829)
  This issue is no longer present on Ubuntu 12.10 (3.5.0 kernel) with 
  gcc 4.7.2.

* The STDIO VFD does not work on some architectures, possibly due to 32/64
  bit or large file issues.  The basic STDIO VFD test is known to fail on
  64-bit SunOS 5.10 on SPARC when built with -m64 and 32-bit OS X/Darwin
  10.7.0.  The STDIO VFD test has been disabled while we investigate and
  a fix should appear in a future release.
  (DER - 2011/10/14 - HDFFV-8235)

* h5diff can report inconsistent results when comparing datasets of enum type
  that contain invalid values.  This is due to how enum types are handled in
  the library and will be addressed in a future release.
  (DER - 2011/10/14 - HDFFV-7527)

* The links test can fail under the stdio VFD due to some issues with external
  links.  This will be investigated and fixed in a future release.
  (DER - 2011/10/14 - HDFFV-7768)

* After the shared library support was fixed for some bugs, it was discovered
  that "make prefix=XXX install" no longer works for shared libraries. It
  still works correctly for static libraries. Therefore, if you want to
  install the HDF5 shared libraries in a location such as /usr/local/hdf5,
  you need to specify the location via the --prefix option during configure 
  time. E.g, ./configure --prefix=/usr/local/hdf5 ...
  (AKC - 2011/05/07 - HDFFV-7583)

* The parallel test, t_shapesame, in testpar/, may run for a long time and may
  be terminated by the alarm signal.  If that happens, one can increase the
  alarm seconds (default is 1200 seconds = 20 minutes) by setting the
  environment variable, $HDF5_ALARM_SECONDS, to a larger value such as 3600
  (60 minutes).  Note that the t_shapesame test may fail in some systems 
  (see the "While working on the 1.8.6 release..." problem below).  If 
  it does, it will waste more time if $HDF5_ALARM_SECONDS is set
  to a larger value.
  (AKC - 2011/05/07)

* The C++ and FORTRAN bindings are not currently working on FreeBSD.
  (QAK - 2011/04/26)

* Shared Fortran libraries are not quite working on AIX. While they are
  generated when --enable-shared is specified, the fortran and hl/fortran
  tests fail. We are looking into the issue. HL and C++ shared libraries
  should now be working as intended, however.
  (MAM - 2011/04/20)

* The --with-mpe configure option does not work with Mpich2.
  (AKC - 2011/03/10)

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or file systems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/
  (NAF - 2011/01/19)

* The library's test dt_arith.c showed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to
  skip this test until we can solve the problem.
  (SLU - 2010/05/05 - HDFFV-1264)

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added in.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug in 1.8 library.  Because there's only one user 
  complaining about it, we (Elena, Quincey, and I) decided to leave it as 
  it is (see bug report #1279).  Quincey will make a plan for 1.10.
  (SLU - 2010/02/02)

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.
  (MAM - 2009/11/04)
  
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO.
  (CMC - 2009/04/28)

* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  (SLU - 2005/06/30)


%%%%1.8.10-patch1%%%%   

HDF5 version 1.8.10-patch1 released on 2013-01-22
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.9 and 
HDF5 1.8.10, and contains information on the platforms tested and 
known problems in HDF5-1.8.10. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.10 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.10 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.10 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.10 (current 
release) versus Release 1.8.9":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.10
- Bug Fixes since HDF5-1.8.9
- Supported Platforms
- Supported Configuration Features Summary
- More Tested Platforms
- Known Problems


New Features
============

    Configuration
    -------------
    - A new tool, cmakehdf5, which is a build command script similar to
      buildhdf5 is added and is available in the bin directory.
      (AKC - 2013/01/21)

    Library
    -------
    - Updated to latest autotools and changed all hard *.sh scripts to
      configure managed *.sh.in files. Removed overloading of autotools
      TESTS variable by examples and tests. Renamed configure.in to
      configure.ac. (ADB - 2012/08/23 - HDFFV-8129)
    - The data sieve buffer size was set for all the datasets in the file.  It
      could waste memory if any dataset size is smaller than the sieve buffer
      size.  Now the library picks the smaller one between the dataset size
      and the sieve buffer size from the file access property. See Issue 7934.
      (SLU - 2012/4/11)
 
    Parallel Library
    ----------------
    - Added the H5Pget_mpio_no_collective_cause() function that retrieves 
      reasons why the collective I/O was broken during read/write IO access. 
      (JKM - 2012/08/30 HDFFV-8143)

    - Added H5Pget_mpio_actual_io_mode_f (MSB - 2012/09/27)
 
    Tools
    -----
    - h5import: Changed to allow the use of h5dump output as input files to 
      h5import. h5dump must include the "-p" option to print the properties; 
      configuration file is captured output of h5dump. The restrictions are 
      that only one dataset with a simple datatype (integer, floating-point, 
      or string) can be processed. Integers and floating-point imports from 
      h5dump must use the "binary" option for the data file. The string version 
      uses the h5dump "-y --width=1" options to disable the indexing printouts, 
      print single columns, and obviously NOT use the "binary" option. 
      (ADB - 2012/07/19 HDFFV-721)

    High-Level APIs
    ---------------
    - None

    Fortran API
    -----------
    - Fixed a typo in return value of the nh5dread_f_c function (was 1 
      instead of 0 on success); fixed the return value to make it consistent
      with other Fortran functions; cleaned debug statements from the code.
      (EIP - 2012/06/23)

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - None

Bug Fixes since HDF5-1.8.10
===========================
    Library
    -------
    - The library now behaves correctly when performing large I/O operations on
      Mac OS-X.  Previously, single I/O operations > 2 GB would fail since the
      Darwin read/write calls cannot handle the number of bytes that their
      parameter types imply.
      Fixes HDFFV-7975 and HDFFV-8240 (DER - 07 JAN 2013)
    - Fixed a bug in the core VFD that cause failures when opening files > 2 GB.
      Fixes HDFFV-8124 and HDFFV-8158 (DER - 07 JAN 2013)

    Tools
    -----
    - The following h5stat test case failed in BG/P machines (and potentially
      other machines that display extra output if an MPI task returns with a
      non-zero code.)
        Testing h5stat notexist.h5
      The test script was fixed to ignore the extra output.
      HDFFV-8233 (AKC - 2012/12/17)
    - h5diff: Fixed slowness when comparing HDF5 files with many attributes. 
      Much slower performance was identified with later release version 
      (from 1.8.7 to 1.8.10) compared to 1.8.6. The issue was introduced 
      from fixing an attribute related bug for 1.8.7 release in the past.
      HDFFV-8145 (JKM 2012/12/13)

    Testing
    -------
    - None

Bug Fixes since HDF5-1.8.9
==========================

    Configuration
    -------------
    - Fixed configure --enable-production to not use -O optimization for Lion
      and Mountain Lion systems when gcc (i686-apple-darwin11-llvm-gcc-4.2
      (GCC) 4.2.1) is used.  Somehow the -O optimization will cause some of
      the hard conversion code in test/dt_arith.c to fail. HDFFV-8017.
      (AKC - 2012/10/10)
    - Fixed AIX Fortran compiler flags to use appropriate settings for
      debugging, profiling, and optimization situations. HDFFV-8069. 
      (AKC 2012/09/27)

    Library
    -------
    - Fixed a memory leak exposed when inserting/removing a property
      from a property list several times. HDFFV-8022. (MSC 2012/05/18)
    - The file_image test will fail in the "initial file image and callbacks in
      the core VFD" sub-test if the source directory is read-only as the test
      fails to create its test files in the build directory. This has been
      fixed. HDFFV-8009 (AKC - 2012/07/06)
  

    Parallel Library
    ----------------
    - The MPI-POSIX VFD was updated to include the POSIX and Windows
      correctness features added that had already been added to the other VFDs.
      HDFFV-8058/7845.  (DER 2012/09/17)

    Performance
    -------------
    - Removed program perform/benchpar from the enable-build-all list.  The
      program will be retired or moved to another location.  HDFFV-8156
      (AKC 2012/10/01)
    - Retired program perform/mpi-perf. Its purpose has been incorporated
      into h5perf. (AKC 2012/09/21)

    Tools
    -----
    - h5repack: "h5repack -f NONE file1.h5 out.h5" command failed if
      source file contains chunked dataset and a chunk dim is bigger than 
      the dataset dim. Another issue is that the command changed max dims
      if chunk dim is smaller than the dataset dim. These issue occurred 
      when dataset size is smaller than 64k (compact size limit)  Fixed both.
      HDFFV-8012 (JKM 2012/09/24)
    - h5diff: Fixed the counter in verbose mode (-v, -r) so that it will no 
      longer add together the differences between datasets and the differences 
      between attributes of those datasets. This change makes the output of 
      verbose mode consistent for datasets, groups, and committed datatypes. 
      HDFFV-5919 (JKM 2012/09/10)
    - h5diff: Fixed the incorrect result when comparing attribute data 
      values and the data type has the same class but different sizes.
      HDFFV-7942  (JKM 2012/08/15)
    - h5dump: Replaced single element fwrite with block writes.
      HDFFV-1208 (ADB 2012/08/13)
    - h5diff: Fixed test failure for "make check" due to failure of 
      copying test files when performed in HDF5 source tree. Also applied
      to other tools.  HDFFV-8107 (JKM 2012/08/01)
    - ph5diff: Fixed intermittent hang issue on a certain operation in 
      parallel mode. It was detected by daily test for comparing 
      non-comparable objects, but it could have occurred in other 
      operations depending on machine condition.  HDFFV-8003 (JKM 2012/08/01)
    - h5diff: Fixed the function COPY_TESTFILES_TO_TESTDIR() of testh5diff.sh
      to better report when there is an error in the file copying.
      HDFFV-8105 (AKC 2012/07/22)
    - h5dump: Fixed the sort by name display to maintain correct parent/child
      relationships between ascending/descending order.
      HDFFV-8095 (ADB 2012/07/12)
    - h5dump: Fixed the display by creation order when using option -n 
      (print contents).
      HDFFV-5942 (ADB 2012/07/09)
    - h5dump: Changed to allow H5T_CSET_UTF8 to be displayed in h5dump output. 
      Used technique similar to what was done in h5ls (matches library 
      options).
      HDFFV-7999 (ADB 2012/05/23)
    - h5diff: Fixed the tool so that it will not check and display the status 
      of dangling links without setting the --follow-symlinks option. This 
      also improved performance when comparing lots of external links without 
      the --follow-symlinks option.  
      HDFFV-7998 (JKM 2012/04/26)

    F90 API
    -------
    
    - Fixed a typo in return value of the nh5dread_f_c function (was 1
      instead of 0 on success); fixed the return value to make it consistent
      with other Fortran functions; cleaned debug statements from the code.
      (EIP - 2012/06/23)

    - Fixed a problem writing/reading control characters to a dataset; writing
      a string containing alerts, backspace, carriage_return, form_feed,
      horizontal_tab, vertical_tab, or new_line is now tested and working.
      (MSB - 2012/09/01)

    - Corrected the integer type of H5S_UNLIMITED_F to HSIZE_T (MSB - 2012/09/01)

    - Corrected the number of continuation lines in the src files
      to be less than 32 lines for F95 compliance. (MSB - 2012/10/01)

    C++ API
    ------
    - None

    High-Level APIs:
    ------

    - Fixed problem with H5TBdelete_record destroying all data following the 
      deletion of a row. (MSB- 2012/7/26)

    - Fixed H5LTget_attribute_string not closing an object identifier when an 
      error occurs. (MSB- 2012/7/21)

    - Corrected the return type of H5TBAget_fill from herr_t to htri_t to 
      reflect that a return value of 1 indicates that a fill value is 
      present, 0 indicates a fill value is not present, and <0 indicates an 
      error.

    Fortran High-Level APIs:
    ------
    - None

Supported Platforms
===================
    AIX 5.3                       xlc 10.1.0.5
    (NASA G-ADA)                  xlC 10.1.0.5
                                  xlf90 12.1.0.6

    Linux 2.6.18-308.13.1.el5PAE  GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP i686 i686 i386         compilers for 32-bit applications;
    (jam)                             Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.6.3
                                  PGI C, Fortran, C++ Compilers for 32-bit
                                  applications;
                                      Version 11.9-0
                                  Intel(R) C, C++, Fortran Compiler for 32-bit
                                  applications;
                                      Version 12.1
                                  MPICH mpich2-1.4.1p1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.18-308.16.1.el5     GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP x86_64 GNU/Linux       compilers for 32-bit applications;
    (koala)                           Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.6.3
                                  PGI C, Fortran, C++ for 64-bit target on 
                                  x86-64;
                                      Version 11.9-0 
                                      Version 12.5-0
                                  Intel(R) C, C++, Fortran Compilers for 
                                  applications running on Intel(R) 64; 
                                      Version 12.1 (Build 20110811)
                                      Version 12.1 (Build 20120212)
                                  MPICH mpich2-1.4.1p1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.32-220.7.1.el6.ppc64 gcc (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3) 
    #1 SMP ppc64 GNU/Linux        g++ (GCC) 4.4.6 20110731 
    (ostrich)                     GNU Fortran (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3)

    Linux 2.6.32-220.23.1.1chaos  Intel C, C++, Fortran Compilers
    ch5.x86_64 GNU/Linux              Version 12.1.5.339
    (LLNL Aztec)

    IBM Blue Gene/P               XL C for Blue Gene/P, bgxlc V9.0
    (LLNL uDawn)                  XL C++ for Blue Gene/P, bgxlC V9.0
                                  XL Fortran for Blue Gene/P, bgxlf90 V11.1

    SunOS 5.10 32- and 64-bit     Sun C 5.9 Sun OS_sparc Patch 124867-16
    (linew)                       Sun Fortran 95 8.3 Sun OS_sparc Patch 127000-13
                                  Sun C++ 5.9 Sun OS_sparc Patch 124863-26
                                  Sun C 5.11 SunOS_sparc
                                  Sun Fortran 95 8.5 SunOS_sparc
                                  Sun C++ 5.11 SunOS_sparc

    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1 (project files)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1 (project files)

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Cygwin(CYGWIN_NT-6.1 1.7.15(0.260/5/3) gcc(4.5.3) compiler and gfortran)
                                  (cmake and autotools)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Cygwin(CYGWIN_NT-6.1 1.7.15(0.260/5/3) gcc(4.5.3) compiler and gfortran)
                                  (cmake and autotools)

    Mac OS X Snow Leopard 10.6.8  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Darwin Kernel Version 10.8.0  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    (fred)                        gfortran GNU Fortran (GCC) 4.6.2
                                  Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1.0.038 Build 20110811

    Mac OS X Snow Leopard 10.6.8  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Darwin Kernel Version 10.8.0  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Intel 32-bit                  gfortran GNU Fortran (GCC) 4.6.1
    (tejeda)                      Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1.0.038 Build 20110811

    Mac OS X Lion 10.7.3          gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 4.2.1
    32- and 64-bit                g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 4.2.1
    (duck)                        gfortran GNU Fortran (GCC) 4.6.2

    Mac OS X Mountain Lion 10.8.1 cc Apple clang version 4.0 from Xcode 4.5.1
    (owl)                         c++ Apple clang version 4.0 from Xcode 4.5.1
				  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 4.5.1
				  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 4.5.1
    			          gfortran GNU Fortran (GCC) 4.6.2


Tested Configuration Features Summary
=====================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                              C         F90/   F90      C++  zlib  SZIP
                                      parallel  F2003  parallel
Solaris2.10 32-bit                      n        y/y    n        y    y     y
Solaris2.10 64-bit                      n        y/n    n        y    y     y
Windows 7                               y        y/n    n        y    y     y
Windows 7     x64                       y        y/n    n        y    y     y
Mac OS X Snow Leopard 10.6.8 32-bit     n        y/y    n        y    y     n 
Mac OS X Snow Leopard 10.6.8 64-bit     n        y/y    n        y    y     y
Mac OS X Lion 10.7.3 32-bit             n        y/y    n        y    y     n
Mac OS X Lion 10.7.3 64-bit             n        y/y    n        y    y     y
Mac OS X Mountain Lion 10.8.1 64-bit    n        y/n    n        y    y     n
AIX 5.3 32- and 64-bit                  y        y/n    y        y    y     y
CentOS 5.5 Linux 2.6.18-308 i686 GNU    y        y/y    y        y    y     y
CentOS 5.5 Linux 2.6.18-308 i686 Intel  n        y/y    n        y    y     y
CentOS 5.5 Linux 2.6.18-308 i686 PGI    n        y/y    n        y    y     y
CentOS 5.5 Linux 2.6.18 x86_64 GNU      y        y/y    y        y    y     y
CentOS 5.5 Linux 2.6.18 x86_64 Intel    n        y/y    n        y    y     y
CentOS 5.5 Linux 2.6.18 x86_64 PGI      n        y/y    n        y    y     y
Linux 2.6.32-220.7.1.el6.ppc64          n        y/n    n        y    y     y


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                         y       y         y         y        
Solaris2.10 64-bit                         n       n         n         n        
Windows 7                                  y       y         y         y
Windows 7 x64                              y       y         y         y
Mac OS X Snow Leopard 10.6.8 32-bit        y       n         y         n        
Mac OS X Snow Leopard 10.6.8 64-bit        y       n         y         n        
Mac OS X Lion 10.7.3 32-bit                y       n         y         y        
Mac OS X Lion 10.7.3 64-bit                y       n         y         y        
Mac OS X Mountain Lion 10.8.1 64-bit       y       n         y         y        
AIX 5.3 32- and 64-bit                     n       n         n         y        
CentOS 5.5 Linux 2.6.18-308 i686 GNU       y       y         y         y        
CentOS 5.5 Linux 2.6.18-308 i686 Intel     y       y         y         n        
CentOS 5.5 Linux 2.6.18-308 i686 PGI       y       y         y         n        
CentOS 5.5 Linux 2.6.18 x86_64 GNU         y       y         y         y        
CentOS 5.5 Linux 2.6.18 x86_64 Intel       y       y         y         n        
CentOS 5.5 Linux 2.6.18 x86_64 PGI         y       y         y         n        
Linux 2.6.32-220.7.1.el6.ppc64             y       y         y         n 

Compiler versions for each platform are listed in the preceding
"Supported Platforms" table.


More Tested Platforms
=====================
The following platforms are not supported but have been tested for this release.

    FreeBSD 8.2-STABLE i386       gcc 4.2.1 [FreeBSD] 20070719
    (loyalty)                     gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    FreeBSD 8.2-STABLE amd64      gcc 4.2.1 [FreeBSD] 20070719
    (freedom)                     gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    Debian6.0.3 2.6.32-5-686 #1 SMP i686 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5
                                  (cmake and autotools)

    Debian6.0.3 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5
                                  (cmake and autotools)

    Fedora17 3.5.2-1.fc17.i6866 #1 SMP i686 i686 i386 GNU/Linux
                                  gcc (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  GNU Fortran (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  (cmake and autotools)

    Fedora17 3.5.2-1.fc17.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  GNU Fortran (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  (cmake and autotools)

    SUSE 12.2 3.4.6-2.10-desktop #1 SMP PREEMPT i686 i686 i386 GNU/Linux
                                  gcc (SUSE Linux) 4.7.1
                                  GNU Fortran (SUSE Linux) 4.7.1
                                  (cmake and autotools)

    SUSE 12.2 3.4.6-2.10-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.7.1
                                  GNU Fortran (SUSE Linux) 4.7.1 
                                  (cmake and autotools)

    Ubuntu 12.04 3.2.0-29-generic #46-Ubuntu SMP i686 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  GNU Fortran (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  (cmake and autotools)

    Ubuntu 12.04 3.2.0-29-generic #46-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  GNU Fortran (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  (cmake and autotools)
                                  (Use optimization level -O1)
    
    Cray Linux Environment (CLE)  PrgEnv-pgi/4.0.46
    hopper.nersc.gov              pgcc 12.5-0 64-bit target on x86-64 Linux -tp shanghai
                                  pgf90 12.5-0 64-bit target on x86-64 Linux -tp shanghai
                                  pgCC 12.5-0 64-bit target on x86-64 Linux -tp shanghai
    

Known Problems
==============
* The C++ and FORTRAN bindings are not currently working on FreeBSD with the
  native release 8.2 compilers (4.2.1), but are working with gcc 4.6 from the
  ports (and probably gcc releases after that).
  (QAK - 2012/10/19)

* The following h5dump test case fails in BG/P machines (and potentially other
  machines that use a command script to launch executables):

   h5dump --no-compact-subset -d "AHFINDERDIRECT::ah_centroid_t[0] it=0 tl=0"
     tno-subset.h5
  
  This is due to the embedded spaces in the dataset name being interpreted
  by the command script launcher as meta-characters, thus passing three
  arguments to h5dump's -d flag. The command passes if run by hand, just
  not via the test script.
  (AKC - 2012/05/03)

* On hopper, the build failed when RUNSERIAL and RUNPARALLEL are set
  to aprun -np X, because the H5lib_settings.c file was not generated
  properly. Not setting those environment variables works, because
  configure was able to automatically detect that it's a Cray system
  and used the proper launch commands when necessary. 
  (MSC - 2012/04/18)

* The data conversion test dt_arith.c fails in "long double" to integer
  conversion on Ubuntu 11.10 (3.0.0.13 kernal) with GCC 4.6.1 if the library
  is built with optimization -O3 or -O2.  The older GCC (4.5) or newer kernal
  (3.2.2 on Fedora) doesn't have the problem.  Users should lower the 
  optimization level (-O1 or -O0) by defining CFLAGS in the command line of 
  "configure" like:

      CFLAGS=-O1 ./configure

  This will overwrite the library's default optimization level.
  (SLU - 2012/02/07 - HDFFV-7829)

* The STDIO VFD does not work on some architectures, possibly due to 32/64
  bit or large file issues.  The basic STDIO VFD test is known to fail on
  64-bit SunOS 5.10 on SPARC when built with -m64 and 32-bit OS X/Darwin
  10.7.0.  The STDIO VFD test has been disabled while we investigate and
  a fix should appear in a future release.
  (DER - 2011/10/14 - HDFFV-8235)

* h5diff can report inconsistent results when comparing datasets of enum type
  that contain invalid values.  This is due to how enum types are handled in
  the library and will be addressed in a future release.
  (DER - 2011/10/14 - HDFFV-7527)

* The links test can fail under the stdio VFD due to some issues with external
  links.  This will be investigated and fixed in a future release.
  (DER - 2011/10/14 - HDFFV-7768)

* After the shared library support was fixed for some bugs, it was discovered
  that "make prefix=XXX install" no longer works for shared libraries. It
  still works correctly for static libraries. Therefore, if you want to
  install the HDF5 shared libraries in a location such as /usr/local/hdf5,
  you need to specify the location via the --prefix option during configure 
  time. E.g, ./configure --prefix=/usr/local/hdf5 ...
  (AKC - 2011/05/07 - HDFFV-7583)

* The parallel test, t_shapesame, in testpar/, may run for a long time and may
  be terminated by the alarm signal.  If that happens, one can increase the
  alarm seconds (default is 1200 seconds = 20 minutes) by setting the
  environment variable, $HDF5_ALARM_SECONDS, to a larger value such as 3600
  (60 minutes).  Note that the t_shapesame test may fail in some systems 
  (see the "While working on the 1.8.6 release..." problem below).  If 
  it does, it will waste more time if $HDF5_ALARM_SECONDS is set
  to a larger value.
  (AKC - 2011/05/07)

* The C++ and FORTRAN bindings are not currently working on FreeBSD.
  (QAK - 2011/04/26)

* Shared Fortran libraries are not quite working on AIX. While they are
  generated when --enable-shared is specified, the fortran and hl/fortran
  tests fail. We are looking into the issue. HL and C++ shared libraries
  should now be working as intended, however.
  (MAM - 2011/04/20)

* The --with-mpe configure option does not work with Mpich2.
  (AKC - 2011/03/10)

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or file systems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/
  (NAF - 2011/01/19)

* The library's test dt_arith.c showed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to
  skip this test until we can solve the problem.
  (SLU - 2010/05/05 - HDFFV-1264)

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added in.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug in 1.8 library.  Because there's only one user 
  complaining about it, we (Elena, Quincey, and I) decided to leave it as 
  it is (see bug report #1279).  Quincey will make a plan for 1.10.
  (SLU - 2010/02/02)

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.
  (MAM - 2009/11/04)
  
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO.
  (CMC - 2009/04/28)

* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  (SLU - 2005/06/30)


%%%%1.8.10%%%%   


HDF5 version 1.8.10 released on 2012-10-26
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.9 and 
HDF5 1.8.10, and contains information on the platforms tested and 
known problems in HDF5-1.8.10. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.10 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.10 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.10 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.10 (current 
release) versus Release 1.8.9":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.9
- Supported Platforms
- Supported Configuration Features Summary
- More Tested Platforms
- Known Problems


New Features
============

    Configuration
    -------------
    - None
    
    Library
    -------
    - Updated to latest autotools and changed all hard *.sh scripts to
      configure managed *.sh.in files. Removed overloading of autotools
      TESTS variable by examples and tests. Renamed configure.in to
      configure.ac. (ADB - 2012/08/23 - HDFFV-8129)
    - The data sieve buffer size was set for all the datasets in the file.  It
      could waste memory if any dataset size is smaller than the sieve buffer
      size.  Now the library picks the smaller one between the dataset size
      and the sieve buffer size from the file access property. See Issue 7934.
      (SLU - 2012/4/11)
 
    Parallel Library
    ----------------
    - Added the H5Pget_mpio_no_collective_cause() function that retrieves 
      reasons why the collective I/O was broken during read/write IO access. 
      (JKM - 2012/08/30 HDFFV-8143)

    - Added H5Pget_mpio_actual_io_mode_f (MSB - 2012/09/27)
 
    Tools
    -----
    - h5import: Changed to allow the use of h5dump output as input files to 
      h5import. h5dump must include the "-p" option to print the properties; 
      configuration file is captured output of h5dump. The restrictions are 
      that only one dataset with a simple datatype (integer, floating-point, 
      or string) can be processed. Integers and floating-point imports from 
      h5dump must use the "binary" option for the data file. The string version 
      uses the h5dump "-y --width=1" options to disable the indexing printouts, 
      print single columns, and obviously NOT use the "binary" option. 
      (ADB - 2012/07/19 HDFFV-721)

    High-Level APIs
    ---------------
    - None

    Fortran API
    -----------
    - Fixed a typo in return value of the nh5dread_f_c function (was 1 
      instead of 0 on success); fixed the return value to make it consistent
      with other Fortran functions; cleaned debug statements from the code.
      (EIP - 2012/06/23)

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - None

Bug Fixes since HDF5-1.8.9
==========================

    Configuration
    -------------
    - Fixed configure --enable-production to not use -O optimization for Lion
      and Mountain Lion systems when gcc (i686-apple-darwin11-llvm-gcc-4.2
      (GCC) 4.2.1) is used.  Somehow the -O optimization will cause some of
      the hard conversion code in test/dt_arith.c to fail. HDFFV-8017.
      (AKC - 2012/10/10)
    - Fixed AIX Fortran compiler flags to use appropriate settings for
      debugging, profiling, and optimization situations. HDFFV-8069. 
      (AKC 2012/09/27)

    Library
    -------
    - Fixed a memory leak exposed when inserting/removing a property
      from a property list several times. HDFFV-8022. (MSC 2012/05/18)
    - The file_image test will fail in the "initial file image and callbacks in
      the core VFD" sub-test if the source directory is read-only as the test
      fails to create its test files in the build directory. This has been
      fixed. HDFFV-8009 (AKC - 2012/07/06)
  

    Parallel Library
    ----------------
    - The MPI-POSIX VFD was updated to include the POSIX and Windows
      correctness features added that had already been added to the other VFDs.
      HDFFV-8058/7845.  (DER 2012/09/17)

    Performance
    -------------
    - Removed program perform/benchpar from the enable-build-all list.  The
      program will be retired or moved to another location.  HDFFV-8156
      (AKC 2012/10/01)
    - Retired program perform/mpi-perf. Its purpose has been incorporated
      into h5perf. (AKC 2012/09/21)

    Tools
    -----
    - h5repack: "h5repack -f NONE file1.h5 out.h5" command failed if
      source file contains chunked dataset and a chunk dim is bigger than 
      the dataset dim. Another issue is that the command changed max dims
      if chunk dim is smaller than the dataset dim. These issue occurred 
      when dataset size is smaller than 64k (compact size limit)  Fixed both.
      HDFFV-8012 (JKM 2012/09/24)
    - h5diff: Fixed the counter in verbose mode (-v, -r) so that it will no 
      longer add together the differences between datasets and the differences 
      between attributes of those datasets. This change makes the output of 
      verbose mode consistent for datasets, groups, and committed datatypes. 
      HDFFV-5919 (JKM 2012/09/10)
    - h5diff: Fixed the incorrect result when comparing attribute data 
      values and the data type has the same class but different sizes.
      HDFFV-7942  (JKM 2012/08/15)
    - h5dump: Replaced single element fwrite with block writes.
      HDFFV-1208 (ADB 2012/08/13)
    - h5diff: Fixed test failure for "make check" due to failure of 
      copying test files when performed in HDF5 source tree. Also applied
      to other tools.  HDFFV-8107 (JKM 2012/08/01)
    - ph5diff: Fixed intermittent hang issue on a certain operation in 
      parallel mode. It was detected by daily test for comparing 
      non-comparable objects, but it could have occurred in other 
      operations depending on machine condition.  HDFFV-8003 (JKM 2012/08/01)
    - h5diff: Fixed the function COPY_TESTFILES_TO_TESTDIR() of testh5diff.sh
      to better report when there is an error in the file copying.
      HDFFV-8105 (AKC 2012/07/22)
    - h5dump: Fixed the sort by name display to maintain correct parent/child
      relationships between ascending/descending order.
      HDFFV-8095 (ADB 2012/07/12)
    - h5dump: Fixed the display by creation order when using option -n 
      (print contents).
      HDFFV-5942 (ADB 2012/07/09)
    - h5dump: Changed to allow H5T_CSET_UTF8 to be displayed in h5dump output. 
      Used technique similar to what was done in h5ls (matches library 
      options).
      HDFFV-7999 (ADB 2012/05/23)
    - h5diff: Fixed the tool so that it will not check and display the status 
      of dangling links without setting the --follow-symlinks option. This 
      also improved performance when comparing lots of external links without 
      the --follow-symlinks option.  
      HDFFV-7998 (JKM 2012/04/26)

    F90 API
    -------
    
    - Fixed a typo in return value of the nh5dread_f_c function (was 1
      instead of 0 on success); fixed the return value to make it consistent
      with other Fortran functions; cleaned debug statements from the code.
      (EIP - 2012/06/23)

    - Fixed a problem writing/reading control characters to a dataset; writing
      a string containing alerts, backspace, carriage_return, form_feed,
      horizontal_tab, vertical_tab, or new_line is now tested and working.
      (MSB - 2012/09/01)

    - Corrected the integer type of H5S_UNLIMITED_F to HSIZE_T (MSB - 2012/09/01)

    - Corrected the number of continuation lines in the src files
      to be less than 32 lines for F95 compliance. (MSB - 2012/10/01)

    C++ API
    ------
    - None

    High-Level APIs:
    ------

    - Fixed problem with H5TBdelete_record destroying all data following the 
      deletion of a row. (MSB- 2012/7/26)

    - Fixed H5LTget_attribute_string not closing an object identifier when an 
      error occurs. (MSB- 2012/7/21)

    - Corrected the return type of H5TBAget_fill from herr_t to htri_t to 
      reflect that a return value of 1 indicates that a fill value is 
      present, 0 indicates a fill value is not present, and <0 indicates an 
      error.

    Fortran High-Level APIs:
    ------
    - None

Supported Platforms
===================
    AIX 5.3                       xlc 10.1.0.5
    (NASA G-ADA)                  xlC 10.1.0.5
                                  xlf90 12.1.0.6

    Linux 2.6.18-308.13.1.el5PAE  GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP i686 i686 i386         compilers for 32-bit applications;
    (jam)                             Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.6.3
                                  PGI C, Fortran, C++ Compilers for 32-bit
                                  applications;
                                      Version 11.9-0
                                  Intel(R) C, C++, Fortran Compiler for 32-bit
                                  applications;
                                      Version 12.1
                                  MPICH mpich2-1.4.1p1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.18-308.16.1.el5     GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP x86_64 GNU/Linux       compilers for 32-bit applications;
    (koala)                           Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.6.3
                                  PGI C, Fortran, C++ for 64-bit target on 
                                  x86-64;
                                      Version 11.9-0 
                                      Version 12.5-0
                                  Intel(R) C, C++, Fortran Compilers for 
                                  applications running on Intel(R) 64; 
                                      Version 12.1 (Build 20110811)
                                      Version 12.1 (Build 20120212)
                                  MPICH mpich2-1.4.1p1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.32-220.7.1.el6.ppc64 gcc (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3) 
    #1 SMP ppc64 GNU/Linux        g++ (GCC) 4.4.6 20110731 
    (ostrich)                     GNU Fortran (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3)

    Linux 2.6.32-220.23.1.1chaos  Intel C, C++, Fortran Compilers
    ch5.x86_64 GNU/Linux              Version 12.1.5.339
    (LLNL Aztec)

    IBM Blue Gene/P               XL C for Blue Gene/P, bgxlc V9.0
    (LLNL uDawn)                  XL C++ for Blue Gene/P, bgxlC V9.0
                                  XL Fortran for Blue Gene/P, bgxlf90 V11.1

    SunOS 5.10 32- and 64-bit     Sun C 5.9 Sun OS_sparc Patch 124867-16
    (linew)                       Sun Fortran 95 8.3 Sun OS_sparc Patch 127000-13
                                  Sun C++ 5.9 Sun OS_sparc Patch 124863-26
                                  Sun C 5.11 SunOS_sparc
                                  Sun Fortran 95 8.5 SunOS_sparc
                                  Sun C++ 5.11 SunOS_sparc

    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1 (project files)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1 (project files)

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Cygwin(CYGWIN_NT-6.1 1.7.15(0.260/5/3) gcc(4.5.3) compiler and gfortran)
                                  (cmake and autotools)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Cygwin(CYGWIN_NT-6.1 1.7.15(0.260/5/3) gcc(4.5.3) compiler and gfortran)
                                  (cmake and autotools)

    Mac OS X Snow Leopard 10.6.8  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Darwin Kernel Version 10.8.0  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    (fred)                        gfortran GNU Fortran (GCC) 4.6.2
                                  Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1.0.038 Build 20110811

    Mac OS X Snow Leopard 10.6.8  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Darwin Kernel Version 10.8.0  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 3.2.6
    Intel 32-bit                  gfortran GNU Fortran (GCC) 4.6.1
    (tejeda)                      Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1.0.038 Build 20110811

    Mac OS X Lion 10.7.3          gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 4.2.1
    32- and 64-bit                g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 4.2.1
    (duck)                        gfortran GNU Fortran (GCC) 4.6.2

    Mac OS X Mountain Lion 10.8.1 cc Apple clang version 4.0 from Xcode 4.5.1
    (owl)                         c++ Apple clang version 4.0 from Xcode 4.5.1
				  gcc i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 from Xcode 4.5.1
				  g++ i686-apple-darwin11-llvm-g++-4.2 (GCC) 4.2.1 from Xcode 4.5.1
    			          gfortran GNU Fortran (GCC) 4.6.2


Tested Configuration Features Summary
=====================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                              C         F90/   F90      C++  zlib  SZIP
                                      parallel  F2003  parallel
Solaris2.10 32-bit                      n        y/y    n        y    y     y
Solaris2.10 64-bit                      n        y/n    n        y    y     y
Windows 7                               y        y/n    n        y    y     y
Windows 7     x64                       y        y/n    n        y    y     y
Mac OS X Snow Leopard 10.6.8 32-bit     n        y/y    n        y    y     n 
Mac OS X Snow Leopard 10.6.8 64-bit     n        y/y    n        y    y     y
Mac OS X Lion 10.7.3 32-bit             n        y/y    n        y    y     n
Mac OS X Lion 10.7.3 64-bit             n        y/y    n        y    y     y
Mac OS X Mountain Lion 10.8.1 64-bit    n        y/n    n        y    y     n
AIX 5.3 32- and 64-bit                  y        y/n    y        y    y     y
CentOS 5.5 Linux 2.6.18-308 i686 GNU    y        y/y    y        y    y     y
CentOS 5.5 Linux 2.6.18-308 i686 Intel  n        y/y    n        y    y     y
CentOS 5.5 Linux 2.6.18-308 i686 PGI    n        y/y    n        y    y     y
CentOS 5.5 Linux 2.6.18 x86_64 GNU      y        y/y    y        y    y     y
CentOS 5.5 Linux 2.6.18 x86_64 Intel    n        y/y    n        y    y     y
CentOS 5.5 Linux 2.6.18 x86_64 PGI      n        y/y    n        y    y     y
Linux 2.6.32-220.7.1.el6.ppc64          n        y/n    n        y    y     y


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                         y       y         y         y        
Solaris2.10 64-bit                         n       n         n         n        
Windows 7                                  y       y         y         y
Windows 7 x64                              y       y         y         y
Mac OS X Snow Leopard 10.6.8 32-bit        y       n         y         n        
Mac OS X Snow Leopard 10.6.8 64-bit        y       n         y         n        
Mac OS X Lion 10.7.3 32-bit                y       n         y         y        
Mac OS X Lion 10.7.3 64-bit                y       n         y         y        
Mac OS X Mountain Lion 10.8.1 64-bit       y       n         y         y        
AIX 5.3 32- and 64-bit                     n       n         n         y        
CentOS 5.5 Linux 2.6.18-308 i686 GNU       y       y         y         y        
CentOS 5.5 Linux 2.6.18-308 i686 Intel     y       y         y         n        
CentOS 5.5 Linux 2.6.18-308 i686 PGI       y       y         y         n        
CentOS 5.5 Linux 2.6.18 x86_64 GNU         y       y         y         y        
CentOS 5.5 Linux 2.6.18 x86_64 Intel       y       y         y         n        
CentOS 5.5 Linux 2.6.18 x86_64 PGI         y       y         y         n        
Linux 2.6.32-220.7.1.el6.ppc64             y       y         y         n 

Compiler versions for each platform are listed in the preceding
"Supported Platforms" table.


More Tested Platforms
=====================
The following platforms are not supported but have been tested for this release.

    FreeBSD 8.2-STABLE i386       gcc 4.2.1 [FreeBSD] 20070719
    (loyalty)                     gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    FreeBSD 8.2-STABLE amd64      gcc 4.2.1 [FreeBSD] 20070719
    (freedom)                     gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    Debian6.0.3 2.6.32-5-686 #1 SMP i686 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5
                                  (cmake and autotools)

    Debian6.0.3 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5
                                  (cmake and autotools)

    Fedora17 3.5.2-1.fc17.i6866 #1 SMP i686 i686 i386 GNU/Linux
                                  gcc (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  GNU Fortran (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  (cmake and autotools)

    Fedora17 3.5.2-1.fc17.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  GNU Fortran (GCC) 4.7.0 20120507 (Red Hat 4.7.0-5)
                                  (cmake and autotools)

    SUSE 12.2 3.4.6-2.10-desktop #1 SMP PREEMPT i686 i686 i386 GNU/Linux
                                  gcc (SUSE Linux) 4.7.1
                                  GNU Fortran (SUSE Linux) 4.7.1
                                  (cmake and autotools)

    SUSE 12.2 3.4.6-2.10-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.7.1
                                  GNU Fortran (SUSE Linux) 4.7.1 
                                  (cmake and autotools)

    Ubuntu 12.04 3.2.0-29-generic #46-Ubuntu SMP i686 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  GNU Fortran (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  (cmake and autotools)

    Ubuntu 12.04 3.2.0-29-generic #46-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  GNU Fortran (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
                                  (cmake and autotools)
                                  (Use optimization level -O1)
    
    Cray Linux Environment (CLE)  PrgEnv-pgi/4.0.46
    hopper.nersc.gov              pgcc 12.5-0 64-bit target on x86-64 Linux -tp shanghai
                                  pgf90 12.5-0 64-bit target on x86-64 Linux -tp shanghai
                                  pgCC 12.5-0 64-bit target on x86-64 Linux -tp shanghai
    

Known Problems
==============
* The following h5stat test case fails in BG/P machines (and potentially other
  machines that display extra output if an MPI task returns with a non-zero
  code.)
    Testing h5stat notexist.h5
  
  The test actually runs and passes as expected. It is the extra output from
  the MPI process that causes the test script to fail. This will be fixed
  in the next release.  (AKC - 2012/10/25 - HDFFV-8233)

* The C++ and FORTRAN bindings are not currently working on FreeBSD with the
  native release 8.2 compilers (4.2.1), but are working with gcc 4.6 from the
  ports (and probably gcc releases after that).
  (QAK - 2012/10/19)

* The following h5dump test case fails in BG/P machines (and potentially other
  machines that use a command script to launch executables):

   h5dump --no-compact-subset -d "AHFINDERDIRECT::ah_centroid_t[0] it=0 tl=0"
     tno-subset.h5
  
  This is due to the embedded spaces in the dataset name being interpreted
  by the command script launcher as meta-characters, thus passing three
  arguments to h5dump's -d flag. The command passes if run by hand, just
  not via the test script.
  (AKC - 2012/05/03)

* On hopper, the build failed when RUNSERIAL and RUNPARALLEL are set
  to aprun -np X, because the H5lib_settings.c file was not generated
  properly. Not setting those environment variables works, because
  configure was able to automatically detect that it's a Cray system
  and used the proper launch commands when necessary. 
  (MSC - 2012/04/18)

* The data conversion test dt_arith.c fails in "long double" to integer
  conversion on Ubuntu 11.10 (3.0.0.13 kernal) with GCC 4.6.1 if the library
  is built with optimization -O3 or -O2.  The older GCC (4.5) or newer kernal
  (3.2.2 on Fedora) doesn't have the problem.  Users should lower the 
  optimization level (-O1 or -O0) by defining CFLAGS in the command line of 
  "configure" like:

      CFLAGS=-O1 ./configure

  This will overwrite the library's default optimization level.
  (SLU - 2012/02/07 - HDFFV-7829)

* The STDIO VFD does not work on some architectures, possibly due to 32/64
  bit or large file issues.  The basic STDIO VFD test is known to fail on
  64-bit SunOS 5.10 on SPARC when built with -m64 and 32-bit OS X/Darwin
  10.7.0.  The STDIO VFD test has been disabled while we investigate and
  a fix should appear in a future release.
  (DER - 2011/10/14 - HDFFV-8235)

* h5diff can report inconsistent results when comparing datasets of enum type
  that contain invalid values.  This is due to how enum types are handled in
  the library and will be addressed in a future release.
  (DER - 2011/10/14 - HDFFV-7527)

* The links test can fail under the stdio VFD due to some issues with external
  links.  This will be investigated and fixed in a future release.
  (DER - 2011/10/14 - HDFFV-7768)

* After the shared library support was fixed for some bugs, it was discovered
  that "make prefix=XXX install" no longer works for shared libraries. It
  still works correctly for static libraries. Therefore, if you want to
  install the HDF5 shared libraries in a location such as /usr/local/hdf5,
  you need to specify the location via the --prefix option during configure 
  time. E.g, ./configure --prefix=/usr/local/hdf5 ...
  (AKC - 2011/05/07 - HDFFV-7583)

* The parallel test, t_shapesame, in testpar/, may run for a long time and may
  be terminated by the alarm signal.  If that happens, one can increase the
  alarm seconds (default is 1200 seconds = 20 minutes) by setting the
  environment variable, $HDF5_ALARM_SECONDS, to a larger value such as 3600
  (60 minutes).  Note that the t_shapesame test may fail in some systems 
  (see the "While working on the 1.8.6 release..." problem below).  If 
  it does, it will waste more time if $HDF5_ALARM_SECONDS is set
  to a larger value.
  (AKC - 2011/05/07)

* The C++ and FORTRAN bindings are not currently working on FreeBSD.
  (QAK - 2011/04/26)

* Shared Fortran libraries are not quite working on AIX. While they are
  generated when --enable-shared is specified, the fortran and hl/fortran
  tests fail. We are looking into the issue. HL and C++ shared libraries
  should now be working as intended, however.
  (MAM - 2011/04/20)

* The --with-mpe configure option does not work with Mpich2.
  (AKC - 2011/03/10)

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or file systems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/
  (NAF - 2011/01/19)

* The library's test dt_arith.c showed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to
  skip this test until we can solve the problem.
  (SLU - 2010/05/05 - HDFFV-1264)

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added in.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug in 1.8 library.  Because there's only one user 
  complaining about it, we (Elena, Quincey, and I) decided to leave it as 
  it is (see bug report #1279).  Quincey will make a plan for 1.10.
  (SLU - 2010/02/02)

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.
  (MAM - 2009/11/04)
  
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO.
  (CMC - 2009/04/28)

* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  (SLU - 2005/06/30)


%%%%1.8.9%%%%   


HDF5 version 1.8.9 released on 2012-05-09
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.8 and 
HDF5 1.8.9. It also contains information on the platforms tested and 
known problems in HDF5-1.8.9. 

For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.9 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.9 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.9 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.9 (current 
release) versus Release 1.8.8":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.8
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - None
    
    Library
    -------
    - Added new feature to merge committed datatypes when copying objects,
      using new H5O_COPY_MERGE_COMMITTED_DTYPE_FLAG, modified by new API
      routines: H5Padd_merge_committed_dtype_path(),
      H5Pfree_merge_committed_dtype_paths(), H5Pset_mcdt_search_cb() and
      H5Pget_mcdt_search_cb().  (QAK - 2012/03/30)
    - Added new feature which allows working with files in memory in the 
      same ways files are worked with on disk. New API routines include 
      H5Pset_file_image, H5Pget_file_image, H5Pset_file_image_callbacks, 
      H5Pget_file_image_callbacks, H5Fget_file_image, and 
      H5LTopen_file_image. (QAK - 2012/04/17)
 
    Parallel Library
    ----------------
    - Corrected memory allocation error in MPI datatype construction code.
      (QAK - 2012/04/23)
    - Add two new routines to set/get the atomicity parameter in the
      MPI library to perform atomic operations. Some file systems (for
      example PVFS2) do not support atomic updates, so those routines
      would not be supported. (MSC - 2012/03/27 - HDFFV-7961)
 
    Tools
    -----
    - h5repack: Added ability to set the metadata block size of the output
      file, with the '-M'/'--metadata_block_size' command line parameter.
      (QAK - 2012/03/30)
    - h5stat: Added ability to display a summary of the file space usage for a
      file, with the '-S'/'--summary' command line parameter.  (QAK - 2012/03/28)
    - h5dump: Added capability for "-a" option to show attributes containing "/" 
      by using an escape character. For example, for a dataset "/dset" 
      containing attribute "speed(m/h)", use "h5dump -a "/dset/speed(\/h)" 
      to show the content of the attribute. (PC - 2012/03/12 - HDFFV-7523)
    - h5dump: Added ability to apply command options across multiple files using a
      wildcard in the filename. Unix example; "h5dump -H -d Dataset1 tarr*.h5".
      Cross platform example; "h5dump -H -d Dataset1 tarray1.h5 tarray2.h5 tarray3.h5".
      (ADB - 2012/03/12 - HDFFV-7876).
    - h5dump: Added new option --no-compact-subset. This option will not
      interpret the '[' character as starting the compact form of 
      subsetting. This is useful when the "h5dump error: unable to 
      open dataset "datset_name"" message is output because a dataset
      name contains a '[' character. (ADB - 2012/03/05 - HDFFV-7689).
    - h5repack: Improved performance for big chunked datasets (size > 128MB)
      when used with the layout (-l) or compression (-f) options. 
      Before this change, repacking datasets with chunks with a large first 
      dimension would take extremely long. For example, repacking a dataset 
      with chunk dimensions of 1024x5x1 might take many hours to process 
      while changing a dataset with chunk dimensions set to 1x5x1024 
      might take under an hour. After this change, processing the dataset 
      with chunk dimensions of 1024x5x1 takes about 15 minutes, and processing 
      a dataset with chunk dimensions of 1x5x1024 takes about 14 minutes.
      (JKM - 2012/03/01 - HDFFV-7862) 

    High-Level APIs
    ---------------
    - New API: H5LTpath_valid (Fortran: h5ltpath_valid_f) checks
      if a path is correct, determines if a link resolves to a valid
      object, and checks that the link does not dangle. (MSB - 2012/03/15)

    Fortran API
    -----------

    - Added for the C API the Fortran wrapper:
       h5ocopy_f (MSB - 2012/03/22)

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - None

Bug Fixes since HDF5-1.8.8
==========================

    Configuration
    -------------
    - Fixed Makefile issue in which "-Wl," was not properly specified
      prior to -rpath when building parallel Fortran libraries with
      an Intel compiler. (MAM - 2012/03/26) 
    - Makefiles generated by other packages using h5cc as the compiler
      no longer error when 'make' is invoked more than once in order
      to 'rebuild' after changes to source. (MAM - 2012/03/26)
    - Added code to display the version information of XL Fortran and C++
      in the summary of configure. (AKC - 2012/02/28 - HDFFV-7793)
    - Updated all CMakeLists.txt files to indicate the minimum CMake version is
      the current standard of 2.8.6 (ADB - 2011/12/05 - HDFFV-7854)

    Library
    -------
    - Windows and STDIO correctness changes have been propagated from the SEC2
      and old Windows drivers to the STDIO VFD.  (DER - 2012/03/30 - HDFFV-7917)
    - Fixed an error that would occur when copying an object with attribute
      creation order tracked and indexed. (NAF - 2012/03/28 - HDFFV-7762)
    - Fixed a bug in H5Ocopy(): When copying an opened object, call the
      object's flush class action to ensure that cached data is flushed so
      that H5Ocopy will get the correct data.  (VC - 2012/03/27 - HDFFV-7853)
    - The istore test will now skip the sparse 50x50x50 test when the VFD does
      not support sparse files on that platform.  The most important platforms
      on which this will be skipped are Windows (NTFS sparse files are not
      supported) and Mac OS-X (HFS sparse files are not supported).  This
      fixes CTest timeout issues on Windows.  (DER - 2012/03/27 - HDFFV-7769)
    - Windows and POSIX correctness changes have been propagated from the SEC2
      VFD to the Core VFD.  This mainly affects file operations on the
      driver's backing store and fixes a problem on Windows where large files
      could not be read. (DER - 2012/03/27 - HDFFV-7916 - HDFFV-7603)
    - When an application tries to write or read many small data chunks and
      runs out of memory, the library had a segmentation fault.  The fix is to
      return the error stack with proper information.
      (SLU - 2012/03/23 - HDFFV-7785)
    - H5Pset_data_transform had a segmentation fault in some cases like x*-100.  
      It works correctly now and handles other cases like 100-x or 2/x.
      (SLU - 2012/03/15 - HDFFV-7922)
    - Fixed rare corruption bugs that could occur when using the new object
      header format. (NAF - 2012/03/15 - HDFFV-7879)
    - Fixed an error that occurred when creating a contiguous dataset with a 
      zero-sized dataspace and space allocation time set to 'early'. 
      (QAK - 2012/03/12)
    - Changed Windows thread creation to use _beginthread() instead of
      CreateThread().  Threads created by the latter can be killed in
      low-memory situations. (DER - 2012/02/10 - HDFFV-7780)
    - Creating a dataset in a read-only file caused a segmentation fault when 
      the file is closed.  It's fixed. The attempt to create a dataset will 
      fail with an error indicating the file is read-only.
      (SLU - 2012/01/25 - HDFFV-7756) 
    - Fixed a segmentation fault that could occur when shrinking a dataset 
      with chunks larger than 1 MB. (NAF - 2011/11/30 - HDFFV-7833)
    - Fixed a bug that could cause H5Oget_info to return the wrong address
      after copying a committed (named) datatype. (NAF - 2011/11/14)
    - The library allowed the conversion of strings between ASCII and UTF8
      We have corrected it to report an error under this situation.
      (SLU - 2011/11/8 - HDFFV-7582)
    - Fixed a segmentation fault when the library tried to shrink the size 
      of a compound datatype through H5Tset_size immediately after the 
      datatype was created. (SLU - 2011/11/4 - HDFFV-7618)

    Parallel Library
    ----------------
    - None

    Tools
    -----
    - h5unjam: Fixed a segmentation fault that occurred when h5unjam was used 
      with the -V (show version) option. (JKM - 2012/04/19 - HDFFV-8001)
    - h5repack: Fixed a failure that occurred when repacking the chunk size 
      of a specified chunked dataset with unlimited max dims. 
      (JKM - 2012/04/11 - HDFFV-7993) 
    - h5diff: Fixed a failure when comparing groups. Before the fix, if an 
      object in a group was compared with an object in another group where 
      both had the same name but the object type was different, then h5diff
      would fail. After the fix, h5diff detects such cases as non-comparable
      and displays appropriate error messages. 
      (JKM - 2012/03/28 - HDFFV-7644)
    - h5diff: If unique objects exist only in one file and if h5diff is set to 
      exclude the unique objects with the --exclude-path option, then h5diff 
      might miss excluding some objects. This was fixed to correctly exclude 
      objects. (JKM - 2012/03/20 - HDFFV-7837)
    - h5diff: When two symbolic dangling links are compared with the 
      --follow-symlinks option, the result should be the same. This worked when 
      comparing two files, but didn't work when comparing two objects.
      h5diff now works when comparing two objects.
      (JKM - 2012/03/09 - HDFFV-7835)
    - h5dump: Added the tools library error stack to properly catch error
      information generated within the library. (ADB - 2012/03/12 - HDFFV-7958)
    - h5dump: Changed the process where an open link used to fail. Now dangling 
      links no longer throw error messages. (ADB - 2012/03/12 - HDFFV-7839)
    - h5dump: Refactored code to remove duplicated functions. Split XML 
      functions from DDL functions. Corrected indentation and formatting
      errors. Also fixed subsetting counting overflow (HDFFV-5874). Verified
      all tools call tools_init() in main. The USER_BLOCK data now correctly
      displays within the SUPER_BLOCK info. NOTE: WHITESPACE IN THE OUTPUT
      HAS CHANGED. (ADB - 2012/02/17 - HDFFV-7560)
    - h5diff: Fixed to prevent from displaying error stack message when 
      comparing two dangling symbolic links with the follow-symlinks option.
      (JKM - 2012/01/13 - HDFFV-7836)
    - h5repack: Fixed a memory leak that occurred with the handling of 
      variable length strings in attributes.
      (JKM - 2012/01/10 - HDFFV-7840)
    - h5ls: Fixed a segmentation fault that occurred when accessing region 
      reference data in an attribute. (JKM - 2012/01/06 - HDFFV-7838)

    F90 API
    -------
    - None

    C++ API
    ------
    - None

    High-Level APIs:
    ------
    - None

    Fortran High-Level APIs:
    ------
    - h5ltget_attribute_string_f: The h5ltget_attribute_string_f used to return 
      the C NULL character in the returned character buffer. The returned 
      charactor buffer now does not return the C NULL character; the buffer 
      is blank-padded if needed. (MSB - 2012/03/23)


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 5.3                       xlc 10.1.0.5
    (NASA G-ADA)                  xlC 10.1.0.5
                                  xlf90 12.1.0.6

    FreeBSD 8.2-STABLE i386       gcc 4.2.1 [FreeBSD] 20070719
    (loyalty)                     g++ 4.2.1 [FreeBSD] 20070719
                                  gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    FreeBSD 8.2-STABLE amd64      gcc 4.2.1 [FreeBSD] 20070719
    (freedom)                     g++ 4.2.1 [FreeBSD] 20070719
                                  gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    Linux 2.6.18-194.3.1.el5PAE   GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP i686 i686 i386         compilers for 32-bit applications;
    (jam)                             Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.5.2
                                  PGI C, Fortran, C++ Compilers for 32-bit
                                  applications;
                                      Version 11.8-0
                                      Version 11.9-0
                                  Intel(R) C, C++, Fortran Compiler for 32-bit
                                  applications;
                                      Version 12.0
                                      Version 12.1
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.18-308.1.1.el5      GNU C (gcc), Fortran (gfortran), C++ (g++)
    #1 SMP x86_64 GNU/Linux       compilers for 32-bit applications;
    (koala)                           Version 4.1.2 20080704 (Red Hat 4.1.2-52)
                                      Version 4.5.2
                                  PGI C, Fortran, C++ for 64-bit target on 
                                  x86-64;
                                      Version 11.9-0 (64-bit)
                                      Version 11.8-0 (32-bit)
                                  Intel(R) C, C++, Fortran Compilers for 
                                  applications running on Intel(R) 64; 
                                      Version 12.0
                                      Version 12.1
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.32-220.7.1.el6.ppc64 gcc (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3) 
    #1 SMP ppc64 GNU/Linux        g++ (GCC) 4.4.6 20110731 
    (ostrich)                     GNU Fortran (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3)

    Linux 2.6.18-108chaos         Intel C, C++, Fortran Compilers Version 11.1
    #1 SMP x86_64 GNU/Linux
    (LLNL Aztec)

    IBM Blue Gene/P               XL C for Blue Gene/P, bgxlc V9.0
    (LLNL uDawn)                  XL C++ for Blue Gene/P, bgxlC V9.0
                                  XL Fortran for Blue Gene/P, bgxlf0 V11.1

    SunOS 5.10 32- and 64-bit     Sun C 5.9 Sun OS_sparc Patch 124867-16
    (linew)                       Sun Fortran 95 8.3 Sun OS_sparc Patch 127000-13
                                  Sun C++ 5.9 Sun OS_sparc Patch 124863-26
                                  Sun C 5.11 SunOS_sparc
                                  Sun Fortran 95 8.5 SunOS_sparc
                                  Sun C++ 5.11 SunOS_sparc

    SGI Altix UV                  Intel(R) C, Fortran Compilers
    SGI ProPack 7 Linux               Version 11.1 20100806
    2.6.32.24-0.2.1.2230.2.PTF-   SGI MPT 2.02
    default #1 SMP                
    (NCSA ember)

    Dell NVIDIA Cluster           Intel(R) C, Fortran Compilers
    Red Hat Enterprise Linux 6        Version 12.0.4 20110427
    2.6.32-131.4.1.el6.x86_64     mvapich2 1.7rc1-intel-12.0.4
    (NCSA forge)

    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Cygwin(1.7.9 native gcc(4.5.3) compiler and gfortran)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 w/ Intel Fortran 12 (cmake)
                                  Cygwin(1.7.9 native gcc(4.5.3) compiler and gfortran)

    Mac OS X Snow Leopard 10.6.8  i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (gcc)
    Darwin Kernel Version 10.8.0  i686-apple-darwin10-g++-4.2.1 (GCC) 4.2.1 (g++)
    Intel 64-bit                      (Apple Inc. build 5666) (dot 3)
    (fred)                        GNU Fortan (GCC) 4.6.1 (gfortran)
                                  Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1.0.038 Build 20110811

    Mac OS X Snow Leopard 10.6.8  i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (gcc)
    Darwin Kernel Version 10.8.0  i686-apple-darwin10-g++-4.2.1 (GCC) 4.2.1 (g++)
    Intel 32-bit                      (Apple Inc. build 5666) (dot 3)
    (tejeda)                      GNU Fortran (GCC) 4.6.1 (gfortran)
                                  Intel C (icc), Fortran (ifort), C++ (icpc)
                                      12.1.0.038 Build 20110811

    Mac OS X Lion 10.7.3          GCC 4.2.1 gcc
    32- and 64-bit                GNU Fortran (GCC) 4.6.1 gfortran
    (duck)                        GCC 4.2.1. g++

    Debian6.0.3 2.6.32-5-686 #1 SMP i686 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5

    Debian6.0.3 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5

    Fedora16 3.2.9-2.fc16.i6866 #1 SMP i686 i686 i386 GNU/Linux
                                  gcc (GCC) 4.6.2 20111027 (Red Hat 4.6.2-1)
                                  GNU Fortran (GCC) 4.6.2 20111027 (Red Hat 4.6.2-1)

    Fedora16 3.2.9-2.fc16.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.6.2 20111027 (Red Hat 4.6.2-1)
                                  GNU Fortran (GCC) 4.6.2 20111027 (Red Hat 4.6.2-1)

    SUSE 12.1 3.1.9-1.4-desktop #1 SMP PREEMPT i686 i686 i386 GNU/Linux
                                  gcc (SUSE Linux) 4.6.2
                                  GNU Fortran (SUSE Linux) 4.6.2

    SUSE 12.1 3.1.9-1.4-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.6.2
                                  GNU Fortran (SUSE Linux) 4.6.2 

    Ubuntu 11.10 3.0.0-16-generic #29-Ubuntu SMP i686 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
                                  GNU Fortran (Ubuntu/Linaro 4.6.4-9ubuntu3) 4.6.1

    Ubuntu 11.10 3.0.0-16-generic #29-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
                                  GNU Fortran (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1

    Cray Linux Environment (CLE)  PrgEnv-pgi 2.2.74
    hopper.nersc.gov              pgcc 11.9-0 64-bit target on x86-64 Linux -tp k8e
                                  pgf90 11.9-0 64-bit target on x86-64 Linux -tp k8e
                                  pgCC 11.9-0 64-bit target on x86-64 Linux -tp k8e
    

Tested Configuration Features Summary
=====================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                                 C        F90    F90      C++   zlib  SZIP
                                         parallel        parallel
Solaris2.10 32-bit                         n        y      n        y     y     y
Solaris2.10 64-bit                         n        y      n        y     y     y
Windows XP                                 n        y(4)   n        y     y     y
Windows XP x64                             n        y(4)   n        y     y     y
Windows Vista                              n        y(4)   n        y     y     y
Windows Vista x64                          n        y(4)   n        y     y     y
Mac OS X Snow Leopard 10.6.8 32-bit        n        y      n        y     y     n 
Mac OS X Snow Leopard 10.6.8 64-bit        n        y      n        y     y     y
Mac OS X Lion 10.7.3 32-bit                n        y      n        y     y     n
Mac OS X Lion 10.7.3 64-bit                n        y      n        y     y     y
AIX 5.3 32- and 64-bit                     y        y      y        y     y     y
FreeBSD 8.2-STABLE 32&64 bit               n        x      n        x     y     y
CentOS 5.5 Linux 2.6.18-194 i686 GNU (1)W  y        y(2)   y        y     y     y
CentOS 5.5 Linux 2.6.18-194 i686 Intel  W  n        y      n        y     y     y
CentOS 5.5 Linux 2.6.18-194 i686 PGI    W  n        y      n        y     y     y
CentOS 5.5 Linux 2.6.18 x86_64 GNU (1)  W  y        y(3)   y        y     y     y
CentOS 5.5 Linux 2.6.18 x86_64 Intel    W  n        y      n        y     y     y
CentOS 5.5 Linux 2.6.18 x86_64 PGI      W  n        y      n        y     y     y
Linux 2.6.32-220.7.1.el6.ppc64             n        y      n        y     y     y
SGI ProPack 7 Linux 2.6.32.24              y        y      y        y     y     y
Red Hat Enterprise Linux 6                 y        y      y        y     y     y
CLE hopper.nersc.gov                       y        y(3)   y        y     y     n


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                         y       y         y         y        
Solaris2.10 64-bit                         n       n         n         n        
Windows XP                                 y       y(4)      y         n        
Windows XP x64                             y       y(4)      y         n        
Windows Vista                              y       y(4)      y         y
Windows Vista x64                          y       y(4)      y         y
Mac OS X Snow Leopard 10.6.8 32-bit        y       n         y         n        
Mac OS X Snow Leopard 10.6.8 64-bit        y       n         y         n        
Mac OS X Lion 10.7.3 32-bit                y       n         y         y        
Mac OS X Lion 10.7.3 64-bit                y       n         y         y        
AIX 5.3 32- and 64-bit                     n       n         n         y        
FreeBSD 8.2-STABLE 32&64 bit               y       x         x         y        
CentOS 5.5 Linux 2.6.18-194 i686 GNU (1)W  y       y(2)      y         y        
CentOS 5.5 Linux 2.6.18-194 i686 Intel  W  y       y         y         n        
CentOS 5.5 Linux 2.6.18-194 i686 PGI    W  y       y         y         n        
CentOS 5.5 Linux 2.6.18 x86_64 GNU (1)  W  y       y         y         y        
CentOS 5.5 Linux 2.6.18 x86_64 Intel    W  y       y         y         n        
CentOS 5.5 Linux 2.6.18 x86_64 PGI      W  y       y         y         n        
Linux 2.6.32-220.7.1.el6.ppc64             y       y         y         n 
SGI ProPack 7 Linux 2.6.32.24              y       y         y         n 
Red Hat Enterprise Linux 6                 y       y         y         n
CLE hopper.nersc.gov                       n       n         n         n

           (1) Fortran compiled with gfortran.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2008 w/ Intel Fortran 10.1 (Cygwin shared libraries are not supported)
           (5) C and C++ shared libraries will not be built when Fortran is enabled.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* The h5repacktst test fails on AIX 32-bit because the test uses more
  memory than the default amount. The failure message typically looks like:

    "time: 0551-010 The process was stopped abnormally. Try again."

  This is an issue with the test only and does not represent a problem with
  the library. To allow the test to pass, request more memory when testing
  via appropriate command such as:

    $ env LDR_CNRTL=MAXDATA=0x20000000@DSA make check

  (AKC - 2012/05/09 - HDFFV-8016)

* The file_image test will fail in the "initial file image and callbacks in
  the core VFD" sub-test if the source directory is read-only as the test
  fails to create its test files in the build directory. This will be
  resolved in a future release.
  (AKC - 2012/05/05 - HDFFV-8009)
  
* The dt_arith test reports several errors involving "long double" on
  Mac OS X 10.7 Lion when any level of optimization is enabled. The test does
  not fail in debug mode. This will be addressed in a future release.
  (SLU - 2012/05/08)

* The following h5dump test case fails in BG/P machines (and potentially other
  machines that use a command script to launch executables):

   h5dump --no-compact-subset -d "AHFINDERDIRECT::ah_centroid_t[0] it=0 tl=0"
     tno-subset.h5
  
  This is due to the embedded spaces in the dataset name being interpreted
  by the command script launcher as meta-characters, thus passing three
  arguments to h5dump's -d flag. The command passes if run by hand, just
  not via the test script.
  (AKC - 2012/05/03)

* The ph5diff (parallel h5diff) tool can intermittently hang in parallel mode
  when comparing two HDF5 files that contain objects with the same names but
  with different object types.
  (JKM - 2012/04/27)

* On hopper, the build failed when RUNSERIAL and RUNPARALLEL are set
  to aprun -np X, because the H5lib_settings.c file was not generated
  properly. Not setting those environment variables works, because
  configure was able to automatically detect that it's a Cray system
  and used the proper launch commands when necessary. 
  (MSC - 2012/04/18)

* The data conversion test dt_arith.c fails in "long double" to integer
  conversion on Ubuntu 11.10 (3.0.0.13 kernal) with GCC 4.6.1 if the library
  is built with optimization -O3 or -O2.  The older GCC (4.5) or newer kernal
  (3.2.2 on Fedora) doesn't have the problem.  Users should lower the 
  optimization level (-O1 or -O0) by defining CFLAGS in the command line of 
  "configure" like:

      CFLAGS=-O1 ./configure

  This will overwrite the library's default optimization level.
  (SLU - 2012/02/07 - HDFFV-7829)

* The STDIO VFD does not work on some architectures, possibly due to 32/64
  bit or large file issues.  The basic STDIO VFD test is known to fail on
  64-bit SunOS 5.10 on SPARC when built with -m64 and 32-bit OS X/Darwin
  10.7.0.  The STDIO VFD test has been disabled while we investigate and
  a fix should appear in a future release.
  (DER - 2011/10/14)

* h5diff can report inconsistent results when comparing datasets of enum type
  that contain invalid values.  This is due to how enum types are handled in
  the library and will be addressed in a future release.
  (DER - 2011/10/14 - HDFFV-7527)

* The links test can fail under the stdio VFD due to some issues with external
  links.  This will be investigated and fixed in a future release.
  (DER - 2011/10/14 - HDFFV-7768)

* After the shared library support was fixed for some bugs, it was discovered
  that "make prefix=XXX install" no longer works for shared libraries. It
  still works correctly for static libraries. Therefore, if you want to
  install the HDF5 shared libraries in a location such as /usr/local/hdf5,
  you need to specify the location via the --prefix option during configure 
  time. E.g, ./configure --prefix=/usr/local/hdf5 ...
  (AKC - 2011/05/07 - HDFFV-7583)

* The parallel test, t_shapesame, in testpar/, may run for a long time and may
  be terminated by the alarm signal.  If that happens, one can increase the
  alarm seconds (default is 1200 seconds = 20 minutes) by setting the
  environment variable, $HDF5_ALARM_SECONDS, to a larger value such as 3600
  (60 minutes).  Note that the t_shapesame test may fail in some systems 
  (see the "While working on the 1.8.6 release..." problem below).  If 
  it does, it will waste more time if $HDF5_ALARM_SECONDS is set
  to a larger value.
  (AKC - 2011/05/07)

* The C++ and FORTRAN bindings are not currently working on FreeBSD.
  (QAK - 2011/04/26)

* Shared Fortran libraries are not quite working on AIX. While they are
  generated when --enable-shared is specified, the fortran and hl/fortran
  tests fail. We are looking into the issue. HL and C++ shared libraries
  should now be working as intended, however.
  (MAM - 2011/04/20)

* The --with-mpe configure option does not work with Mpich2.
  (AKC - 2011/03/10)

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or file systems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/
  (NAF - 2011/01/19)

* The library's test dt_arith.c showed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to
  skip this test until we can solve the problem.
  (SLU - 2010/05/05 - HDFFV-1264)

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added in.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug in 1.8 library.  Because there's only one user 
  complaining about it, we (Elena, Quincey, and I) decided to leave it as 
  it is (see bug report #1279).  Quincey will make a plan for 1.10.
  (SLU - 2010/02/02)

* MinGW has a missing libstdc++.dll.a library file and will not successfully link
  C++ applications/tests. Do not use the enable-cxx configure option. Read all of
  the INSTALL_MINGW.txt file for all restrictions.
  (ADB - 2009/11/11)

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.
  (MAM - 2009/11/04)
  
* The PathScale MPI implementation, accessing a Panasas file system, would
  cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file does not
  exist. This is due to the MPI_File_open() call failing if the mode has
  the MPI_MODE_EXCL bit set.
  (AKC - 2009/08/11 - HDFFV-988)
 
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO.
  (CMC - 2009/04/28)

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  (AKC - 2008/11/10)
  
* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect to see this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  (AKC - 2008/05/28)

* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  (SLU - 2005/06/30)

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.
  (AKC - 2004/12/08)


%%%%1.8.8%%%%   


HDF5 version 1.8.8 released on 2011-11-15
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.7 and 
HDF5 1.8.8, and contains information on the platforms tested and 
known problems in HDF5-1.8.8. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.8 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.8 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.8 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.8 (current 
release) versus Release 1.8.7":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.7
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - Added the --enable-fortran2003 flag to enable Fortran2003 support 
      in the HDF5 Fortran library. The flag should be used along with the
      --enable-fortran flag and takes affect only when the Fortran compiler 
      is Fortran2003 compliant. (EIP - 2011/11/14)
    - Added checks for clock_gettime and mach/mach_time.h to both configure and
      CMake.  This will support the move from gettimeofday to clock_gettime's
      monotonic timer in the profiling code in a future release.
      (DER - 2011/10/12)
    
    Library
    -------
    - The Windows VFD code has been removed with the exception of the functions
      which set it (H5Pset_fapl_windows, for example).  Setting the Windows
      VFD now really sets the SEC2 VFD.  The WINDOWS_MAX_BUF and
      WINDOWS_USE_STDIO configuration options and #defines have also been
      removed. NOTE: Since the Windows VFD was a clone of the SEC2 VFD, this
      change should be transparent to users.
      (DER - 2011/10/12 - HDFFV-7740, HDFFV-7744)
    - H5Tcreate now supports the string type (fixed-length and variable-
      length). (SLU - 2011/05/20)
 
    Parallel Library
    ----------------
    - Added new H5Pget_mpio_actual_chunk_opt_mode and
      H5Pget_mpio_actual_io_mode API routines for querying whether/how
      a collective I/O operation completed.  (QAK - 2011/10/12)
 
    Tools
    -----
    - None

    High-Level APIs
    ---------------
    - Added the following Fortran wrappers for the Dimension Scale APIs:
        h5dsset_scale_f
        h5dsattach_scale_f
        h5dsdetach_scale_f
        h5dsis_attached_f
        h5dsis_scale_f
        h5dsset_label_f
        h5dsget_label_f
        h5dsget_scale_name_f
        h5dsget_num_scales_f
      (EIP for SB - 2011/10/13 - HDFFV-3797)

    Fortran API
    -----------
    - The HDF5 Fortran library was enhanced to support the Fortran 2003 standard.
      The following features are available when the HDF5 library is configured
      using the --enable-fortran and --enable-fortran2003 configure flags AND
      if the Fortran compiler is Fortran 2003 compliant:

      - Subroutines overloaded with the C_PTR derived type:
          h5pget_f
          h5pget_fill_value_f
          h5pinsert_f
          h5pregister_f
          h5pset_f
          h5pset_fill_value_f
          h5rcreate_f
          h5rderefrence_f
          h5rget_name_f
          h5rget_obj_type_f
      - Subroutines overloaded with the C_PTR derived type 
        and simplified signatures: 
          h5aread_f
          h5awrite_f
          h5dread_f
          h5dwrite_f
      - New subroutines
          h5dvlen_reclaim_f
          h5literate_by_name_f
          h5literate_f
          h5ovisit_f
          h5tconvert_f
          h5pset_nbit_f
          h5pset_scaleoffset_f
      - Subroutines with additional optional parameters:
          h5pcreate_class_f
      (EIP - 2011/10/14)

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - None

Bug Fixes since HDF5-1.8.7
==========================

    Configuration
    -------------
    - Changed the size of H5_SIZEOF_OFF_T to 4 bytes (was 8) in the VMS
      h5pubconf.h based on the output of a test program.  (DER - 2011/10/12)
    - The Windows and VMS versions of H5pubconf.h were brought into sync with
      the linux/posix version. (DER - 2011/10/12)
    - Fixed a bug in the bin/trace Perl script where API functions
      that take a variable number of arguments were not processed for
      trace statement fixup. (DER - 2011/08/25)
    - The --enable-h5dump-packed-bits configure option has been removed.
      The h5dump code that this option conditionally enabled is now always
      compiled into h5dump. Please refer to the h5dump reference manual for 
      usage of the packed bits feature. (MAM - 2011/06/23 - HDFFV-7592)
    - Configure now uses the same flags and symbols in its tests that are
      used to build the library. (DER - 2011/05/24)

    Library
    -------
    - Corrected the error when copying attributes between files which are using
      different versions of the file format. (QAK - 2011/10/20 - HDFFV-7718)
    - Corrected the error when loading local heaps from the file, which could
      cause the size of the local heap's data block to increase dramatically.
      (QAK - 2011/10/14 - HDFFV-7767)
    - An application does not need to do H5O_move_msgs_forward() when writing
      attributes. Tests were checked into the performance suite.
      (VC - 2011/10/13 - HDFFV-7640)
    - Fixed a bug that occurred when using H5Ocopy on a committed datatype
      containing an attribute using that committed datatype.
      (NAF - 2011/10/13 - HDFFV-5854)
    - Added generic VFD I/O types to the SEC2 and log VFDs to ensure correct
      I/O sizes (and remove compiler warnings) between Windows and true POSIX
      systems.  (DER - 2011/10/12)
    - Corrected some Windows behavior in the SEC2 and log VFDs.  This mainly
      involved datatype correctness fixes, Windows API call error checks, 
      and adding the volume serial number to the VFD cmp functions.
      (DER - 2011/10/12)
    - Converted post-checks for the appropriate POSIX I/O sizes to pre-checks 
      in order to avoid platform-specific or undefined behavior.  
      (DER - 2011/10/12)
    - #ifdef _WIN32 instances have been changed to #ifdef H5_HAVE_WIN32_API. 
      H5_HAVE_VISUAL_STUDIO checks have been added where necessary. This is in 
      CMake only as configure never sets _WIN32. (ADB - 2011/09/12)
    - CLANG compiler with the options -fcatch-undefined-behavior and -ftrapv
      discovered 3 problems in tests and tools' library:
        1. In dsets.c, left shifting an unsigned int for 32 bits or more
           caused undefined behavior.
        2. In dt_arith.c, the INIT_INTEGER macro definition has an overflow
           when the value is a negative minimal and is being subtracted from one.
        3. In tools/lib/h5tools_str.c, right shifting an int value for 32 bits 
           or more caused undefined behavior.
      All the problems have been corrected. (SLU - 2011/09/02 - HDFFV-7674)
    - H5Epush2() now has the correct trace functionality (this is related to the
      bin/trace Perl script bug noted in the configure section).
      (DER - 2011/08/25)
    - Corrected mismatched function name typo of h5pget_dxpl_mpio_c and
      h5pfill_value_defined_c. (AKC - 2011/08/22 - HDFFV-7641)
    - Corrected an internal error in the library where objects that use committed 
      (named) datatypes and were accessed from two different file IDs could confuse
      the two and cause erroneous failures. (QAK - 2011/07/18 - HDFFV-7638)
    - In v1.6 of the library, there was an EOA for the whole MULTI file saved in the 
      super block.  We took it out in v1.8 of the library because it's meaningless 
      for the MULTI file. v1.8 of the library saves the EOA for the metadata file 
      instead, but this caused a backward compatibility problem.
      A v1.8 library couldn't open the file created with the v1.6 library. We
      fixed the problem by checking the EOA value to detect the file
      created with v1.6 library. (SLU - 2011/06/22) 
    - When a dataset had filters and reading data failed, the error message 
      didn't say which filter wasn't registered. It's fixed now. (SLU - 2011/06/03)

    Parallel Library
    ----------------
    - The Special Collective IO (IO when some processes do not contribute to the
      IO) and the Complex Derived Datatype MPI functionalities are no longer
      conditionally enabled in the library by configure. They are always
      enabled in order to take advantage of performance boosts from these
      behaviors. Older MPI implementations that do not allow for these
      functionalities can no longer by used by HDF5.
      (MAM - 2011/07/08 - HDFFV-7639).

    Tools
    -----
    - h5diff: fixed segfault over non-comparable attribute with different 
      dimention or rank, along with '-c' option to display details.
      (JKM - 2011/10/24 - HDFFV-7770)
    - Fixed h5diff to display all the comparable objects and attributes 
      regardless of detecting non-comparables. (JKM - 2011/09/16 - HDFFV-7693)
    - Fixed h5repack to update the values of references(object and region) of 
      attributes in h5repack for 1) references, 2) arrays of references, 
      3) variable-length references, and 4) compound references. 
      (PC - 2011/09/14 - HDFFV-5932)
    - h5diff: fixed a segfault over a dataset with container types 
      array and variable-length (vlen) along with multiple nested compound types. 
      Example: compound->array->compound, compound->vlen->compound.
      (JKM - 2011/09/01 - HDFFV-7712)
    - h5repack: added macro to handle a failure in H5Dread/write when memory
      allocation failed inside the library. (PC - 2011/08/19)
    - Fixed h5jam to not to allow the specifying of an HDF5 formatted file as 
      an input file for the -u (user block file) option. The original HDF5 file 
      would not be accessible if this behavior was allowed. 
      (JKM - 2011/08/19 - HDFFV-5941)
    - Revised the command help pages of h5jam and h5unjam. The descriptions
      were not up to date and some were missing. 
      (JKM - 2011/08/15 - HDFFV-7515)
    - Fixed h5dump to correct the schema location: 
      <hdf5:HDF5-File 
      xmlns:hdf5="http://hdfgroup.org/HDF5/XML/schema/HDF5-File" 
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation="http://hdfgroup.org/HDF5/XML/schema/HDF5-File 
      http://www.hdfgroup.org/HDF5/XML/schema/HDF5-File.xsd">
      (ADB - 2011/08/10)
    - h5repack: h5repack failed to copy a dataset if the layout is changed 
      from chunked with unlimited dimensions to contiguous.
      (PC - 2011/07/15 - HDFFV-7649)
    - Fixed h5diff: the "--delta" option considers two NaN of the same type 
      are different. This is wrong based on the h5diff description in the 
      Reference Manual. (PC - 2011/07/15 - HDFFV-7656)
    - Fixed h5diff to display an instructive error message and exit with
      an instructive error message when mutually exclusive options 
      (-d, -p and --use-system-epsilon) are used together. 
      (JKM - 2011/07/07 - HDFFV-7600)
    - Fixed h5dump so that it displays the first line of each element in correct
      position for multiple dimention array types. Before this fix, 
      the first line of each element in an array was
      displayed after the last line of previous element without
      moving to the next line (+indentation).
      (JKM - 2011/06/15 - HDFFV-5878)
    - Fixed h5dump so that it will display the correct value for 
      H5T_STD_I8LE datasets on the Blue-gene system (ppc64, linux, Big-Endian, 
      clustering). (AKC & JKM - 2011/05/12 - HDFFV-7594)
    - Fixed h5diff to compare a file to itself correctly. Previously h5diff
      reported either the files were different or not compatible in certain 
      cases even when comparing a file to itself. This fix also improves 
      performance when comparing the same target objects through verifying 
      the object and file addresses before comparing the details 
      in the objects. Examples of details are datasets and attributes. 
      (XCAO & JKM - 2011/05/06 - HDFFV-5928)

    F90 API
    -------
    - Modified the h5open_f and h5close_f subroutines to not to call H5open 
      and H5close correspondingly. While the H5open call just adds overhead, 
      the H5close call called by a Fortran application shuts down the HDF5 
      library. This makes the library inaccessible to the application. 
      (EIP & SB - 2011/10/13 - HDFFV-915)
    - Fixed h5tget_tag_f where the length of the C string was used to 
      repack the C string into the Fortran string. This lead to memory 
      corruption in the calling program. (SB - 2011/07/26)
    - Added defined constants:
        H5T_ORDER_MIXED_F (HDFFV-2767)
        H5Z_SO_FLOAT_DSCALE_F
        H5Z_SO_FLOAT_ESCALE_F
        H5Z_SO_INT_F
        H5Z_SO_INT_MINBITS_DEFAULT_F
        H5O_TYPE_UNKNOWN_F
        H5O_TYPE_GROUP_F
        H5O_TYPE_DATASET_F
        H5O_TYPE_NAMED_DATATYPE_F
        H5O_TYPE_NTYPES_F

    C++ API
    ------
    - None

    High-Level APIs:
    ------
    - Fixed the H5LTdtype_to_text function.  It had some memory problems when 
      dealing with some complicated data types. (SLU - 2011/10/19 - HDFFV-7701)
    - Fixed H5DSset_label seg faulting when retrieving the length of a 
      dimension label that was not set. (SB - 2011/08/07 - HDFFV-7673)
    - Fixed a dimension scale bug where if you create a dimscale, attach two 
      datasets to it, and then unattach them, you get an error if they are 
      unattached in order, but no error if you unattach them in reverse order. 
      (SB - 2011/06/07 - HDFFV-7605)

    Fortran High-Level APIs:
    ------
    - None


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 5.3                       xlc 10.1.0.5
    (NASA G-ADA)                  xlC 10.1.0.5
                                  xlf90 12.1.0.6

    FreeBSD 8.2-STABLE i386       gcc 4.2.1 [FreeBSD] 20070719
    (loyalty)                     g++ 4.2.1 [FreeBSD] 20070719
                                  gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    FreeBSD 8.2-STABLE amd64      gcc 4.2.1 [FreeBSD] 20070719
    (freedom)                     g++ 4.2.1 [FreeBSD] 20070719
                                  gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    IBM Blue Gene/P               bgxlc 9.0.0.9
    (LLNL uDawn)                  bgxlf90 11.1.0.7
                                  bgxlC 9.0.0.9

    Linux 2.6.16.60-0.54.5-smp    Intel(R) C, C++, Fortran Compilers
    x86_64                            Version 11.1 20090630
    (INL Icestorm)                   

    Linux 2.6.18-194.el5 x86_64   Intel(R) C, C++, Fortran Compilers
    (INL Fission)                     Version 12.0.2 20110112

    Linux 2.6.18-108chaos x86_64  Intel(R) C, C++, Fortran Compilers
    (LLNL Aztec)                      Version 11.1 20090630

    Linux 2.6.18-194.3.1.el5PAE   gcc (GCC) 4.1.2 and 4.4.2
    #1 SMP i686 i686 i386         GNU Fortran (GCC) 4.1.2 20080704
    (jam)                             (Red Hat 4.1.2-48) and 4.4.2 
                                  PGI C, Fortran, C++ 10.4-0 32-bit
                                  PGI C, Fortran, C++ 10.6-0 32-bit
                                  Intel(R) C Compiler for 32-bit
                                      applications, Version 11.1 
                                  Intel(R) C++ Compiler for 32-bit
                                      applications, Version 11.1
                                  Intel(R) Fortran Compiler for 32-bit
                                      applications, Version 11.1
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.18-238.12.1.el5     gcc 4.1.2 and 4.4.2
    #1 SMP x86_64 GNU/Linux       GNU Fortran (GCC) 4.1.2 20080704
    (koala)                           (Red Hat 4.1.2-46) and 4.4.2
                                      tested for both 32- and 64-bit binaries
                                  Intel(R) C, C++, Fortran Compilers for 
                                      applications running on Intel(R) 64, 
                                      Version 11.1.
                                  PGI C, Fortran, C++ Version 9.0-4
                                      for 64-bit target on x86-64
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    SGI Altix UV                  Intel(R) C, Fortran Compilers
    SGI ProPack 7 Linux               Version 11.1 20100806
    2.6.32.24-0.2.1.2230.2.PTF-   SGI MPT 2.02
    default #1 SMP                
    (NCSA ember)

    Dell NVIDIA Cluster           Intel(R) C, Fortran Compilers
    Red Hat Enterprise Linux 6        Version 12.0.4 20110427
    2.6.32-131.4.1.el6.x86_64     mvapich2 1.7rc1-intel-12.0.4
    (NCSA forge)

    SunOS 5.10 32- and 64-bit     Sun C 5.11 SunOS_sparc 2010/08/13
                                  Sun Fortran 95 8.5 SunOS_sparc 2010/08/13
                                  Sun C++ 5.11 SunOS_sparc 2010/08/13

    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 (cmake)
                                  Cygwin(1.7.9 native gcc(4.5.3) compiler and gfortran)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 (cmake)
                                  Cygwin(1.7.9 native gcc(4.5.3) compiler and gfortran)

    Windows Vista                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows Vista x64             Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Mac OS X 10.8.0 (Intel 64-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
    Darwin Kernel Version 10.8.0  GNU Fortran (GCC) 4.6.1
                                  Intel C, C++ and Fortran compilers 12.1.0

    Mac OS X 10.8.0 (Intel 32-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
    Darwin Kernel Version 10.8.0  GNU Fortran (GCC) version 4.6.1
          Intel C, C++ and Fortran compilers 12.1.0

    Fedora 12 2.6.32.16-150.fc12.ppc64 #1 SMP ppc64 GNU/Linux
                                  gcc (GCC) 4.4.4 20100630 (Red Hat 4.4.4-10)
                                  GNU Fortran (GCC) 4.4.4 20100630 (Red Hat 4.4.4-10)

    Debian6.0.3 2.6.32-5-686 #1 SMP i686 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5

    Debian6.0.3 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5

    Fedora15 2.6.40.6-0.fc15.i686.PAE #1 SMP i686 i686 i386 GNU/Linux
                                  gcc (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9)
                                  GNU Fortran (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9)

    Fedora15 2.6.40.6-0.fc15.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9)
                                  GNU Fortran (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9)

    SUSE 11.4 2.6.37.6-0.7-desktop #1 SMP PREEMPT i686 i686 i386 GNU/Linux
                                  gcc (SUSE Linux) 4.5.1 20101208
                                  GNU Fortran (SUSE Linux) 4.5.1 20101208

    SUSE 11.4 2.6.37.6-0.7-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.5.1 20101208
                                  GNU Fortran (SUSE Linux) 4.5.1 20101208

    Ubuntu 11.10 3.0.0-12-generic #20-Ubuntu SMP i686 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
                                  GNU Fortran (Ubuntu/Linaro 4.6.4-9ubuntu3) 4.6.1

    Ubuntu 11.10 3.0.0-12-generic #20-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
                                  GNU Fortran (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1
    
    OpenVMS Alpha 8.3             HP C V7.3-009
                                  HP Fortran V8.2-104679-48H9K
                                  HP C++ V7.3-009

    Cray Linux Environment (CLE)  PrgEnv-pgi 2.2.74
    hopper.nersc.gov              pgcc 11.7-0 64-bit target on x86-64 Linux -tp k8e
    franklin.nersc.gov            pgf90 11.7-0 64-bit target on x86-64 Linux -tp k8e
                                  pgCC 11.7-0 64-bit target on x86-64 Linux -tp k8e

Tested Configuration Features Summary
=====================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                                 C        F90    F90      C++   zlib  SZIP
                                         parallel        parallel
Solaris2.10 32-bit                         n        y      n        y     y    y
Solaris2.10 64-bit                         n        y      n        y     y    y
Windows XP                                 n        y(4)   n        y     y    y
Windows XP x64                             n        y(4)   n        y     y    y
Windows Vista                              n        y(4)   n        y     y    y
Windows Vista x64                          n        y(4)   n        y     y    y
OpenVMS Alpha                              n        y      n        y     y    n
Mac OS X 10.8 Intel 32-bit                 n        y      n        y     y    y
Mac OS X 10.8 Intel 64-bit                 n        y      n        y     y    y
AIX 5.3 32- and 64-bit                     n        y      n        y     y    y
FreeBSD 8.2-STABLE 32&64 bit               n        x      n        x     y    y
CentOS 5.5 Linux 2.6.18-194 i686 GNU (1)W  y        y(2)   y        y     y    y
CentOS 5.5 Linux 2.6.18-194 i686 Intel  W  n        y      n        y     y    n
CentOS 5.5 Linux 2.6.18-194 i686 PGI    W  n        y      n        y     y    n
CentOS 5.5 Linux 2.6.16 x86_64 GNU (1)  W  y        y(3)   y        y     y    y
CentOS 5.5 Linux 2.6.16 x86_64 Intel    W  n        y      n        y     y    n
CentOS 5.5 Linux 2.6.16 x86_64 PGI      W  n        y      n        y     y    y
Fedora 12 Linux 2.6.32.16-150.fc12.ppc64   n        y      n        y     y    y
SGI ProPack 7 Linux 2.6.32.24              y        y      y        y     y    y
Red Hat Enterprise Linux 6                 y        y      y        y     y    y
CLE hopper.nersc.gov                       y        y(3)   y        y     y    n  
CLE franklin.nersc.gov                     y        y(3)   y        y     y    n  


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                         y       y         y         y        
Solaris2.10 64-bit                         y       y         y         y        
Windows XP                                 y       y(4)      y         n        
Windows XP x64                             y       y(4)      y         n        
Windows Vista                              y       y(4)      y         y
Windows Vista x64                          y       y(4)      y         y
OpenVMS Alpha                              n       n         n         n
Mac OS X 10.8 Intel 32-bit                 y(5)    n         y         n        
Mac OS X 10.8 Intel 64-bit                 y(5)    n         y         n        
AIX 5.3 32- and 64-bit                     n       n         n         y        
FreeBSD 8.2-STABLE 32&64 bit               y       x         x         y        
CentOS 5.5 Linux 2.6.18-128 i686 GNU (1)W  y       y(2)      y         y        
CentOS 5.5 Linux 2.6.18-128 i686 Intel  W  y       y         y         n        
CentOS 5.5 Linux 2.6.18-128 i686 PGI    W  y       y         y         n        
CentOS 5.5 Linux 2.6.16 x86_64 GNU (1)  W  y       y         y         y        
CentOS 5.5 Linux 2.6.16 x86_64 Intel    W  y       y         y         n        
CentOS 5.5 Linux 2.6.16 x86_64 PGI      W  y       y         y         n        
Fedora 12 Linux 2.6.32.16-150.fc12.ppc64   y       y         y         y 
SGI ProPack 7 Linux 2.6.32.24              y       y         y         n 
Red Hat Enterprise Linux 6                 y       y         y         n
CLE hopper.nersc.gov                       n       n         n         n
CLE franklin.nersc.gov                     n       n         n         n

           (1) Fortran compiled with gfortran.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2008 w/ Intel Fortran 10.1 (Cygwin shared libraries are not supported)
           (5) C and C++ shared libraries will not be built when Fortran is enabled.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============

* The STDIO VFD does not work on some architectures, possibly due to 32/64
  bit or large file issues.  The basic STDIO VFD test is known to fail on
  64-bit SunOS 5.10 on SPARC when built with -m64 and 32-bit OS X/Darwin
  10.7.0.  The STDIO VFD test has been disabled while we investigate and
  a fix should appear in a future release, possibly 1.8.9.
  (DER - 2011/10/14)

* h5diff can report inconsistent results when comparing datasets of enum type
  that contain invalid values.  This is due to how enum types are handled in
  the library and will be addressed in the next release.
  (DER - 2011/10/14 - HDFFV-7527)

* The links test can fail under the stdio VFD due to some issues with external
  links.  This will be investigated and fixed in a future release.
  (DER - 2011/10/14 - HDFFV-7768)

* After the shared library support was fixed for some bugs, it was discovered
  that "make prefix=XXX install" no longer works for shared libraries. It
  still works correctly for static libraries. Therefore, if you want to
  install the HDF5 shared libraries in a location such as /usr/local/hdf5,
  you need to specify the location via the --prefix option during configure 
  time. E.g, ./configure --prefix=/usr/local/hdf5 ...
  (AKC - 2011/05/07 - HDFFV-7583)

* The parallel test, t_shapesame, in testpar/, may run for a long time and may
  be terminated by the alarm signal.  If that happens, one can increase the
  alarm seconds (default is 1200 seconds = 20 minutes) by setting the
  environment variable, $HDF5_ALARM_SECONDS, to a larger value such as 3600
  (60 minutes).  Note that the t_shapesame test may fail in some systems 
  (see the "While working on the 1.8.6 release..." problem below).  If 
  it does, it will waste more time if $HDF5_ALARM_SECONDS is set
  to a larger value. (AKC - 2011/05/07)

* The C++ and FORTRAN bindings are not currently working on FreeBSD.
  (QAK - 2011/04/26)

* Shared Fortran libraries are not quite working on AIX. While they are
  generated when --enable-shared is specified, the fortran and hl/fortran
  tests fail. We are looking into the issue. HL and C++ shared libraries
  should now be working as intended, however. (MAM - 2011/04/20)

* The --with-mpe configure option does not work with Mpich2. (AKC - 2011/03/10)

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or file systems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/
  (NAF - 2011/01/19)

* The library's test dt_arith.c showed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to
  skip this test until we can solve the problem.
  (SLU - 2010/05/05 - HDFFV-1264)

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added in.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug in 1.8 library.  Because there's only one user 
  complaining about it, we (Elena, Quincey, and I) decided to leave it as 
  it is (see bug report #1279).  Quincey will make a plan for 1.10.
  (SLU - 2010/02/02)

* MinGW has a missing libstdc++.dll.a library file and will not successfully link
  C++ applications/tests. Do not use the enable-cxx configure option. Read all of
  the INSTALL_MINGW.txt file for all restrictions. (ADB - 2009/11/11)

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.
  (MAM - 2009/11/04)
  
* The PathScale MPI implementation, accessing a Panasas file system, would
  cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file does not
  exist. This is due to the MPI_File_open() call failing if the mode has
  the MPI_MODE_EXCL bit set. (AKC - 2009/08/11 - HDFFV-988)
 
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO. (CMC - 2009/04/28)

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  (AKC - 2008/11/10)
  
* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect to see this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  (AKC - 2008/05/28)

* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  (SLU - 2005/06/30)

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.
  (AKC - 2004/12/08)


%%%%1.8.7%%%%   


HDF5 version 1.8.7 released on Tue May 10 09:24:44 CDT 2011
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.6 and 
HDF5 1.8.7, and contains information on the platforms tested and 
known problems in HDF5-1.8.7. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.7 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.7 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.7 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.7 (current 
release) versus Release 1.8.6":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.6
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - Configure now generates Makefiles that build in "silent make mode"
      by default in which compile and link lines are significantly
      simplified for clarity. To override this and view actual compile and
      link lines during building, the --disable-silent-rules flag can be used
      at configure time, or the 'make' command can be followed by V=1, to
      indicate a "verbose" make. (MAM - 2011/4/14).
    - Added mpicc and mpif90 as the default C and Fortran compilers for Linux
      systems when --enable-parallel is specified but no $CC or $FC is defined.
      (AKC - 2011/2/7)
    - Added a new configure option, "--enable-unsupported", which can
      be used to stop configure from preventing the use of unsupported
      configure option combinations, such as c++ in parallel or Fortran
      with threadsafe. Use at your own risk, as it may result in a 
      library that won't compile or run as expected!
      (MAM - 2010/11/17 - Bug 2061)

    Library
    -------
    - The library allows the dimension size of a dataspace to be zero.  In 
      the past, the library would allow this only if the maximal dimension 
      size was unlimited. Now there is no such restriction, but no data 
      can be written to this kind of dataset. (SLU - 2011/4/20)
    - We added two new macros, H5_VERSION_GE and H5_VERSION_LE, to let users
      compare certain version numbers with the library being used. (SLU -
      2011/4/20) 
    - Added ability to cache files opened through external links.  Added new
      public functions H5Pset_elink_file_cache_size(),
      H5Pget_elink_file_cache_size(), and H5Fclear_elink_file_cache().
      (NAF - 2011/02/17)
    - Finished implementing all options for 'log' VFD.  (QAK - 2011/1/25)
    - Removed all old code for Metrowerks compilers, bracketed by
      __MWERKS__). Metrowerks compiler is long gone. (AKC - 2010/11/17) 

    Parallel Library
    ----------------
    - None
 
    Tools
    -----
     - h5diff: Added new "verbose with levels" option, '-vN, --verbose=N'.
       The old '-v, --verbose' option is deprecated but remains available;
       it is exactly equivalent to '-v0, --verbose=0'.
       The new levels 1 ('-v1' or '--verbose=1') and 2 ('-v2' or 
       '--verbose=2') can be specified to view more information regarding 
       attributes differences.  Bug #2121 (JKM 2011/3/23)
     - h5dump: Added new option --enable-error-stack. This option will 
       display error stack information in the output stream. This is 
       useful when the "h5dump: Unable to print data" message is output.
       (ADB - 2011/03/03)

    High-Level APIs
    ---------------
    - Fortran LT make datasets routines (H5LTmake_dataset_f, 
      h5ltmake_dataset_int_f, h5ltmake_dataset_float_f, h5ltmake_dataset_double_f) 
      and LT read datasets routines (h5ltread_dataset_f,h5ltread_dataset_int_f,
      h5ltread_dataset_float_f, 5ltread_dataset_double_f) can now handle 
      4-dimensional to 7-dimensional rank datasets. HDFFV-1217 (MSB-2011/4/24/2011)

    F90 API
    -------
     - None

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - Intel V11.1 uses now -O3 optimization in production mode (EIP - 2010/10/08)
             


Bug Fixes since HDF5-1.8.6
==========================

    Configuration
    -------------
    - Shared C++ and HL libraries on AIX should now be working correctly.
      Note that Fortran shared libraries are still not working on AIX. 
      (See the Known Problems section, below). (MAM - 2011/4/20)
    - Removed config/ibm-aix6.x. All IBM-AIX settings are in one file,
      ibm-aix. (AKC - 2011/4/14)
    - Shared C libraries are no longer disabled on Mac when Fortran
      is enabled. Shared Fortran libraries are still not supported on Mac,
      so configure will disable them by default, but this is overrideable
      with the new --enable-unsupported configure option. The configure
      summary has been updated to reflect the fact that the shared-ness of 
      the C++/Fortran wrapper libraries may not align with the C library.
      (MAM - 2011/04/11 - HDFFV-4353).

    Library
    -------
    - Changed assertion failure when decoding a compound datatype with no
      fields into a normal error failure.  Also prohibit using this sort
      of datatype for creating an attribute (as is already the case for
      datasets and committed (named) datatypes).  (QAK - 2011/04/15, Jira 
      issue #HDFFV-2766)
    - Tell the VFL flush call that the file will be closing, allowing
      the VFDs to avoid sync'ing the file (particularly valuable in parallel).
      (QAK - 2011/03/09)
    - The datatype handler created with H5Tencode/decode used to have the 
      reference count 0 (zero); it now has the reference count 1 (one).
      (SLU - 2011/2/18)
    - Fixed the definition of H5_HAVE_GETTIMEOFDAY on Windows so that
      HDgettimeofday() is defined and works properly.  Bug HDFFV-5931
      (DER - 2011/04/14)
    - Added basic VFD tests for the Windows, STDIO and log VFD tests.
      (DER - 2011/04/11)

    Parallel Library
    ----------------
    - None

    Tools
    -----
    - Updated h5dump test case script to prevent entire test failure when 
      source directory is read-only. Bug #HDFFV-4342 (JKM 2011/4/12)
    - Fixed h5dump displaying incorrect values for H5T_STD_I8BE type data in
      attribute on Big-Endian machine. H5T_STD_I8BE is unsigned 8bit type,
      so h5dump is supposed to display -2 instead of 254. It worked correctly
      on Little-Endian system , but not on Big-Endian system.  Bug #HDFFV-4358
      (JKM 04/08/2011)
    - Updated some HDF5 tools to standardize the option name as 
      '--enable-error-stack' for printing HDF5 error stack messages. h5ls and 
      h5dump have been updated. For h5ls, this replaces "-e/--errors" option, 
      which is deprecated. For h5dump, this is a new option. Bug #2182 
      (JKM 2011/3/30)
    - Fixed the h5diff --use-system-epsilon option. The formula used in the 
      calculation was changed from ( |a - b| / b ) to ( |a - b| ). 
      This was done to improve performance. Bug #2184 (JKM 2011/3/24)
    - Fixed output for H5T_REFERENCE in h5dump. According to the BNF document
      the output of a H5T_REFERENCE should be followed by the type;
      <reference> ::= H5T_REFERENCE { <ref_type> }
      <ref_type> ::= H5T_STD_REF_OBJECT | H5T_STD_REF_DSETREG
      Previously this was only displayed if the -R option was used.
      Bug #1725 (ADB 2011/3/28)
    - Fixed two h5diff issues. 1) h5diff compared attributes correctly only 
      when two objects had the same number of attributes and the attribute 
      names were identical. 2) h5diff did not display useful information about 
      attribute differences. Bug #2121 (JKM 2011/3/17)
    - Fixed a memory leak in h5diff that occurred when accessing symbolic links 
      with the --follow-symlink option. Bug #2214  (JKM 2011/3/18)
    - Fixed a memory leak in h5diff that occurred when accessing variable length 
      string data. Bug #2216 (JKM 2011/3/18)
    - Fixed and improved the help page for h5ls -a, --address option. 
      Bug #1904 (JKM 2011/3/11)
    - Fixed h5copy to enable copying an object into the same HDF5 file.
      Previously h5copy displayed an error message when the target file 
      was the same as the source file. (XCAO 2011/3/8)
    - Fixed an h5dump problem that caused the tool to skip some data elements 
      in large datasets with a large array datatype on Windows. This issue 
      arose only on Windows due to the different return behavior of the 
      _vsnprintf() function.  Bug #2161 (JKM 2011/3/3)
    - Fixed h5dump which was skipping some array indices in large datasets 
      with a relatively large array datatype. The interval of skipped indices
      varied according to the size of the array. Bug #2092 (JKM 2011/2/15)
    - Fixed h5diff which was segfaulting when comparing compound datasets
      with a combination of fixed-length string datatypes and variable-length
      string datatypes in certain orders. Bug #2089 (JKM 2010/12/28)
    - Improved h5diff performance. 1) Now use HDmemcmp() before comparing two 
      elements. 2) Replace expensive H5Tequals() calls. 3) Retrieve datatype
      information at dataset level, not at each element level for compound 
      datasets. HDFFV-7516 (JKM 2011/4/18) 
    - Fixed h5ls to display nested compound types with curly brackets 
      when -S (--simple) option is used with -l (--label), so it shows  
      which members (in curly brackets) belong to which nested compound type, 
      making the output clearer.  Bug #1979 (JKM 2010/11/09)
    - Fixed h5diff to handle variable-length strings in a compound dataset 
      and variable-length string arrays in a compound dataset correctly.
      Garbage values were previously displayed when h5diff compared multiple 
      variable-length strings in a compound type dataset. 
      Bug #1989 (JKM 2010/10/28)
    - Fixed h5copy to fail gracefully when copying an object to a non-
      existing group without the -p option. Bug #2040 (JKM 2010/10/18)

    F90 API
    ------
    - None

    C++ API
    ------
    - None

    High-Level APIs:
    ------
    - None

    Fortran High-Level APIs:
    ------
    -  h5tbmake_table_f: Fixed error in passing an array of characters with different 
       length field names.
    -  h5tget_field_info_f: Fixed error with packing the C strings into a Fortran 
       array of strings. Added optional argument called 'maxlen_out' which returns 
       the maximum string character length in a field name element.
       Bug HDFFV-1255 (MSB- 4/17/2011)




Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 6.1                       xlc 11.1.0.3
    (NCSA BP)                     xlC 11.1.0.3
                                  xlf90 13.1.0.3
                                  mpcc_r 11.1.0.3
                                  mpxlf90_r 13.1.0.3

    FreeBSD 8.2-STABLE i386       gcc 4.2.1 [FreeBSD] 20070719
    (loyalty)                     g++ 4.2.1 [FreeBSD] 20070719
                                  gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    FreeBSD 8.2-STABLE amd64      gcc 4.2.1 [FreeBSD] 20070719
    (freedom)                     g++ 4.2.1 [FreeBSD] 20070719
                                  gcc 4.6.1 20110422
                                  g++ 4.6.1 20110422
                                  gfortran 4.6.1 20110422

    Linux 2.6.18-194.3.1.el5PAE   gcc (GCC) 4.1.2 and 4.4.2
    #1 SMP i686 i686 i386         G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010)
    (jam)                         GNU Fortran (GCC) 4.1.2 20080704 
                                      (Red Hat 4.1.2-48) and 4.4.2
                                  PGI C, Fortran, C++ 10.4-0 32-bit
                                  PGI C, Fortran, C++ 10.6-0 32-bit
                                  Intel(R) C Compiler for 32-bit
                                      applications, Version 11.1 
                                  Intel(R) C++ Compiler for 32-bit
                                      applications, Version 11.1
                                  Intel(R) Fortran Compiler for 32-bit
                                      applications, Version 11.1
                                  Absoft 32-bit Fortran 95 10.0.7
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.18-194.17.1.el5     gcc 4.1.2 and 4.4.2
    #1 SMP x86_64 GNU/Linux       G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010)
    (amani)                           tested for both 32- and 64-bit binaries
                                  GNU Fortran (GCC) 4.1.2 20080704
                                      (Red Hat 4.1.2-46) and 4.4.2
                                  Intel(R) C, C++, Fortran Compilers for 
                                      applications running on Intel(R) 64, 
                                      Version 11.1.
                                  PGI C, Fortran, C++ Version 9.0-4
                                      for 64-bit target on x86-64
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    SGI ProPack 7 Linux           Intel(R) C++ Version 11.1 20100806
    2.6.32.24-0.2.1.2230.2.PTF-   Intel(R) Fortran Version 11.1 20100806
    default #1 SMP                SGI MPT 2.01
    SGI Altix UV
    (NCSA ember)

    SunOS 5.10 32- and 64-bit     Sun C 5.9 Sun OS_sparc Patch 124867-16
    (linew)                       Sun Fortran 95 8.3 Sun OS_sparc Patch 127000-13
                                  Sun C++ 5.9 Sun OS_sparc Patch 124863-26
                                  Sun C 5.10 SunOS_sparc Patch 141861-07
                                  Sun Fortran 95 8.4 SunOS_sparc Patch 128231-06
                                  Sun C++ 5.10 SunOS_sparc 128228-11

    Intel Xeon Linux 2.6.18-      gcc 4.2.4
    92.1.10.el5_lustre.1.6.6smp-  Intel(R) C++ Version 10.1.017
    perfctr #8 SMP                Intel(R) Fortran Compiler Version 10.1.017
    (NCSA abe)                    Open MPI 1.3.2
                                  MVAPICH2-1.5.1_pgi-10.8

    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 (cmake)
                                  Cygwin(1.7.7 native gcc(4.3.4) compiler and gfortran)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 (cmake)
                                  Cygwin(1.7.7 native gcc(4.3.4) compiler and gfortran)

    Windows Vista                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows Vista x64             Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Mac OS X 10.7.0 (Intel 64-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1
    Darwin Kernel Version 10.7.0  GNU Fortran (GCC) 4.6.0 20101106 (experimental)
                                  Intel C, C++ and Fortran compilers 12.0.1.122 20101110

    Mac OS X 10.7.0 (Intel 32-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5666) (dot 3)
    Darwin Kernel Version 10.7.0  GNU Fortran (GCC) version 4.4.0 20090123 (experimental) 
							[trunk revision 143587]

    Fedora 12 2.6.32.16-150.fc12.ppc64 #1 SMP ppc64 GNU/Linux
                                  gcc (GCC) 4.4.4 20100630 (Red Hat 4.4.4-10)
                                  GNU Fortran (GCC) 4.4.4 20100630 (Red Hat 4.4.4-10)

    Debian6.01 2.6.32-5-686 #1 SMP i686 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5

    Debian6.01 2.6.32-5-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.4.5-8) 4.4.5
                                  GNU Fortran (Debian 4.4.5-8) 4.4.5

    Fedora14 2.6.35.12-88.fc14.i686.PAE #1 SMP i686 i686 i386 GNU/Linux
                                  gcc (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)
                                  GNU Fortran (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)

    Fedora14 2.6.35.12-88.fc14.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)
                                  GNU Fortran (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)

    SUSE 11.4 2.6.37.1-1.2-desktop #1 SMP PREEMPT i686 i686 i386 GNU/Linux
                                  gcc (SUSE Linux) 4.5.1 20101208
                                  GNU Fortran (SUSE Linux) 4.5.1 20101208

    SUSE 11.4 2.6.37.1-1.2-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.5.1 20101208
                                  GNU Fortran (SUSE Linux) 4.5.1 20101208

    Ubuntu 10.10 2.6.35-28-generic #50-Ubuntu SMP i686 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
                                  GNU Fortran (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5

    Ubuntu 10.10 2.6.35-28-generic #50-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
                                  GNU Fortran (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
    
    OpenVMS Alpha 8.3             HP C V7.3-009
                                  HP Fortran V8.2-104679-48H9K
                                  HP C++ V7.3-009

Tested Configuration Features Summary
========================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                                 C        F90    F90      C++   zlib  SZIP
                                         parallel        parallel
Solaris2.10 32-bit                         n        y      n        y     y     y
Solaris2.10 64-bit                         n        y      n        y     y     y
Windows XP                                 n        y(4)   n        y     y     y
Windows XP x64                             n        y(4)   n        y     y     y
Windows Vista                              n        y(4)   n        y     y     y
Windows Vista x64                          n        y(4)   n        y     y     y
OpenVMS Alpha                              n        y      n        y     y     n
Mac OS X 10.7 Intel 32-bit                 n        y      n        y     y     y
Mac OS X 10.7 Intel 64-bit                 n        y      n        y     y     y
AIX 6.1 32- and 64-bit                     y        y      y        y     y     y
FreeBSD 8.2-STABLE 32&64 bit               n        x      n        x     y     y
CentOS 5.5 Linux 2.6.18-194 i686 GNU (1)W  y        y(2)   y        y     y     y
CentOS 5.5 Linux 2.6.18-194 i686 Intel  W  n        y      n        y     y     n
CentOS 5.5 Linux 2.6.18-194 i686 PGI    W  n        y      n        y     y     n
CentOS 5.5 Linux 2.6.16 x86_64 GNU (1)  W  y        y(3)   y        y     y     y
CentOS 5.5 Linux 2.6.16 x86_64 Intel    W  n        y      n        y     y     n
CentOS 5.5 Linux 2.6.16 x86_64 PGI      W  n        y      n        y     y     y
RedHat EL4 2.6.18 Xeon Lustre           C  y        y      y        y     y     n
Fedora 12 Linux 2.6.32.16-150.fc12.ppc64   n        y      n        y     y     y
SGI Linux 2.6.32.19                        y        y      y        y     y     y


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                         y       y         y         y        
Solaris2.10 64-bit                         y       y         y         y        
Windows XP                                 y       y(4)      y         n        
Windows XP x64                             y       y(4)      y         n        
Windows Vista                              y       y(4)      y         y
Windows Vista x64                          y       y(4)      y         y
OpenVMS Alpha                              n       n         n         n
Mac OS X 10.7 Intel 32-bit                 y(5)    n         y         n        
Mac OS X 10.7 Intel 64-bit                 y(5)    n         y         n        
AIX 6.1 32- and 64-bit                     n       n         n         y        
FreeBSD 8.2-STABLE 32&64 bit               y       x         x         y        
CentOS 5.5 Linux 2.6.18-128 i686 GNU (1)W  y       y(2)      y         y        
CentOS 5.5 Linux 2.6.18-128 i686 Intel  W  y       y         y         n        
CentOS 5.5 Linux 2.6.18-128 i686 PGI    W  y       y         y         n        
CentOS 5.5 Linux 2.6.16 x86_64 GNU (1)  W  y       y         y         y        
CentOS 5.5 Linux 2.6.16 x86_64 Intel    W  y       y         y         n        
CentOS 5.5 Linux 2.6.16 x86_64 PGI      W  y       y         y         n        
RedHat EL4 2.6.18 Xeon Lustre           C  y       y         y         n
Fedora 12 Linux 2.6.32.16-150.fc12.ppc64   y       y         y         y 
SGI Linux 2.6.32.19                        y       y         y         y 

           (1) Fortran compiled with gfortran.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2008 w/ Intel Fortran 10.1 (Cygwin shared libraries are not supported)
           (5) C and C++ shared libraries will not be built when Fortran is enabled.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* After the shared library support was fixed for some bugs, it was discovered
  that "make prefix=XXX install" no longer works for shared libraries. It
  still works correctly for static libraries. Therefore, if you want to
  install the HDF5 shared libraries in a location such as /usr/local/hdf5,
  you need to specify the location via the --prefix option during configure 
  time. E.g, ./configure --prefix=/usr/local/hdf5 ...
  (AKC - 2011/05/07 HDFFV-7583)

* The parallel test, t_shapesame, in testpar/, may run for a long time and may
  be terminated by the alarm signal.  If that happens, one can increase the
  alarm seconds (default is 1200 seconds = 20 minutes) by setting the
  environment variable, $HDF5_ALARM_SECONDS, to a larger value such as 3600
  (60 minutes).  Note that the t_shapesame test may fail in some systems 
  (see the "While working on the 1.8.6 release..." problem below).  If 
  it does, it will waste more time if $HDF5_ALARM_SECONDS is set
  to a larger value. (AKC - 2011/05/07)

* The C++ and FORTRAN bindings are not currently working on FreeBSD.
  (QAK - 2011/04/26)

* Shared Fortran libraries are not quite working on AIX. While they are
  generated when --enable-shared is specified, the fortran and hl/fortran
  tests fail. We are looking into the issue. HL and C++ shared libraries
  should now be working as intended, however. (MAM - 2011/04/20)

* The --with-mpe configure option does not work with Mpich2. AKC - 2011/03/10

* If parallel gmake (e.g., gmake -j 4) is used, the "gmake clean" command
  sometimes fails in the perform directory due to the attempt to remove the
  executable of h5perf or h5perf_serial by two "parallel" commands. This error
  has no consequence on the functionality of the HDF5 library or install. It
  is fixed in the next release. AKC - 2011/01/25

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or file systems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/

* The library's test dt_arith.c showed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to
  skip this test until we can solve the problem.  Please see bug #1813.
  SLU - 2010/5/5 

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added in.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug in 1.8 library.  Because there's only one user 
  complaining about it, we (Elena, Quincey, and I) decided to leave it as 
  it is (see bug report #1279).  Quincey will make a plan for 1.10.
  SLU - 2010/2/2

* MinGW has a missing libstdc++.dll.a library file and will not successfully link
  C++ applications/tests. Do not use the enable-cxx configure option. Read all of
  the INSTALL_MINGW.txt file for all restrictions. ADB - 2009/11/11
  
* The PathScale MPI implementation, accessing a Panasas file system, would
  cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file does not
  exist. This is due to the MPI_File_open() call failing if the mode has
  the MPI_MODE_EXCL bit set. (See bug 1468 for details.) AKC - 2009/8/11
 
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO. CMC - 2009/04/28

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  AKC - 2008/11/10

* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect to see this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  AKC - 2008/05/28

* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.

* There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

* On cobalt, an SGI Altix SMP ia64 system, Intel compiler version 10.1 (which
  is the default on that system) does not work properly and results in
  failures during make check (in a static build) and make installcheck (during
  a shared build). This appears to be a compiler optimization problem.
  Reducing optimization by setting CFLAGS to -O1 or below resolves the issue.
  Alternatively, using a newer version of the compiler (11.0) also works as
  intended. MAM - 2010/06/01

* h5diff will not report enum value differences when one or both of the values
  is not a valid enumeration value.  The source of this bug has been identified
  and it will be fixed in 1.8.8. DER - 2011/04/27


%%%%1.8.6%%%%   


HDF5 version 1.8.6 released on Mon Feb 14 10:26:30 CST 2011
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.5 and 
HDF5 1.8.6, and contains information on the platforms tested and 
known problems in HDF5-1.8.6. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.6 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.6 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.6 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.6 (current 
release) versus Release 1.8.5":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.5
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - CMake: Improved CPack packaging, added parallel commands, improved
      configuration options (better similarity to configure), added more
      tests, better support for use in external cmake projects. 
      (ADB - 2010/10/07)
    - The default configuration setting for official releases is 
      --enable-production. For unofficial releases, the default configuration 
      setting has been --disable-production. (AKC  - 2010/05/28)
    Library
    -------
    - Added support for thread safety on Windows using the Windows threads 
      library. Use the HDF5_ENABLE_THREADSAFE option in CMake on a Windows 
      platform to enable this functionality. This is supported on Windows 
      Vista and newer Windows operating systems. (MAM - 2010/09/10)
    - H5Tset_order and H5Tget_order now support all datatypes.  A new byte 
      order, H5T_ORDER_MIXED, has been added specifically for a compound 
      datatype and its derived type.  (SLU - 2010/8/23) 
    - Improved performance of metadata I/O by changing the default algorithm 
      to perform I/O from all processes (instead of just process 0) when using 
      parallel I/O drivers. (QAK - 2010/07/19)
    - Improved performance of I/O on datasets with the same shape, but 
      different rank. (QAK - 2010/07/19)
    - Improved performance of the chunk cache by avoiding unnecessary b-tree 
      lookups of chunks already in cache. (NAF - 2010/06/15) 
      
    Parallel Library
    ----------------
    - None
 
    Tools
    -----
    - h5diff: Added a new flag: --exclude-path.  The specified path to an 
      object will be excluded when comparing two files or two groups. If a 
      group is specified to be excluded, all member objects of that group 
      will be excluded.  (JKM - 2010/09/16).
    - h5ls: Added a new flag: --no-dangling-links.  See --help output for 
      details. (JKM - 2010/06/15)
    - h5ls: Added a new flag --follow-symlinks.  See --help output for 
      details. (JKM - 2010/05/25)
      
    High-Level APIs
    ---------------
    - None

    F90 API
    -------
     - None

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - Sun C and C++ 5.10 and Sun Fortran 95 8.4.
    - Mac OS X 10.6.4 with gcc 4.2.1 and gfortran 4.6


Bug Fixes since HDF5-1.8.5
==========================

    Configuration
    -------------
    - The default number of MPI processes for testing purposes has been 
      changed from 3 to 6.  (AKC - 2010/11/11)
    - Some tests in tools/h5repack may fail in AIX systems when -q32 mode is 
      used. The error is caused by not requesting enough memory in default.
      Added "env LDR_CNTRL=MAXDATA=0x20000000@DSA" into the $RUNSERIAL and
      $RUNPARALLE in the AIX config file so that executables are tested with
      more memory.  (AKC - 2010/11/11)
    - Removed recognition of the parallel compilers of LAM(hcc) and
      ChMPIon(cmpicc) since we have no access to these two MPI implementations
      and cannot verify their correctness. (AKC - 2010/07/14 - Bug 1921)
    - PHDF5 was changed to use "mpiexec" instead of mpirun as the default 
      MPI applications startup command as defined in the MPI-2 definition, 
      section 4.1. (AKC - 2010/06/11 - Bug 1921)
      
    Library
    -------
    - Fixed a bug that caused big endian machines to generate corrupt files
      when using the scale-offset filter with floating point data or fill
      values.  Note that such datasets will no longer be readable by any
      by any machine after this patch.  (NAF - 2010/02/02 - Bug 2131)
    - Retrieving a link's name by index in the case where the link is external
      and the file that the link refers to doesn't exist will now fail 
      gracefully rather than cause a segmentation fault. (MAM - 2010/11/17)
    - Modified metadata accumulator to better track accumulated dirty metadata 
      in an effort to reduce unnecessary I/O in certain situations and to 
      fix some other corner cases which were prone to error. (MAM - 2010/10/15)
    - Added a new set of unit tests that are run during 'make check' to verify 
      the behavior of the metadata accumulator. (MAM - 2010/10/15)
    - Modified library to always cache symbol table information.  Libraries
      from version 1.6.3 and earler have a bug which causes them to require 
      this information for some operations. (NAF - 2010/09/21 - Bug 1864)
    - Fixed a bug where the library could generate an assertion/core dump when
      a file that had been created with H5Pset_libver_bounds(fapl,
      H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) but didn't have a superblock
      extension was later reopened.  (QAK - 2010/09/16 - Bug 1968)
    - Fixed a bug that could occur when getting information for a new-style
      group that was previously opened through a file handle that was later
      closed. (NAF - 2010/09/15)
    - Added define check in H5public.h if stdint.h is supported by the C++
      compiler. This define is only available on Windows with VS2010 and using
      CMake to build the library. (ADB - 2010/09/13 - Bug 1938)
    - When a mandatory filter failed to write data chunks, the dataset
      couldn't close (bug 1260).  The fix releases all resources and closes
      the dataset but returns a failure. (SLU - 2010/09/08) 
    - H5Eset_current_stack now also closes the error stack set as the 
      default. This is to avoid a potential problem. 
      (SLU - 2010/09/07 - Bug 1799)
    - Corrected situation where 1-D chunked dataset could get created by an
      application without calling H5Pset_chunk().  H5Pset_chunk is now
      required for creating all chunked datasets.  (QAK - 2010/09/02)
    - Fixed many memory issues that valgrind exposed.  (QAK - 2010/08/24)
    - Fixed the bug in the filter's public CAN_APPLY function.  The return
      value should be htri_t not herr_t. (SLU - 2010/08/05 - Bug 1239)
    - Fixed the STDIO VFD to use fseeko64 instead of fseek64 for 64-bit I/O 
      support. (AKC - 2010/7/30)
    - Fixed a bug in the direct I/O driver that could render files with certain
      kinds of unaligned data unreadable or corrupt them. (NAF - 2010/07/28)
    - valgrind reported an error of copying data to itself when a new attribute 
      is written.  Fixed by taking out the memcpy step in the attribute code. 
      (SLU - 2010/07/28 - Bug 1956)
    - Corrected various issues in the MPI datatype creation code which could
      cause resource leaks or incorrect behavior (and may improve the
      performance as well).  (QAK - 2010/07/19)
    - Fixed a bug that could cause file corruption when using non-default sizes
      of addresses and/or lengths.  This bug could also cause uncorrupted files
      with this property to be unreadable.  This bug was introduced in 1.8.5.
      (NAF - 2010/07/16 - Bug 1951)

    Parallel Library
    ----------------
    - None

    Tools
    -----
    - Fixed h5diff to compare member objects and groups recursively when 
      two files or groups are compared. (JKM - 2010/9/16 - Bug 1975)
    - Fixed h5repack to be able to convert a dataset to COMPACT layout.
      (JKM - 2010/09/15 - Bug 1896)
    - Changed h5ls to not interpret special characters in object or attribute
      names for output. (JKM - 2010/06/28 - Bug 1784)
    - Revised the order of arguments for h5cc, h5fc, h5c++, h5pcc and h5pfc. 
      CPPFLAGS, CFLAGS, LDFLAGS, and LIBS have been duplicated with an H5BLD_ 
      prefix to put the flags and paths from the hdf5 build in the correct 
      places and allow the script user to add entries in CPPFLAGS, CFLAGS, 
      LDFLAGS, and LIBS that will take precedence over those from the hdf5 
      build. The user can make these entries persistent by editing 
      CFLAGSBASE, CPPFLAGSBASE, LDFLAGSBASE, and LIBSBASE near the top of 
      the script or temporary by setting HDF5_CFLAGS, HDF5_CPPFLAGS, 
      HDF5_LDFLAGS, or HDF5_LIBS in the environment. The new order of 
      arguments in these scripts is $CLINKER $H5BLD_CPPFLAGS $CPPFLAGS 
      $H5BLD_CFLAGS $CFLAGS $LDFLAGS $clibpath $link_objs $LIBS $link_args 
      $shared_link. (LRK - 2010/10/25 - Bug 1973)

    F90 API
    ------
    - None

    C++ API
    ------
    - None

    High-Level APIs:
    ------
    - None

    Fortran High-Level APIs:
    ------
    - None


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 6.1                       xlc 11.1.0.3
    (NCSA BP)                     xlC 11.1.0.3
                                  xlf 13.1.0.3
                                  mpcc_r 11.1.0.3
                                  mpxlf_r 13.1.0.3

    FreeBSD 6.3-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.4.5 20100803
                                  g++ 4.4.5 20100803
                                  gfortran 4.4.5 20100803

    FreeBSD 6.3-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.4.5 20100803
                                  g++ 4.4.5 20100803
                                  gfortran 4.4.5 20100803

    Linux 2.6.18-194.3.1.el5PAE   gcc (GCC) 4.1.2 and 4.4.2
    #1 SMP i686 i686 i386         G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010)
    (jam)                         GNU Fortran (GCC) 4.1.2 20080704 
                                      (Red Hat 4.1.2-48) and 4.4.2
                                  PGI C, Fortran, C++ 10.4-0 32-bit
                                  PGI C, Fortran, C++ 10.6-0 32-bit
                                  Intel(R) C Compiler for 32-bit
                                      applications, Version 11.1 
                                  Intel(R) C++ Compiler for 32-bit
                                      applications, Version 11.1
                                  Intel(R) Fortran Compiler for 32-bit
                                      applications, Version 11.1
                                  Absoft 32-bit Fortran 95 10.0.7
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    Linux 2.6.18-194.17.1.el5     gcc 4.1.2 and 4.4.2
    #1 SMP x86_64 GNU/Linux       G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010)
    (amani)                           tested for both 32- and 64-bit binaries
                                  GNU Fortran (GCC) 4.1.2 20080704
                                      (Red Hat 4.1.2-46) and 4.4.2
                                  Intel(R) C, C++, Fortran Compilers for 
                                      applications running on Intel(R) 64, 
                                      Version 11.1.
                                  PGI C, Fortran, C++ Version 9.0-4
                                      for 64-bit target on x86-64
                                  MPICH mpich2-1.3.1 compiled with
                                      gcc 4.1.2 and gfortran 4.1.2

    SGI ProPack 7 Linux           Intel(R) C++ Version 11.1 20100806
    2.6.32.19-0.3.1.1982.0.PTF-   Intel(R) Fortran Version 11.1 20100806
    default #1 SMP                SGI MPT 2.01
    SGI Altix UV
    (NCSA ember)

    SunOS 5.10 32- and 64-bit     Sun C 5.9 Sun OS_sparc Patch 124867-16
    (linew)                       Sun Fortran 95 8.3 Sun OS_sparc Patch 127000-13
                                  Sun C++ 5.9 Sun OS_sparc Patch 124863-62
                                  Sun C 5.10 SunOS_sparc Patch 141861-07
                                  Sun Fortran 95 8.4 SunOS_sparc Patch 128231-06
                                  Sun C++ 5.10 SunOS_sparc 128228-11

    Intel Xeon Linux 2.6.18-      gcc 4.2.4
    92.1.10.el5_lustre.1.6.6smp-  Intel(R) C++ Version 10.1.017
    perfctr #8 SMP                Intel(R) Fortran Compiler Version 10.1.017
    (NCSA abe)                    Open MPI 1.3.2
                                  MVAPICH2-1.5.1_pgi-10.8

    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 (cmake)
                                  Cygwin(1.7.7 native gcc(4.3.4) compiler and gfortran)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)
                                  Visual Studio 2010 (cmake)
                                  Cygwin(1.7.7 native gcc(4.3.4) compiler and gfortran)

    Windows Vista                 Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows Vista x64             Visual Studio 2008 w/ Intel Fortran 10.1 (project files)
                                  Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows 7                     Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Windows 7 x64                 Visual Studio 2008 w/ Intel Fortran 11.1 (cmake)

    Mac OS X 10.6.3 (Intel 64-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1
    Darwin Kernel Version 10.3.1  GNU Fortran (GCC) 4.5.0 20090910  
                                  Intel C, C++ and Fortran compilers 11.1 20100806

    Mac OS X 10.6.4 (Intel 32-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1
    Darwin Kernel Version 10.4.0  GNU Fortran (GCC) 4.6.0 20101106
                                  Intel C, C++ and Fortran compilers 12.0.0 20101110

    Mac OS X 10.6.4 (Intel 64-bit) i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 (Apple Inc. build 5659)
    Darwin Kernel Version 10.6.0   GNU Fortran (GCC) 4.5.0 20090910 
                                   Intel C, C++ and Fortran compilers 11.1 20100806

    Fedora 12 2.6.32.16-150.fc12.ppc64 #1 SMP ppc64 GNU/Linux
                                  gcc (GCC) 4.4.4 20100630 (Red Hat 4.4.4-10)
                                  GNU Fortran (GCC) 4.4.4 20100630 (Red Hat 4.4.4-10)

    Debian5.06 2.6.26-2-686 #1 SMP i686 GNU/Linux
                                  gcc (Debian 4.3.2-1.1) 4.3.2
                                  GNU Fortran (Debian 4.3.2-1.1) 4.3.2

    Debian5.06 2.6.26-2-amd64 #1 SMP x86_64 GNU/Linux
                                  gcc (Debian 4.3.2-1.1) 4.3.2
                                  GNU Fortran (Debian 4.3.2-1.1) 4.3.2

    Fedora14 2.6.35.6-48.fc14.i686.PAE #1 SMP i686 i686 i386 GNU/Linux
                                  gcc (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)
                                  GNU Fortran (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)

    Fedora14 2.6.35.6-48.fc14.x86_64 #1 SMP x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)
                                  GNU Fortran (GCC) 4.5.1 20100924 (Red Hat 4.5.1-4)

    SUSE 11.3 2.6.34.7-0.7-desktop #1 SMP PREEMPT i686 i686 i386 GNU/Linux
                                  gcc (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]
                                  GNU Fortran (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]

    SUSE 11.3 2.6.34.7-0.7-desktop #1 SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux
                                  gcc (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]
                                  GNU Fortran (SUSE Linux) 4.5.0 20100604 [gcc-4_5-branch revision 160292]

    Ubuntu 10.10 2.6.35-25-generic #44-Ubuntu SMP i686 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
                                  GNU Fortran (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5

    Ubuntu 10.10 2.6.35-25-generic #44-Ubuntu SMP x86_64 GNU/Linux
                                  gcc (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
                                  GNU Fortran (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
    
    OpenVMS Alpha 8.3             HP C V7.3-009
                                  HP Fortran V8.2-104679-48H9K
                                  HP C++ V7.3-009

Tested Configuration Features Summary
========================================

    In the tables below
          y   = tested 
          n   = not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                                 C        F90    F90      C++   zlib  SZIP
                                         parallel        parallel
Solaris2.10 32-bit                         n        y      n        y     y     y
Solaris2.10 64-bit                         n        y      n        y     y     y
Windows XP                                 n        y(4)   n        y     y     y
Windows XP x64                             n        y(4)   n        y     y     y
Windows Vista                              n        y(4)   n        y     y     y
Windows Vista x64                          n        y(4)   n        y     y     y
OpenVMS Alpha                              n        y      n        y     y     n
Mac OS X 10.6 Intel                        n        y      n        y     y     y
AIX 6.1 32- and 64-bit                     y        y      y        y     y     y
FreeBSD 6.3-STABLE 32&64 bit               n        y      n        y     y     y
CentOS 5.5 Linux 2.6.18-194 i686 GNU (1)W  y        y(2)   y        y     y     y
CentOS 5.5 Linux 2.6.18-194 i686 Intel  W  n        y      n        y     y     n
CentOS 5.5 Linux 2.6.18-194 i686 PGI    W  n        y      n        y     y     n
CentOS 5.5 Linux 2.6.16 x86_64 GNU (1)  W  y        y(3)   y        y     y     y
CentOS 5.5 Linux 2.6.16 x86_64 Intel    W  n        y      n        y     y     n
CentOS 5.5 Linux 2.6.16 x86_64 PGI      W  n        y      n        y     y     y
RedHat EL4 2.6.18 Xeon Lustre           C  y        y      y        y     y     n
Fedora 12 Linux 2.6.32.16-150.fc12.ppc64   n        y      n        y     y     y
SGI Linux 2.6.32.19                        y        y      y        y     y     y


Platform                                 Shared  Shared    Shared    Thread-  
                                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                         y       y         y         y        
Solaris2.10 64-bit                         y       y         y         y        
Windows XP                                 y       y(4)      y         n        
Windows XP x64                             y       y(4)      y         n        
Windows Vista                              y       y(4)      y         y
Windows Vista x64                          y       y(4)      y         y
OpenVMS Alpha                              n       n         n         n
Mac OS X 10.6                              y(5)    n         y         n        
AIX 6.1 32- and 64-bit                     n       n         n         y        
FreeBSD 6.3-STABLE 32&64 bit               y       n         y         y        
CentOS 5.5 Linux 2.6.18-128 i686 GNU (1)W  y       y(2)      y         y        
CentOS 5.5 Linux 2.6.18-128 i686 Intel  W  y       y         y         n        
CentOS 5.5 Linux 2.6.18-128 i686 PGI    W  y       y         y         n        
CentOS 5.5 Linux 2.6.16 x86_64 GNU (1)  W  y       y         y         y        
CentOS 5.5 Linux 2.6.16 x86_64 Intel    W  y       y         y         n        
CentOS 5.5 Linux 2.6.16 x86_64 PGI      W  y       y         y         n        
RedHat EL4 2.6.18 Xeon Lustre           C  y       y         y         n
Fedora 12 Linux 2.6.32.16-150.fc12.ppc64   y       y         y         y 
SGI Linux 2.6.32.19                        y       y         y         y 

           (1) Fortran compiled with gfortran.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2008 w/ Intel Fortran 10.1 (Cygwin shared libraries are not supported)
           (5) C and C++ shared libraries will not be built when Fortran is enabled.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* examples/run-all-ex.sh does not work on Cygwin. (NAF - 2011/02/11)

* Parallel test, t_shapesame in testpar, is rather unstable as it continues to
  have occasional errors in AIX and quite often in NCSA Abe. It is being built
  but it is not run automatically in the "make check" command. One would have to
  run it by hand to see if it works in a particular machine. AKC - 2011/01/28

* Although OpenVMS Alpha is supported, there are several problems with the C
  test suite - getname.c, lheap.c, lheap.c, mtime.c, and stab.c.  The test
  suite for h5diff also fails.  These failures are from the tests, not the
  library.  We have fixed these failures.  But it's too late to put the fixes
  into this release.  If you install the 1.8.6 library, it should still work
  despite of these test failures.  If you want the working copy without any
  test failure, you can request it from us.  SLU - 2011/01/26 

* If parallel gmake (e.g., gmake -j 4) is used, the "gmake clean" command
  sometimes fails in the perform directory due to the attempt to remove the
  executable of h5perf or h5perf_serial by two "parallel" commands. This error
  has no consequence on the functionality of the HDF5 library or install. It
  is fixed in the next release. AKC - 2011/01/25

* While working on the 1.8.6 release of HDF5, a bug was discovered that can
  occur when reading from a dataset in parallel shortly after it has been
  written to collectively. The issue was exposed by a new test in the parallel
  HDF5 test suite, but had existed before that. We believe the problem lies with
  certain MPI implementations and/or filesystems.

  We have provided a pure MPI test program, as well as a standalone HDF5
  program, that can be used to determine if this is an issue on your system.
  They should be run across multiple nodes with a varying number of processes.
  These programs can be found at:
  http://www.hdfgroup.org/ftp/HDF5/examples/known_problems/

* The h5diff tool can display garbage values when variable-length strings in 
  a compound type dataset are compared. This also occurs with variable-length 
  string arrays in a compound type dataset. See bug #1989. This will be fixed 
  in the next release. JKM - 2010/11/05

* The AIX --enable-shared setting does not quite work. It can produce a shared 
  library, but there cannot be more than one shared library that is 
  interlinked. This means that the high level APIs will not work which is not 
  very useful. We hope to have a solution in the next release. 
  (AKC - 2010/10/15)
  
* H5Eset_auto can cause a seg fault for a library API call if the application
  compiles with -DH5_USE_16_API (see bug 1707).  It will be fixed in the 
  next release. SLU - 2010/10/5
  
* The library's test dt_arith.c showed a compiler's rounding problem on 
  Cygwin when converting an unsigned long long to a long double.  The 
  library's own conversion works fine.  We defined a macro for Cygwin to 
  skip this test until we can solve the problem.  Please see bug #1813. 
  SLU - 2010/5/5
  
* All the VFL drivers aren't backwardly compatible.  In H5FDpublic.h, the 
  structure H5FD_class_t changed in 1.8.  A new parameter was added to the 
  get_eoa and set_eoa callback functions, and a new callback function 
  get_type_map was added. The public function H5FDrealloc was taken out in 
  1.8.  The problem only happens when users define their own driver for 1.6 
  and try to plug in a 1.8 library. This will be fixed in 1.10. SLU - 2010/2/2

* MinGW has a missing libstdc++.dll.a library file and will not successfully link
  C++ applications/tests. Do not use the enable-cxx configure option. Read all of
  the INSTALL_MINGW.txt file for all restrictions. ADB - 2009/11/11
  
* The PathScale MPI implementation, accessing a Panasas file system, would 
  cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file does not 
  exist. This is due to the MPI_File_open() call failing if the amode has 
  the MPI_MODE_EXCL bit set. (See bug 1468 for details.) AKC - 2009/8/11

* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO. CMC - 2009/04/28

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and 
  tools/h5copy/testh5copy.sh will fail some of their sub-tests. These 
  sub-tests are expected to fail and should exit with a non-zero code but 
  the yod command does not propagate the exit code of the executables. Yod 
  always returns 0 if it can launch the executable.  The test suite shell 
  expects a non-zero for this particular test. Therefore, it concludes the 
  test has failed when it receives 0 from yod.  To skip all the "failing" 
  tests for now, change them as shown below.
  
  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  AKC - 2008/11/10

* For Red Storm, a Cray XT3 system, the yod command sometimes gives the 
  message  "yod allocation delayed for node recovery."  This interferes 
  with test suites that do not expect to see this message.  See the "Red Storm" 
  section in file INSTALL_parallel for a way to deal with this problem. 
  AKC - 2008/05/28
  
* On an Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use the -mp -O1 compilation flags to build the libraries. A higher level 
  of optimization causes failures in several HDF5 library tests.
  
* On mpich 1.2.5 and 1.2.6 on a system using four processors, if more than 
  two processes contribute no I/O and the application asks to do collective 
  I/O, we have found that a simple collective write will sometimes hang. This 
  can be verified with the t_mpi test under testpar.
  
* A dataset created or rewritten with a v1.6.3 or later library cannot be 
  read with the v1.6.2 or earlier library when the Fletcher32 EDC filter 
  is enabled. There was a bug in the calculation of the Fletcher32 checksum 
  in the library before v1.6.3; the checksum value was not consistent 
  between big-endian and little-endian systems.  This bug was fixed in 
  Release 1.6.3. However, after fixing the bug, the checksum value was no 
  longer the same as before on little-endian system.  Library releases after 
  1.6.4 can still read datasets created or rewritten with an HDF5 library of 
  v1.6.2 or earlier. SLU - 2005/6/30
  
* On IBM AIX systems, parallel HDF5 mode will fail some tests with error 
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'. To 
  work around this, set the environment variable MP_INFOLEVEL to 0 to 
  minimize the messages and run the tests again. The tests may fail with 
  messages like "The socket name is already in use", but HDF5 does not use 
  sockets. This failure is due to problems with the poe command trying to 
  set up the debug socket.  To resolve this problem, check to see whether 
  there are any old /tmp/s.pedb.* files around. These are sockets used by 
  the poe command and left behind if the command failed at some point. To 
  resolve this, ask your system administrator to remove the 
  old/tmp/s.pedb.* files, and then ask IBM to provide a means to run poe 
  without the debug socket.

* The --enable-static-exec configure flag will only statically link 
  libraries if the static version of that library is present. If only the 
  shared version of a library exists (i.e., most system libraries on 
  Solaris, AIX, and Mac, for example, only have shared versions), the flag 
  should still result in a successful compilation, but note that the 
  installed executables will not be fully static. Thus, the only guarantee 
  on these systems is that the executable is statically linked with just 
  the HDF5 library.
  
* On an SGI Altix SMP ia64 system, the Intel compiler version 10.1 (which 
  is the default on that system) does not work properly and results in 
  failures during the make check (in a static build) and the make 
  installcheck (in a shared build). This appears to be a compiler 
  optimization problem. Reducing the optimization by setting CFLAGS to 
  -O1 or below resolves the issue. Using a newer version of the compiler 
  (11.0) avoids the issue. MAM - 2010/06/01
  
* On solaris systems, when running the examples with the scripts installed in
  .../share/hdf5_examples, two of the c tests, h5_extlink and h5_elink_unix2win 
  may fail or generate HDF5 errors because the script commands in c/run-c-ex.sh 
  fail to create test directories red, blue, and u2w.  Moving the '!' in lines 
  67, 70, 73 of run-c-ex.sh will fix the problem.  For example the script command 
  "if ! test -d red; then" will work on solaris if changed to 
  "if test ! -d red; then".


%%%%1.8.5%%%%   


HDF5 version 1.8.5 released on Fri Jun  4 13:27:31 CDT 2010
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.4 and HDF5 1.8.5, and
contains information on the platforms tested and known problems in HDF5-1.8.5. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt and HISTORY-1_8.txt 
in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.5 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.5 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.5 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.5 (current 
release) versus Release 1.8.4":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.4
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - CMake Early Access: This release adds support for building HDF5 using
      the CMake system. Initial work has targeted Windows, but other platforms
      can be used. See the CMake.TXT file for more information. Version
      2.8.1 of CMake is required.
    - Configure now adds appropriate defines for supporting large (64-bit)
      files on all systems, where supported, by default, instead of only Linux.
      This large file support is controllable with the --enable-largefile 
      configure option. The Linux-specific --enable-linux-lfs option has been 
      deprecated in favor of this new option. Please note that specifying
      --disable-large does NOT attempt to "turn off" largefile support if it
      is natively supported by the compiler, but rather just disables 
      configure from actively trying to add any additional compiler flags.
      (MAM - 2010/05/05 - Bug # 1772/1434)
    - Fixed an signal handling mask error in H5detect that might result in
      SIGBUS or SIGSEGV failures in some platforms such as Linux on Sparc.
      (AKC - 2010/4/28 - Bug # 1764)
    - Fixed various "strict aliasing" problems, allowing higher levels
      of compiler optimization (in particular, allowing '-O3' to work
      with recent versions of GCC).  (QAK - 2010/04/26)
    - Upgraded versions of autotools used to generate configuration suite.
      We now use Automake 1.11.1, Autoconf 2.65, and Libtool 2.2.6b. 
      (MAM - 2010/04/15)
    - Added the xlc-* and mpcc_r-* BASENAME patterns to be recognized as IBM
      compilers so that the IBM compiler options can be added properly.  This
      allows non-system-default compiler command names (e.g. xlc-m.n.k.l) be
      recognized. (AKC - 2009/11/26)

    Library
    -------
    - Performance is substantially improved when extending a dataset with early 
      allocation. (NAF - 2010/03/24 - Bug # 1637)
    - Added support for filtering densely stored groups.  Many of the API
      functions related to filters have been extended to support dense groups
      as well as datasets.  Pipeline messages can now be stored in a group's
      object header. (NAF/QAK - 2009/11/3)

    Parallel Library
    ----------------
    - None
 
    Tools
    -----
    - h5dump: Added the new packed bits feature which prints packed bits stored
      in an integer dataset. (AKC/ADB - 2010/5/7) 
    - h5diff: Fixed incorrect behavior (hang) in parallel mode when specifying 
      invalid options (ex: -v and -q). (JKM - 2010/02/17)
    - h5diff: Added new flag --no-dangling-links (see --help for details).
      (JKM - 2010/02/10) 
    - h5diff: Added new flag --follow-symlinks (see --help for details).
      (JKM - 2010/01/25)
    - h5diff: Added a fix to correct the display of garbage values when 
      displaying big-endian data on a little-endian machine. (JKM - 2009/11/20)

    High-Level APIs
    ---------------
    - None

    F90 API
    -------
    - None

    C++ API
    -------
    - New member functions
        + Overloaded CommonFG::getObjnameByIdx to take char* for name.
        + Overloaded CommonFG::getObjTypeByIdx to return type name as a char*.
          (BMR - 2010/05/10)
        + Added DataSet::getInMemDataSize() to simplify getting the dataset's
          data size in memory.  (BMR - 2009/07/26)


Support for New Platforms, Languages, and Compilers
===================================================
    - AIX 6.1 has been added. (AKC - 2010/1/4)


Bug Fixes since HDF5-1.8.4
==========================

    Configuration
    -------------
    - Fixed various "strict aliasing" problems, allowing higher levels
      of compiler optimization (in particular, allowing '-O3' to work
      with recent versions of GCC).  (QAK - 2010/04/26)

    Library
    -------
    - Fixed a file corruption bug that could happen when shrinking a compressed
      dataset. (NAF - 2010/05/20)
    - Fixed some memory leaks in VL datatype conversion when strings are
      used as fill values. (MAM - 2010/05/12 - Bug # 1826)
    - Fixed an H5Rcreate failure when passing in a -1 for the dataspace 
      identifier. (ADB - 2010/4/28)
    - Fixed a bug when copying objects with NULL references with the
      H5O_COPY_EXPAND_REFERENCE_FLAG flag set. (NAF - 2010/04/08 - Bug # 1815)
    - Added a mechanism to the H5I interface to save returned object identifier 
      structures for immediate re-use if needed. This addresses a potential 
      performance issue by delaying the case when the next identifier to be
      registered has grown so large that it wraps around and needs to be
      checked to see whether it is available for distribution.
      (MAM - 2010/03/15 - Bug # 1730)
    - Files can now be concurrently opened more than once using the core file
      driver, as long as the backing store is used. (NAF - 2010/03/09)
    - Added support for H5O_COPY_EXPAND_EXT_LINK_FLAG to H5Ocopy.  External
      links will now be expanded if this flag is set.
      (NAF - 2010/03/05 - Bug # 1733)
    - Fixed a bug where the library, when traversing an external link, would
      reopen the source file if nothing else worked. (NAF - 2010/03/05)
    - Fixed a bug where fractal heap identifiers for attributes and shared 
      object header messages could be incorrectly encoded in the file for 
      files created on big-endian platforms.  
      Please see http://www.hdfgroup.org/HDF5/release/known_problems if you 
      suspect you have a file with this problem.  
      (QAK - 2010/02/23 - Bug # 1755)
    - Fixed an intermittent bug in the b-tree code which could be triggered
      by expanding and shrinking chunked datasets in certain ways.
      (NAF - 2010/02/16)
    - H5Tdetect_class said a VL string is a string type.  But when it's in
      a compound type, it said it's a VL type.  THis has been fixed to be 
      consistent; it now always returns a string type. 
      (SLU - 2009/12/10 - Bug # 1584)
    - Allow "child" files from external links to be correctly located when
      relative to a "parent" file that is opened through a symbolic link.
      (QAK - 2009/12/01)

    Parallel Library
    ----------------
    - Parallel mode in AIX will fail some of the testcheck_version.sh tests
      where it treats "exit(134) the same as if process 0 had received an abort
      signal.  Fixed.  (AKC - 2009/11/3)

    Tools
    -----
    - Fixed h5ls to return exit code 1 (error) when a non-existent file is
      specified. (JKM - 2010/04/27 - Bug # 1793)
    - Fixed h5copy failure when copying a dangling link that is specified 
      directly. (JKM - 2010/04/22 - Bug # 1817)
    - Fixed an h5repack failure that lost attributes from a dataset of 
      reference type. (JKM - 2010/3/25 - Bug # 1726)
    - Fixed h5repack error that set NULL for object reference values for
      datasets, groups, or named datatypes. (JKM - 2010/03/19 - Bug # 1814)

    F90 API
    ------
    - None 

    C++ API
    ------
    - The constructor PropList::PropList(id) was fixed to act properly
      according to the nature of 'id'.  When 'id' is a property class 
      identifier, a new property list will be created.  When 'id' is a 
      property list identifier, a copy of the property list will be made. 
      (BMR - 2010/5/9)
    - The parameters 'size' and 'bufsize' in CommonFG::getLinkval and
      CommonFG::getComment, respectively, now have default values for the
      user's convenience.  (BMR - 2009/10/23)
    - NULL pointer accessing was fixed.  (BMR - 2009/10/05 - Bug # 1061)
    - Read/write methods of DataSet and Attribute classes were fixed
      to handle string correctly.  (BMR - 2009/07/26)

    High-Level APIs:
    ------
    - Fixed a bug in H5DSattach_scale, H5DSis_attached, and H5DSdetach_scale
      caused by using the H5Tget_native_type function to determine the native
      type for reading the REFERENCE_LIST attribute. This bug was exposed
      on Mac PPC.  (EIP - 2010/05/22 - Bug # 1851) 
    - Fixed a bug in the H5DSdetach_scale function when 0 bytes were   
      allocated after the last reference to a dimension scale was removed         
      from the list of references in a VL element of the DIMENSION_LIST 
      attribute.  Modified the function to comply with the specification: 
      the DIMENSION_LIST attribute is now deleted when no dimension scales 
      are left attached.  (EIP - 2010/05/14 - Bug # 1822)

    Fortran High-Level APIs:
    ------
    - None 


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 5.3                       xlc 7.0.0.9, 8.0.0.20, 9.0.0.4
    (LLNL Up)                     xlC 7.0.0.9, 8.0.0.20, 9.0.0.4
                                  xlf 9.1.0.9, 10.1.0.9, 11.1.0.7
                                  mpcc_r 7.0.0.9
                                  mpxlf_r 09.01.0000.0008

    AIX 6.1                       xlc 10.1.0.6
    (NCSA BP)                     xlC 10.1.0.6
                                  xlf 12.1.0.7

    Cray XT3 (2.1.56)             cc (pgcc) 10.0-0
    (SNL red storm)               ftn (pgf90) 10.0-0
                                  CC (pgCC) 10.0-0

    FreeBSD 6.3-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.3.4 20090419
                                  g++ 4.3.4 20090419
                                  gfortran 4.3.4 20090419

    FreeBSD 6.3-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.4.1 20090421
                                  g++ 4.4.1 20090421
                                  gfortran 4.4.1 20090421

    Linux 2.6.18-128.1.6.el5xen   gcc (GCC) 4.1.2 20080704 and 4.4.2
    #1 SMP i686 i686 i386         GNU Fortran (GCC) 4.1.2 20080704 and 4.4.2
    (jam)                         g++ (GCC) 4.1.2 20080704 and 4.4.2
                                  G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010)
                                  Absoft 32-bit Fortran 95 10.0.7
                                  PGI C, Fortran, C++ 10.4-0 32-bit
                                  Intel(R) C, C++, Fortran Compilers for 32-bit
                                     applications, Version 11.1 Build 20090827
                                  MPICH mpich2-1.0.8 compiled with
                                     gcc 4.1.2 and GNU Fortran (GCC) 4.1.2

    Linux 2.6.18-164.el5 #1 SMP   gcc 4.1.2 20080704 and gcc 4.4.2 
    x86_64 GNU/Linux              GNU Fortran (GCC) 4.1.2 20080704 and 4.4.2
    (amani)                       g++ (GCC) 4.1.2 20080704 and 4.4.2 
                                  G95 (GCC 4.0.3 (g95 0.93!) Apr 21 2010)
                                  Intel(R) C, C++, Fortran Compilers for 
                                     applications running on Intel(R) 64, 
                                     Version 11.1 Build 20090827.
                                  PGI C, Fortran, C++ Version 10.4-0
                                         for 32 & 64-bit target on x86-64
                                  MPICH mpich2-1.0.8 compiled with
                                     gcc 4.1.2 and GNU Fortran (GCC) 4.1.2

    Linux 2.6.16.54-0.2.5 #1      Intel(R) C++ Version 11.0.074
    SGI Altix SMP ia64            Intel(R) Fortran Itanium(R) Version 11.0.074
    (cobalt)                      SGI MPI 1.38

    SunOS 5.10 32- and 64-bit     Sun C 5.9 SunOS_sparc Patch 124867-14
    (linew)                       Sun Fortran 95 8.3 SunOS_sparc 
                                     Patch 127000-13 
                                  Sun C++ 5.9 SunOS_sparc Patch 124863-23
                                  
    Intel Xeon Linux 2.6.18-      Intel(R) C++ Version 10.0.026
    92.1.10.el5_lustre.1.6.6smp-  Intel(R) Fortran Compiler Version 10.0.026
    perfctr #7 SMP                Open MPI 1.2.2
    (abe)                         MVAPICH2-0.9.8p28p2patched-intel-ofed-1.2
                                  compiled with icc v10.0.026 and ifort 10.0.026
                                  
    Linux 2.6.18-76chaos #1 SMP   Intel(R) C, C++, Fortran Compilers for 
    SMP x86_64 GNU/Linux          applications running on Intel(R) 64, 
    (SNL Glory)                   Versions 11.1.
    
    Windows XP                    Visual Studio 2008 w/ Intel Fortran 10.1
                                  Cygwin(1.7.5 native gcc(4.3.4) compiler and 
                                  gfortran)

    Windows XP x64                Visual Studio 2008 w/ Intel Fortran 10.1

    Windows Vista                 Visual Studio 2008 w/ Intel Fortran 10.1

    Windows Vista x64             Visual Studio 2008 w/ Intel Fortran 10.1

    MAC OS  10.6.3 (Intel)        i686-apple-darwin10-gcc-4.2.1 (GCC) 4.2.1 
    (pahra)                       GNU Fortran (GCC) 4.5.0 20090910
                                  i686-apple-darwin10-g++-4.2.1 (GCC) 4.2.1 
                                  Intel C, C++ and Fortran compilers 11.1
    
    MAC OS  10.5.8 (Intel)        i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1
    (tejeda)

    MAC OS  10.5 (PPC)            powerpc-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1
    (juniper-w)

    OpenVMS Alpha V8.3            HP C V7.3-009
                                  HP C++ V7.3-009
                                  HP Fortran V8.0-1-104669-48GBT      

Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                           C        F90    F90      C++   zlib  SZIP
                                   parallel        parallel
Solaris2.10 32-bit                   n        y      n        y     y     y
Solaris2.10 64-bit                   n        y      n        y     y     y
Windows XP                           n        y(4)   n(4)     y     y     y
Windows XP x64                       n        y(4)   n(4)     y     y     y
Windows Vista                        n        y(4)   n(4)     y     y     y
Windows Vista x64                    n        y(4)   n(4)     y     y     y
Mac OS X 10.5 PPC                    n        n      n        n     y     n 
Mac OS X 10.5 Intel                  n        y      n        y     y     y
Mac OS X 10.6 Intel                  n        y      n        y     y     y
AIX 5.3 32- and 64-bit               n        y      n        y     y     n
AIX 6.1 32- and 64-bit               n        y      n        y     y     n
FreeBSD 6.3-STABLE 32&64 bit         n        y      n        y     y     y
RedHat EL4 2.6.9-42 i686 GNU (1)  W  y        y      y        y     y     y
RedHat EL5 2.6.18-128 i686 GNU (1)W  y        y(2)   y        y     y     y
RedHat EL5 2.6.18-128 i686 Intel  W  n        y      n        y     y     n
RedHat EL5 2.6.18-128 i686 PGI    W  n        y      n        y     y     n
SuSe Linux 2.6.16 x86_64 GNU (1)  W  y        y(3)   y        y     y     y
SuSe Linux 2.6.16 x86_64 Intel    W  n        y      n        y     y     n
SuSe Linux 2.6.16 x86_64 PGI      W  n        y      n        y     y     y
SuSe Linux 2.6.16 SGI Altix ia64  C  y        y      y        y     y     y
RedHat EL4 2.6.18 Xeon Lustre     C  y        y      y        y     y     n
Cray XT3 2.1.56                      y        y      y        y     y     n
OpenVMS Alpha V8.3                   n        y      n        y     y     n

Platform                           Shared  Shared    Shared    Thread-  
                                   C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                   y       y         y         y        
Solaris2.10 64-bit                   y       y         y         y        
Windows XP                           y       y(4)      y         n        
Windows XP x64                       y       y(4)      y         n        
Windows Vista                        y       y(4)      y         n        
Windows Vista x64                    y       y(4)      y         n        
Mac OS X 10.5 PPC                    y       n         n         n        
Mac OS X 10.5 (Intel)                y(5)    n         y         n        
Mac OS X 10.6 (Intel)                y(5)    n         y         n        
AIX 5.3 32- and 64-bit               n       n         n         n        
AIX 6.1 32- and 64-bit               n       n         n         n        
FreeBSD 6.3-STABLE 32&64 bit         y       n         y         y        
RedHat EL4 2.6.9-42 i686 GNU (1)  W  y       y         y         y        
RedHat EL5 2.6.18-128 i686 GNU (1)W  y       y(2)      y         y        
RedHat EL5  2.6.18-128 i686 Intel W  y       y         y         n        
RedHat EL5 2.6.18-128 i686 PGI    W  y       y         y         n        
SuSe Linux 2.6.16 x86_64 GNU (1)  W  y       y         y         y        
SuSe Linux 2.6.16 x86_64 Intel    W  y       y         y         n        
SuSe Linux 2.6.16 x86_64 PGI      W  y       y         y         n        
SuSe Linux 2.6.16 SGI Altix ia64  C  y                           n 
RedHat EL4 2.6.18 Xeon Lustre     C  y       y         y         n
Cray XT3 2.1.56                      n       n         n         n
OpenVMS Alpha V8.3                   n       n         n         n

           (1) Fortran compiled with g95.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2008. (Cygwin shared libraries are not 
               supported.)
           (5) Shared C and C++ are disabled when Fortran is configured in.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* The library's test dt_arith.c exposed a compiler's rounding problem on
  Cygwin when converting from unsigned long long to long double.  The 
  library's own conversion works correctly.  A macro is defined for Cygwin 
  to skip this test until we can solve the problem.  (Please see bug #1813.)
  SLU - 2010/5/5 

* All the VFL drivers aren't backward compatible.  In H5FDpublic.h, the
  structure H5FD_class_t changed in 1.8.  There is a new parameter added to
  get_eoa and set_eoa callback functions.  A new callback function
  get_type_map was added.  The public function H5FDrealloc was taken
  out in 1.8.  The problem only happens when users define their own driver
  for 1.6 and try to plug it into a 1.8 library.  This affects a very small
  number of users.  (See bug report #1279.)  SLU - 2010/2/2

* MinGW has a missing libstdc++.dll.a library file and will not successfully 
  link C++ applications/tests. Do not use the enable-cxx configure option. 
  Read all of the INSTALL_MINGW.txt file for all restrictions. 
  ADB - 2009/11/11
  
* Some tests in tools/h5repack may fail in AIX systems when -q32 mode is used.
  The error is due to insufficient memory requested. Request a large amount
  of runtime memory by setting the following environment variable for more
  memory.
     LDR_CNTRL=MAXDATA=0x20000000@DSA
  AKC - 2009/10/31

* The PathScale MPI implementation, accessing a Panasas file system, would
  cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file is not
  existing. This is due to the MPI_File_open() call failing if the amode has
  the MPI_MODE_EXCL bit set. (See bug 1468 for details.) AKC - 2009/8/11
 
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO. CMC - 2009/04/28

* For gcc v4.3 and v4.4, with production mode, if -O3 is used, H5Tinit.c
  would fail to compile. Actually bad H5Tinit.c is produced.  If -O (same
  as -O1) is used, H5Tinit.c compiled okay but test/dt_arith would fail.
  When -O0 (no optimizatio) is used, H5Tinit.c compilete okay and all
  tests passed. Therefore, -O0 is imposed for v4.3 and v4.4 of gcc.
  AKC - 2009/04/20

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  AKC - 2008/11/10

* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect seeing this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  AKC - 2008/05/28

* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use,"  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac,
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.

* There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

* On FREE-BSD systems when shared libraries are disabled, make install fails
  in install-examples with the error '"Makefile", line 635: Need an operator'.
  When this error occurs removing or commenting out the line "export
  LD_LIBRARY_PATH=$(LL_PATH)" (line 635 in examples/Makefile) will allow make
  install to finish installing examples.  The problem will be fixed in the
  next release. LRK - 2010/05/26

* On cobalt, an SGI Altix SMP ia64 system, Intel compiler version 10.1 (which
  is the default on that system) does not work properly and results in
  failures during make check (in a static build) and make installcheck (during
  a shared build). This appears to be a compiler optimization problem.
  Reducing optimization by setting CFLAGS to -O1 or below resolves the issue.
  Alternatively, using a newer version of the compiler (11.0) also works as
  intended. MAM - 2010/06/01


%%%%1.8.4%%%%   


HDF5 version 1.8.4 released on Tue Nov 10 15:33:14 CST 2009
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.3 and 
HDF5 1.8.4, and contains information on the platforms tested and 
known problems in HDF5-1.8.4
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.4 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.4 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.4 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.4 (current 
release) versus Release 1.8.3":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.3
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - Configuration suite now uses Automake 1.11 and Autoconf 2.64.
      MAM 2009/08/31.
    - Changed default Gnu fortran compiler from g95 to gfortran since
      gfortran is more likely installed with gcc now. -AKC 2009/07/19- 

    Library
    -------
    - The embedded library information is displayed by H5check_version() if a
      version mismatch is detected.  Also changed H5check_version() to
      suppress the warning message totally if $HDF5_DISABLE_VERSION_CHECK is 2
      or higher. (Old behavior treated 3 or higher the same as 1, that is
      print a warning and allows the program to continue. (AKC - 2009/9/28)
    - If a user does not care for the extra library information insert
      in the executables, he may turn it off by --disable-embedded-libinfo
      during configure. (AKC - 2009/9/15)

    Parallel Library
    ----------------
    - None
 
    Tools
    -----
    - h5diff: h5diff treats two INFINITY values different. Fixed by checking
      (value==expect) before call ABS(...) at h5diff_array.c. This will make 
      that (INF==INF) is true (INF is treated as an number instead of NaN) 
      (PC -- 2009/07/28)
    - h5diff: add option "--use-system-epsilon" to print difference if 
      (|a-b| > EPSILON).
      Change default to use strict equality (PC -- 2009/09/12)

    High-Level APIs
    ---------------
    - None

    F90 API
    -------
     - Added H5Oopen_by_addr_f MSB - 9/14/09

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================
    - PathScale compilers are recognized and can build the HDF5 library
      properly. AKC - 2009/7/28 -


Bug Fixes since HDF5-1.8.3
==========================

    Configuration
    -------------
    - Removed the following config files, as we no longer support them:
        config/dec-osf*, config/hpux11.00, config/irix5.x, 
        config/powerpc-ibm-aix4.x config/rs6000-ibm-aix5.x config/unicos*
      MAM - 2009/10/08
    - Modified configure and make process to properly preserve user's CFLAGS
      (and company) environment variables. Build will now properly use
      automake's AM_CFLAGS for any compiler flags set by the configure
      process. Configure will no longer modify CFLAGS directly, nor will 
      setting CFLAGS during make completely replace what configure has set up.
      MAM - 2009/10/08
    - Support for TFLOPS, config/intel-osf1, is removed since the TFLOPS
      machine has long retired. AKC - 2009/10/06.
    - Added $(EXEEXT) extension to H5detect when it's executed in the
      src/Makefile to generate H5Tinit.c so it works correctly on platforms 
      that require the full extension when running executables.
      MAM - 2009/10/01 - BZ #1613
    - Configure will now set FC and CXX to "no" when fortran and c++
      are not being compiled, respectively, so configure will not run
      some of the compiler tests for these languages when they are not 
      being used. MAM - 2009/10/01
    - The --enable-static-exec flag will now properly place the -static flag
      on the link line of all installed executables. This will force the 
      executable to link with static libraries over shared libraries, provided
      the static libraries are available. MAM - 2009/08/31 - BZ #1583
    - The PathScale compiler (v3.2) was mistaken as gcc v4.2.0 but it fails to
      recognize some gcc options. Fixed. (see bug 1301). AKC - 2009/7/28 -

    Library
    -------
    - Fixed a bug where writing and deleting many global heap objects (i.e.
      variable length data) would render the file unreadable.  Previously
      created files exhibiting this problem should now be readable.
      NAF - 2009/10/27 - 1483
    - Fixed error in library's internal caching mechanisms which could cause
      an assertion failure (and attendent core dump) when encountering an
      unusually formatted file.  (QAK - 2009/10/13)
    - Fixed incorrect return value for H5Pget_preserve. AKC - 2009/10/08 - 1628
    - Fixed an assertion failure that occurred when H5Ocopy was called on a
      dataset using a vlen inside a compound. NAF - 2009/10/02 - 1597
    - Fixed incorrect return value for H5Pget_filter_by_id1/2 in H5Ppublic.h.
      NAF - 2009/09/25 - 1620
    - Fixed a bug where properties weren't being compared with the registered
      compare callback. NAF - 2009/09/25 - 1555
    - Corrected problem where library would re-write the superblock in a file
      opened for R/W access, even when no changes were made to the file.
      (QAK - 2009/08/20, Bz#1473)
    - Fixed a bug where H5Pget_filter_by_id would succeed when called for a
      filter that wasn't present. NAF - 2009/06/25 - 1250
    - Fixed an issue with committed compound datatypes containing a vlen. Also
      fixed memory leaks involving committed datatypes. NAF - 2009/06/10 - 1593

    Parallel Library
    ----------------
    - None

    Tools
    -----
    - h5dump/h5ls display buffer resize fixed in tools library.
      ADB - 2009/7/21 - 1520
    - perf_serial test added to Windows projects and check batch file. 
      ADB - 2009/06/11 -1504


    F90 API
    ------
    - Fixed bug in h5lget_info_by_idx_f by adding missing arguments, 
      consequently changing the API. New API is:

      SUBROUTINE h5lget_info_by_idx_f(loc_id, group_name, index_field, order, n, &
        link_type, f_corder_valid, corder, cset, address, val_size, hdferr, lapl_id)

        MSB - 2009/9/17 - 1652

    - Corrected the values for the H5L_flags FORTRAN constants: 
        H5L_LINK_ERROR_F, H5L_LINK_HARD_F, H5L_LINK_SOFT_F, H5L_LINK_EXTERNAL_F
        MSB - 2009-09-17 - 1653

    - Added FORTRAN equivalent of C constant H5T_ORDER_NONE: H5T_ORDER_NONE_F
        MSB - 2009-9-24 - 1471

    C++ API
    ------
    - None

    High-Level APIs:
    ------
    - Fixed a bug where the H5TB API would forget the order of fields when added
      out of offset order. NAF - 2009/10/27 - 1582
    - H5DSis_attached failed to account for different platform types. Added a
      get native type call. ADB - 2009/9/29 - 1562

    Fortran High-Level APIs:
    ------
    - Lite: the h5ltread_dataset_string_f and h5ltget_attribute_string_f functions 
           had memory problems with the g95 fortran compiler. (PVN � 5/13/2009) 1522



Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 5.3                       xlc 7.0.0.8
    (LLNL Up)                     xlf 09.01.0000.0008
                                  xlC 7.0.0.8
                                  mpcc_r 7.0.0.8
                                  mpxlf_r 09.01.0000.0008

    Cray XT3 (2.0.41)             cc (pgcc) 7.1-4
    (SNL red storm)               ftn (pgf90) 7.1-4
                                  CC (pgCC) 7.1-4

    FreeBSD 6.3-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.3.5 20091004
                                  g++ 4.3.5 20091004
                                  gfortran 4.3.5 20091004

    FreeBSD 6.3-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.4.2 20091006
                                  g++ 4.4.2 20091006
                                  gfortran 4.4.2 20091006

    Linux 2.6.18-164.el5          gcc (GCC) 4.1.2 20080704
    #1 SMP i686 i686 i386         G95 (GCC 4.0.3 (g95 0.92!) Jun 24 2009)
    (jam)                         GNU Fortran (GCC) 4.1.2 20080704 
                                  (Red Hat 4.1.2-46)
                                  PGI C, Fortran, C++ 8.0-5 32-bit
                                  PGI C, Fortran, C++ 8.0-1 32-bit
                                  Intel(R) C Compiler for 32-bit
                                      applications, Versions 11.0, 11.1
                                  Intel(R) C++ Compiler for 32-bit
                                      applications, Version 11.0, 11.1
                                  Intel(R) Fortran Compiler for 32-bit
                                      applications, Version 11.0, 11.1
                                  Absoft 32-bit Fortran 95 10.0.7
                                  MPICH mpich2-1.0.8 compiled with
                                  gcc (GCC) 4.1.2 and G95 
                                  (GCC 4.0.3 (g95 0.92!)

    Linux 2.6.18-164.el5 #1 SMP   gcc 4.1.2 20080704
    x86_64 GNU/Linux              G95 (GCC 4.0.3 (g95 0.92!) Jun 24 2009)
    (amani)                       tested for both 32- and 64-bit binaries
                                  Intel(R) C, C++, Fortran Compilers for 
                                  applications running on Intel(R) 64, 
                                  Versions 11.1.
                                  PGI C, Fortran, C++ Version 9.0-4
                                         for 64-bit target on x86-64
                                  gcc 4.1.2 and G95  (GCC 4.0.3 (g95 0.92!)
                                  MPICH mpich2-1.0.8 compiled with
                                  gcc 4.1.2 and G95 (GCC 4.0.3 (g95 0.92!)
                                  GNU Fortran (GCC) 4.1.2 20080704
                                  (Red Hat 4.1.2-46)


    Linux 2.6.16.60-0.42.5 #1     Intel(R) C++ Version 10.1.017
    SGI Altix SMP ia64            Intel(R) Fortran Itanium(R) Version 10.1.017
    (cobalt)                      SGI MPI 1.38

    SunOS 5.10 32- and 64-bit     Sun C 5.9 SunOS_sparc Patch 124867-11 2009/04/30
    (linew)                       Sun Fortran 95 8.3 SunOS_sparc 
                                  Patch 127000-11 2009/10/06
                                  Sun C++ 5.9 SunOS_sparc 
                                  Patch 124863-16 2009/09/15 

    Intel Xeon Linux 2.6.18-      Intel(R) C++ Version 10.0.026
    92.1.10.el5_lustre.1.6.6smp-  Intel(R) Fortran Compiler Version 10.0.026
    perfctr #6 SMP                Open MPI 1.2.2
    (abe)                         MVAPICH2-0.9.8p28p2patched-intel-ofed-1.2
                                  compiled with icc v10.0.026 and ifort 10.0.026

    IA-64 Linux 2.4.21-309.tg1    gcc (GCC) 3.2.2
    #1 SMP ia64                   Intel(R) C++ Version 8.1.037
    (NCSA tg-login)               Intel(R) Fortran Compiler Version 8.1.033
                                  mpich-gm-1.2.7p1..16-intel-8.1.037-r1

    Linux 2.6.9-55.0.9.EL_lustre  Intel(R) C, C++, Fortran Compilers for 
    .1.4.11.1smp #1 SMP           applications running on Intel(R) 64, 
    SMP x86_64 GNU/Linux          Versions 10.1.
    (SNL Thunderbird)             
                                  
    Linux 2.6.18-76chaos #1 SMP   Intel(R) C, C++, Fortran Compilers for 
    SMP x86_64 GNU/Linux          applications running on Intel(R) 64, 
    (SNL Glory)                   Versions 10.1.
    
    Windows XP                    Visual Studio 2005 w/ Intel Fortran 9.1
                                  Cygwin(native gcc compiler and g95)

    Windows XP x64                Visual Studio 2005 w/ Intel Fortran 9.1

    Windows Vista                 Visual Studio 2005 w/ Intel Fortran 9.1

    Windows Vista x64             Visual Studio 2005 w/ Intel Fortran 9.1

    MAC OS  10.5.6 (Intel)        i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1
                                  GNU Fortran (GCC) 4.3.0 20070810
                                  G95 (GCC 4.0.3 (g95 0.91!) Apr 24 2008)
                                  Intel C, C++ and Fortran compilers 10.1


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                           C        F90    F90      C++   zlib  SZIP
                                   parallel        parallel
Solaris2.10 32-bit                   n        y      n        y     y     y
Solaris2.10 64-bit                   n        y      n        y     y     y
Windows XP                           n        y(4)   n(4)     y     y     y
Windows XP x64                       n        y(4)   n(4)     y     y     y
Windows Vista                        n        n      n        y     y     y
Mac OS X 10.5 Intel                  n        y      n        y     y     y
AIX 5.3 32- and 64-bit               n        y      n        y     y     n
FreeBSD 6.3-STABLE 32&64 bit         n        y      n        y     y     y
RedHat EL5 2.6.18-164 i686 GNU (1)W  y        y(2)   y        y     y     y
RedHat EL5 2.6.18-164 i686 Intel  W  n        y      n        y     y     n
RedHat EL5 2.6.18-164 i686 PGI    W  n        y      n        y     y     n
RedHat EL5 2.6.18-164 x86_64 GNU(1)W y        y(3)   y        y     y     y
RedHat EL5 2.6.18-164 x86_64 IntelW  n        y      n        y     y     n
RedHat EL5 2.6.18-164 x86_64 PGI  W  n        y      n        y     y     y
SuSe Linux 2.6.16 SGI Altix ia64  C  y        y      y        y     y     y
RedHat EL4 2.6.18 Xeon Lustre     C  y        y      y        y     y     n
SuSe Linux 2.4.21 ia64 Intel      C  y        y      y        y     y     n
Cray XT3 2.0.62                      y        y      y        y     y     n


Platform                           Shared  Shared    Shared    Thread-  
                                   C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                   y       y         y         y        
Solaris2.10 64-bit                   y       y         y         y        
Windows XP                           y       y(4)      y         y        
Windows XP x64                       y       y(4)      y         y        
Windows Vista                        y       n         n         y        
Mac OS X 10.5                        y       n         y         n        
AIX 5.3 32- and 64-bit               n       n         n         n        
FreeBSD 6.3-STABLE 32&64 bit         y       y         y         y        
RedHat EL5 2.6.18-164 i686 GNU (1)W  y       y(2)      y         y        
RedHat EL5 2.6.18-164 i686 Intel  W  y       y         y         n        
RedHat EL5 2.6.18-164 i686 PGI    W  y       y         y         n        
RedHat EL5 2.6.18-164 x86_64 GNU(1)W y       y         y         y        
RedHat EL5 2.6.18-164 x86_64 IntelW  y       y         y         n        
RedHat EL5 2.6.18-164 x86_64 PGI  W  y       y         y         n        
SuSe Linux 2.6.16 SGI Altix ia64  C  y                           n        
RedHat EL4 2.6.18 Xeon Lustre     C  y       y         y         n
SuSe Linux 2.4.21 ia64 Intel      C  y       y         y         n        
Cray XT3 2.0.62                      n       n         n         n

           (1) Fortran compiled with g95.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2005 or Cygwin
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* Parallel mode in AIX will fail some of the testcheck_version.sh tests where
  it treats "exit(134) the same as if process 0 had received an abort signal.
  This is fixed and will be available in the next release. AKC - 2009/11/3

* Some tests in tools/h5repack may fail in AIX systems when -q32 mode is used.
  The error is due to insufficient memory requested. Request a large amount
  of runtime memory by setting the following environment variable for more
  memory.
     LDR_CNTRL=MAXDATA=0x20000000@DSA
  AKC - 2009/10/31

* The PathScale MPI implementation, accessing a Panasas file system, would
  cause H5Fcreate() with H5F_ACC_EXCL to fail even when the file is not
  existing. This is due to the MPI_File_open() call failing if the amode has
  the MPI_MODE_EXCL bit set. (See bug 1468 for details.) AKC - 2009/8/11
 
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO. CMC - 2009/04/28

* There is a known issue in which HDF5 will change the timestamp on a file 
  simply by opening it with read/write permissions, even if the file is not
  modified in any way. This is due to the way in which HDF5 manages the file 
  superblock. A fix is currently underway and should be included in the 1.8.4
  release of HDF5. MAM - 2009/04/28

* For gcc v4.3 and v4.4, with production mode, if -O3 is used, H5Tinit.c
  would fail to compile. Actually bad H5Tinit.c is produced.  If -O (same
  as -O1) is used, H5Tinit.c compiled okay but test/dt_arith would fail.
  When -O0 (no optimizatio) is used, H5Tinit.c compilete okay and all
  tests passed. Therefore, -O0 is imposed for v4.3 and v4.4 of gcc.
  AKC - 2009/04/20

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  AKC - 2008/11/10

* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect seeing this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  AKC - 2008/05/28

* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag will only statically link libraries
  if the static version of that library is present. If only the shared version
  of a library exists (i.e., most system libraries on Solaris, AIX, and Mac, 
  for example, only have shared versions), the flag should still result in a 
  successful compilation, but note that the installed executables will not be 
  fully static. Thus, the only guarantee on these systems is that the 
  executable is statically linked with just the HDF5 library.

* There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

%%%%1.8.3%%%%   


HDF5 version 1.8.3 released on Mon May  4 09:21:00 CDT 2009
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.2 and 
HDF5 1.8.3, and contains information on the platforms tested and 
known problems in HDF5-1.8.3. 
For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.3 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.3 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.3 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.3 (current 
release) versus Release 1.8.2":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for New Platforms, Languages, and Compilers
- Bug Fixes since HDF5-1.8.2
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

    Configuration
    -------------
    - Added libtool version numbers to generated c++, fortran, and 
      hl libraries. MAM 2009/04/19.
    - Regenerated Makefile.ins using Automake 1.10.2. MAM 2009/04/19.
    - Added a Make target of check-all-install to test the correctness of
      installing via the prefix= or $DESTDIR options. AKC - 2009/04/14

    Library
    -------
    - Embed the content of libhdf5.settings into the hdf5 executables
      so that an "orphaned" executables can display (via the Unix
      strings command, for example) the library settings used to build
      the executables.  This is a prototype implementation. Improvement will
      be added in next release.  AKC - 2009/04/20
    - Separated "factory" free list class from block free lists. These free
      lists are dynamically created and manage blocks of a fixed size.
      H5set_free_list_limits() will use the same settings specified for block
      free lists for factory free lists. NAF - 2009/04/08
    - Added support for dense attributes to H5Ocopy. XCao/NAF - 2009/01/29
    - Added H5Pset_elink_cb and H5Pget_elink_cb functions to support a
      user-defined callback function for external link traversal.
      NAF - 2009/01/08
    - Added H5Pset_elink_acc_flags and H5Pget_elink_acc_flags functions to
      allow the user to specify the file access flags used to open the target
      file of an external link. NAF - 2009/01/08
    - Added H5Pset_chunk_cache() and H5Pget_chunk_cache() functions to allow
      individual rdcc configuration for each dataset.  Added
      H5Dget_access_plist() function to retrieve a dataset access property
      list from a dataset. NAF - 2008/11/12
    - Added H5Iis_valid() function to check if an id is valid without
      producing an error message. NAF - 2008/11/5
    - Added code to maintain a min_clean_fraction in the metadata cache when
      in serial mode. MAM - 2009/01/9

    Parallel Library
    ----------------
    - Modified parallel tests to run with arbitrary number of processes. The
      modified tests are testphdf5 (parallel dataset access), t_chunk_alloc
      (chunk allocation), and t_posix_compliant (posix compliance). The rest of
      the parallel tests already use in the code the number of processes
      available in the communicator. (CMC - 2009/04/28)
 
    Tools
    -----
    - h5diff new flag, -c, --compare, list objects that are not comparable.
      PVN - 2009/4/2 - 1368
    - h5diff new flag, -N, --nan, avoids NaNs detection. PVN - 2009/4/2
    - h5dump correctly specifies XML dtd / schema urls ADB - 2009/4/3 - 1519
    - h5repack now handles group creation order. PVN - 2009/4/2 - 1402
    - h5repack: When user doesn't specify a chunk size, h5repack now 
      defines a default chunk size as the same size of the size of the 
      hyperslab used to read the chunks. The size of the hyperslabs are 
      defined as the size of each dimension or a predefined constant, 
      whatever is smaller. This assures that the chunk read fits in the 
      chunk cache. PVN - 2008/11/21

    High-Level APIs
    ---------------
    - Table: In version 3.0 of Table, the writing of the "NROWS" attribute 
      (used to store number of records) was deprecated. PVN - 2008/11/24

    F90 API
    -------
    - Added for the C APIs the Fortran wrappers:
          h5dget_access_plist_f
          h5iis_valid_f
          h5pset_chunk_cache_f
          h5pget_chunk_cache_f
      MSB - 2009/04/17

    C++ API
    -------
    - None


Support for New Platforms, Languages, and Compilers
===================================================


Bug Fixes since HDF5-1.8.2
==========================

    Configuration
    -------------
    - The --includedir=DIR configuration option now works as intended, and 
      can be used to specify the location to install C header files. The
      default location remains unchanged, residing at ${prefix}/include.
      MAM - 2009/03/10 - BZ #1381
    - Configure no longer removes the '-g' flag from CFLAGS when in production
      mode if it has been explicitly set in the CFLAGS environment variable 
      prior to configuration. MAM - 2009/03/09 - BZ #1401

    Library
    -------
    - Added versioning to H5Z_class_t struct to allow compatibility with 1.6
      API. NAF - 2009/04/20 - 1533
    - Fixed a problem with using data transforms with non-native types in the
      file. NAF - 2009/04/20 - 1548
    - Added direct.h include file to windows section of H5private.h 
      to fix _getcwd() warning. ADB - 2009/04/14 - 1536
    - Fixed a bug that prevented external links from working after calling
      H5close(). NAF - 2009/04/10 - 1539
    - Modified library to write cached symbol table information to the
      superblock, to allow library versions 1.3.0 to 1.6.3 to read files created
      by this version. NAF - 2009/04/08 - 1423
    - Changed skip lists to use a deterministic algorithm.  The library should
      now never call rand() or srand(). NAF - 2009/04/08 - 503
    - Fixed a bug where H5Lcopy and H5Lmove wouldn't create intermediate groups
      when that property was set. NAF - 2009/04/07 - 1526
    - Fixed a bug that caused files with a user block to grow by the size of the
      user block every time they were opened. NAF - 2009/03/26 - 1499
    - Fixed a rare problem that could occur with files using the old (pre 1.4)
      array datatype. NAF - 2009/03/23
    - Modified library to be able to open files with corrupt root group symbol
      table messages, and correct these errors if they are found.  Such files
      can only be successfully opened with write access. NAF - 2009/03/23 - 1189
    - Removed the long_long #define and replaced all instances with 
      "long long". This caused problems with third party products. All 
      currently supported compliers support the type. ADB - 2009/03/05
    - Fixed various bugs that could prevent the fill value from being written
      in certain rare cases. NAF - 2009/02/26 - 1469
    - Fixed a bug that prevented more than one dataset chunk from being cached
      at a time. NAF - 2009/02/12 - 1015
    - Fixed an assertion failure caused by opening an attribute multiple times
      through multiple file handles. NAF - 2009/02/12 - 1420
    - Fixed a problem that could prevent the user from adding attributes (or any
      object header message) in some circumstances. NAF - 2009/02/12 - 1427
    - Fixed a bug that could cause problems when an attribute was added to a
      committed datatype using the committed datatype's datatype.
      NAF - 2009/02/12
    - Fixed a bug that could cause problems when copying an object with a shared
      message in its own object header. NAF - 2009/01/29
    - Changed H5Tset_order to properly reject H5T_ORDER_NONE for most datatypes.
      NAF - 2009/01/27 - 1443
    - Fixed a bug where H5Tpack wouldn't remove trailing space from an otherwise
      packed compound type. NAF - 2009/01/14
    - Fixed up some old v2 btree assertions that get run in debug mode that
      were previously failing on compilation, and removed some of the 
      more heavily outdated and non-rewritable ones. MAM - 2008/12/15
    - Fixed a bug that could cause problems when "automatically" unmounting
      multiple files. NAF - 2008/11/17
    - H5Dset_extent: when shrinking dimensions, some chunks were not deleted.  
      PVN - 2009/01/8 

    Parallel Library
    ----------------
    - None

    Tools
    -----
    - Fixed many problems that could occur when using h5repack with named
      datatypes. NAF - 2009/4/20 - 1516/1466
    - h5dump, h5diff, h5repack were not reading (by hyperslabs) datasets 
      that have a datatype datum size greater than H5TOOLS_BUFSIZE, a constant
      defined as 1024Kb, such as array types with large dimensions. 
      PVN - 2009/4/1 - 1501
    - h5import: By selecting a compression type, a big endian byte order 
      was being selected. PVN - 2009/3/11 - 1462
    - zip_perf.c had missing argument on one of the open() calls. Fixed.
      AKC - 2008/12/9

    F90 API
    ------
    - None

    C++ API
    ------
    - None

    High-Level APIs:
    ------
    - Dimension scales: The scale index return value in H5DSiterate_scales 
      was not always incremented. PVN - 2009/4/8 - 1538

    Fortran High-Level APIs:
    ------
    - Lite: The h5ltget_dataset_info_f function (gets information about 
      a dataset) was not correctly returning the dimension array 
                                   PVN - 2009/3/23


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 5.3                       xlc 7.0.0.8
    (LLNL Up)                     xlf 09.01.0000.0008
                                  xlC 7.0.0.8
                                  mpcc_r 7.0.0.8
                                  mpxlf_r 09.01.0000.0008

    Cray XT3 (2.0.41)             cc (pgcc) 7.1-4
    (SNL red storm)               ftn (pgf90) 7.1-4
                                  CC (pgCC) 7.1-4

    FreeBSD 6.3-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.3.4 20090419
                                  g++ 4.3.4 20090419
                                  gfortran 4.3.4 20090419

    FreeBSD 6.3-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.4.1 20090421
                                  g++ 4.4.1 20090421
                                  gfortran 4.4.1 20090421

    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.4.4m
                                  F90 MIPSpro 7.4.4m 
                                  C++ MIPSpro cc 7.4.4m

    Linux 2.6.18-128.1.6.el5xen   gcc (GCC) 4.1.2
    #1 SMP i686 i686 i386         G95 (GCC 4.0.3 (g95 0.92!) Feb 4 2009)
    (jam)                         PGI C, Fortran, C++ 7.2-1 32-bit
                                  PGI C, Fortran, C++ 8.0-1 32-bit
                                  Intel(R) C Compiler for 32-bit
                                      applications, Versions 10.1, 11.0
                                  Intel(R) C++ Compiler for 32-bit
                                      applications, Version 10.1, 11.0
                                  Intel(R) Fortran Compiler for 32-bit
                                      applications, Version 10.1, 11.0
                                  Absoft 32-bit Fortran 95 10.0.7
                                  MPICH mpich2-1.0.8 compiled with
                                  gcc 4.1.2 and G95  (GCC 4.0.3 (g95 0.92!)

    Linux 2.6.9-42.0.10.ELsmp #1  gcc (GCC) 3.4.6
    SMP i686 i686 i386            G95 (GCC 4.0.3 (g95 0.92!) Feb 4 2009)
    (kagiso)                      MPICH mpich2-1.0.8 compiled with
                                  gcc 3.4.6 and G95  (GCC 4.0.3 (g95 0.92!)

    Linux 2.6.16.60-0.37-smp #1   gcc 4.1.2
    SMP x86_64 GNU/Linux          G95 (GCC 4.0.3 (g95 0.92!) Feb 4 2009)
    (smirom)                      Intel(R) C, C++, Fortran Compilers for 
                                  applications running on Intel(R) 64, 
                                  Versions 10.1, 11.0.
                                  PGI C, Fortran, C++ Version 7.2-1, 8.0-1
                                         for 64-bit target on x86-64
                                  gcc 4.1.2 and G95  (GCC 4.0.3 (g95 0.92!)
                                  MPICH mpich2-1.0.8 compiled with
                                  gcc 4.1.2 and G95 (GCC 4.0.3 (g95 0.92!)
                                  tested for both 32- and 64-bit binaries

    Linux 2.6.16.54-0.2.5 #1      Intel(R) C++ Version 10.1.017
    SGI Altix SMP ia64            Intel(R) Fortran Itanium(R) Version 10.1.017
    (cobalt)                      SGI MPI 1.38

    SunOS 5.10 32- and 64-bit     Sun WorkShop 6 update 2 C 5.9 Patch 124867-09
    (linew)                       Sun WorkShop 6 update 2 Fortran 95 8.3 
                                  Patch 127000-07
                                  Sun WorkShop 6 update 2 C++ 5.8 
                                  Patch 124863-11

    Intel Xeon Linux 2.6.18-      gcc 3.4.6 20060404
    92.1.10.el5_lustre.1.6.6smp-  Intel(R) C++ Version 10.0.026
    perfctr #2 SMP                Intel(R) Fortran Compiler Version 10.0.026
    (abe)                         Open MPI 1.2.2
                                  MVAPICH2-0.9.8p28p2patched-intel-ofed-1.2
                                  compiled with icc v10.0.026 and ifort 10.0.026

    IA-64 Linux 2.4.21-309.tg1    gcc (GCC) 3.2.2
    #1 SMP ia64                   Intel(R) C++ Version 8.1.037
    (NCSA tg-login)               Intel(R) Fortran Compiler Version 8.1.033
                                  mpich-gm-1.2.7p1..16-intel-8.1.037-r1

    Linux 2.6.9-55.0.9.EL_lustre  Intel(R) C, C++, Fortran Compilers for 
    .1.4.11.1smp #1 SMP           applications running on Intel(R) 64, 
    SMP x86_64 GNU/Linux          Versions 9.1.
    (SNL Spirit)             
                                  
    Linux 2.6.9-55.0.9.EL_lustre  Intel(R) C, C++, Fortran Compilers for 
    .1.4.11.1smp #1 SMP           applications running on Intel(R) 64, 
    SMP x86_64 GNU/Linux          Versions 10.1.
    (SNL Thunderbird)             
                                  
    Linux 2.6.18-63chaos #1 SMP   Intel(R) C, C++, Fortran Compilers for 
    SMP x86_64 GNU/Linux          applications running on Intel(R) 64, 
    (SNL Glory)                   Versions 10.1.
    
    Linux 2.6.18-63chaos #1 SMP   Intel(R) C, C++, Fortran Compilers for 
    SMP x86_64 GNU/Linux          applications running on Intel(R) 64, 
    (LLNL Zeus)                   Versions 9.1.
				  gcc/gfortran/g++ (GCC) 4.1.2.

    Windows XP                    Visual Studio .NET
                                  Visual Studio 2005 w/ Intel Fortran 9.1
                                  Cygwin(native gcc compiler and g95)

    Windows XP x64                Visual Studio 2005 w/ Intel Fortran 9.1

    Windows Vista                 Visual Studio 2005

    MAC OS  10.5.6 (Intel)        i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1
                                  GNU Fortran (GCC) 4.3.0 20070810
                                  G95 (GCC 4.0.3 (g95 0.91!) Apr 24 2008)
                                  Intel C, C++ and Fortran compilers 10.1


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          C   = Cluster
          W   = Workstation
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                           C        F90    F90      C++   zlib  SZIP
                                   parallel        parallel
Solaris2.10 32-bit                   n        y      n        y     y     y
Solaris2.10 64-bit                   n        y      n        y     y     y
IRIX64_6.5 32-bit                    n        n      n        n     y     y
IRIX64_6.5 64-bit                    n        y      y        y     y     y
Windows XP                           n        y(4)   n(4)     y     y     y
Windows XP x64                       n        y(4)   n(4)     y     y     y
Windows Vista                        n        n      n        y     y     y
Mac OS X 10.5 Intel                  n        y      n        y     y     y
AIX 5.3 32- and 64-bit               n        y      n        y     y     n
FreeBSD 6.3-STABLE 32&64 bit         n        y      n        y     y     y
RedHat EL4 2.6.9-42 i686 GNU (1)  W  y        y      y        y     y     y
RedHat EL5 2.6.18-128 i686 GNU (1)W  y        y(2)   y        y     y     y
RedHat EL5 2.6.18-128 i686 Intel  W  n        y      n        y     y     n
RedHat EL5 2.6.18-128 i686 PGI    W  n        y      n        y     y     n
SuSe Linux 2.6.16 x86_64 GNU (1)  W  y        y(3)   y        y     y     y
SuSe Linux 2.6.16 x86_64 Intel    W  n        y      n        y     y     n
SuSe Linux 2.6.16 x86_64 PGI      W  n        y      n        y     y     y
SuSe Linux 2.6.16 SGI Altix ia64  C  y        y      y        y     y     y
RedHat EL4 2.6.18 Xeon Lustre     C  y        y      y        y     y     n
SuSe Linux 2.4.21 ia64 Intel      C  y        y      y        y     y     n
Cray XT3 2.0.41                      y        y      y        y     y     n


Platform                           Shared  Shared    Shared    Thread-  
                                   C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit                   y       y         y         y        
Solaris2.10 64-bit                   y       y         y         y        
IRIX64_6.5 32-bit                    y       dna       y         y        
IRIX64_6.5 64-bit                    y       y         n         y        
Windows XP                           y       y(4)      y         y        
Windows XP x64                       y       y(4)      y         y        
Windows Vista                        y       n         n         y        
Mac OS X 10.5                        y       n         y         n        
AIX 5.3 32- and 64-bit               n       n         n         n        
FreeBSD 6.3-STABLE 32&64 bit         y       n         y         y        
RedHat EL4 2.6.9-42 i686 GNU (1)  W  y       y         y         y        
RedHat EL5 2.6.18-128 i686 GNU (1)W  y       y(2)      y         y        
RedHat EL5  2.6.18-128 i686 Intel W  y       y         y         n        
RedHat EL5 2.6.18-128 i686 PGI    W  y       y         y         n        
SuSe Linux 2.6.16 x86_64 GNU (1)  W  y       y         y         y        
SuSe Linux 2.6.16 x86_64 Intel    W  y       y         y         n        
SuSe Linux 2.6.16 x86_64 PGI      W  y       y         y         n        
SuSe Linux 2.6.16 SGI Altix ia64  C  y                           n        
RedHat EL4 2.6.18 Xeon Lustre     C  y       y         y         n
SuSe Linux 2.4.21 ia64 Intel      C  y       y         y         n        
Cray XT3 2.0.41                      n       n         n         n

           (1) Fortran compiled with g95.
           (2) With PGI and Absoft compilers.
           (3) With PGI compiler for Fortran.
           (4) Using Visual Studio 2005 or Cygwin
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* Parallel tests failed with 16 processes with data inconsistency at testphdf5
  / dataset_readAll. Parallel tests also failed with 32 and 64 processes with
  collective abort of all ranks at t_posix_compliant / allwrite_allread_blocks
  with MPI IO. CMC - 2009/04/28

* There is a known issue in which HDF5 will change the timestamp on a file 
  simply by opening it with read/write permissions, even if the file is not
  modified in any way. This is due to the way in which HDF5 manages the file 
  superblock. A fix is currently underway and should be included in the 1.8.4
  release of HDF5. MAM - 2009/04/28

* For gcc v4.3 and v4.4, with production mode, if -O3 is used, H5Tinit.c
  would fail to compile. Actually bad H5Tinit.c is produced.  If -O (same
  as -O1) is used, H5Tinit.c compiled okay but test/dt_arith would fail.
  When -O0 (no optimizatio) is used, H5Tinit.c compilete okay and all
  tests passed. Therefore, -O0 is imposed for v4.3 and v4.4 of gcc.
  AKC - 2009/04/20

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  AKC - 2008/11/10

* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect seeing this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  AKC - 2008/05/28

* We have discovered two problems when running collective IO parallel HDF5 
  tests with chunking storage on the ChaMPIon MPI compiler on tungsten, a 
  Linux cluster at NCSA.

  Under some complex selection cases: 
  1) MPI_Get_element returns the wrong value.
  2) MPI_Type_struct also generates the wrong derived datatype and corrupt 
     data may be generated.
  These issues arise only when turning on collective IO with chunking storage 
  with some complex selections. We have not found these problems on other 
  MPI-IO compilers. If you encounter these problems, you may use independent 
  IO instead.

  To avoid this behavior, change the following line in your code
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
  to
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_INDEPENDENT);
  KY - 2007/08/24

* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* For LLNL, uP: both serial and parallel tests pass.  
  Zeus: Serial tests pass but parallel tests fail with a known problem in MPI.
  ubgl: Serial tests pass but parallel tests fail. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* On IRIX6.5, when the C compiler version is greater than 7.4, complicated
  MPI derived datatype code will work. However, the user should increase
  the value of the MPI_TYPE_MAX environment variable to some appropriate value 
  to use collective irregular selection code.  For example, the current 
  parallel HDF5 test needs to raise MPI_TYPE_MAX to 200,000 to pass the test. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system libraries on 
  Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platforms for serial mode. The parallel mode works fine with 
  this option.
  
  It is suggested that you do not use this option on these platforms
  during configuration.

* There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

* Information about building with PGI and Intel compilers is available in
  the INSTALL file sections 4.7 and 4.8.


%%%%1.8.2%%%%   
 

HDF5 version 1.8.2 released on Mon Nov 10 15:43:09 CST 2008
================================================================================

INTRODUCTION
============

This document describes the differences between HDF5-1.8.1 and HDF5 1.8.2, 
and contains information on the platforms tested and known problems in 
HDF5-1.8.2. For more details, see the files HISTORY-1_0-1_8_0_rc3.txt 
and HISTORY-1_8.txt in the release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.2 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.2 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.2 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.2 (current 
release) versus Release 1.8.1":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.8.1
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

        Configuration
        -------------
        - Upgraded libtool to version 2.2.6a. (MAM - 2008/10/15).

        Library
        -------
	- Added two new public routines: H5Pget_elink_fapl() and
      	  H5Pset_elink_fapl(). (see bug #1247) (VC - 2008/10/13)
        - Improved free space tracking in file to be faster. (QAK - 2008/10/06)
        - Added 'mounted' field to H5G_info_t struct. (QAK - 2008/07/15)

        Parallel Library
        ----------------
        - None

        Tools
        -----
        - h5repack: added new options -u and -b to add a userblock to an HDF5 
          file during the repack.  (PVN - 2008/08/26)
        - h5repack: added options -t and -a to call H5Pset_alignment while 
          creating a repacked file. (PVN - 2008/08/29)
        - h5ls: added capability to traverse through external links when the -r
          (recursive) flag is given. (NAF - 2008/09/16)
        - h5ls: added -E option to enable traversal of external links.  
          h5ls will not traverse external links without this flag being set.
            (NAF - 2008/10/06)
        - h5dump: when -b flag is used without a keyword after it, binary 
          output defaults to NATIVE. MEMORY keyword was deprecated 
          and replaced by NATIVE keyword. (PVN - 2008/10/30)
        - h5diff: returns 1 when file graphs differ by any object.  
          Error return code was changed to 2 from -1.  (PVN - 2008/10/30)
        - h5import: TEXTFPE (scientific format) was deprecated. Use TEXTFP 
          instead (PVN - 2008/10/30)



        F90 API
        ------
         - Added optional parameter 'mounted' to H5Gget_info_f, 
           H5Gget_info_by_idx_f, H5Gget_info_by_name_f (MSB - 2008/09/24)
	 - Added H5Tget_native_type_f (MSB - 2008/09/30)
	 
	 
        C++ API
        ------
        - These member functions were added as wrapper for H5Rdereference to
          replace the incorrect IdComponent::dereference().
             void H5Object::dereference(H5Object& obj, void* ref, 
                                        H5R_type_t ref_type=H5R_OBJECT)
             void H5Object::dereference(H5File& h5file, void* ref, 
                                        H5R_type_t ref_type=H5R_OBJECT)
             void H5Object::dereference(Attribute& obj, void* ref, 
                                        H5R_type_t ref_type=H5R_OBJECT)

          In addition, these constructors were added to create the associated
          objects by way of dereference:
             DataSet(H5Object& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             DataSet(H5File& file, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             DataSet(Attribute& attr, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             Group(H5Object& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             Group(H5File& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             Group(Attribute& attr, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             DataType(H5Object& obj, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             DataType(H5File& file, void* ref, H5R_type_t ref_type=H5R_OBJECT)
             DataType(Attribute& attr, void* ref, H5R_type_t ref_type=H5R_OBJECT)
          (BMR - 2008/10/29)


Support for New Platforms, Languages, and Compilers
===================================================
        - Intel 10.1 is supported on Mac OS X 10.5.4.
          Note:
          When Fortran is enabled, configure automatically
          disables the build of shared libraries (i.e., only
          static C and C++ HDF5 libraries will be built
          along with the static HDF5 Fortran library).
          Intel 10.1 C and C++ compilers require 
          "-no-multibyte-chars" compilation flag due to the known
          bug in the compilers.
            (EIP - 2008/10/30)


Bug Fixes since HDF5-1.8.1 
==========================

        Configuration
        -------------
        - Fixed error with 'make check install' failing due to h5dump
          needing other tools built first. (MAM - 2008/10/15).
        - When using shared szip, it is no longer necessary to specify
          the path to the shared szip libraries in LD_LIBRARY_PATH.
           (MAM - 2008/10/15).
	- The file libhdf5_fortran.settings is not installed since its content
	  is included in libhdf5.settings now. (AKC - 2008/10/21)
        - "make DESTDIR=xxx install" failed to install some tools and files
          (e.g., h5cc and fortran modules). Fixed. (AKC - 2008/10/8).

        Library
        -------
        - H5Ovisit and H5Ovisit_by_name will now properly terminate when the
            callback function returns a positive value on the starting object.
            (NAF - 2008/11/03)
        - Fixed an error where a null message could be created that was larger
            than could be written to the file.  (NAF - 2008/10/23)
        - Corrected error with family/split/multi VFD not updating driver info
            when "latest" version of the file format used. (QAK - 2008/10/14)
        - Corrected alignment+threshold errors to work correctly when metadata
            aggregation is enabled. (QAK - 2008/10/06)
        - Changed H5Fget_obj_count and H5Fget_obj_ids to ignore objects
            registered by the library for internal library use.
            (NAF - 2008/10/06)
        - Fixed potential memory leak during compound conversion.
            (NAF - 2008/10/06)
        - Changed the return value of H5Fget_obj_count from INT to SSIZE_T. 
            Also changed the return value of H5Fget_obj_ids from HERR_T to 
            SSIZE_T and the type of the parameter MAX_OBJS from INT to SIZE_T. 
            (SLU - 2008/09/26)
        - Fixed an issue that could cause data to be improperly overwritten
            during compound type conversion.  (NAF - 2008/09/19)
        - Fixed pointer alignment violations that could occur during vlen
            conversion.  (NAF - 2008/09/16)
        - Fixed problem where library could cause a segmentation fault when
            an invalid location ID was given to H5Giterate(). (QAK - 2008/08/19)
        - Fixed improper shutdown when objects have reference count > 1.  The
            library now tracks reference count due to the application separately
            from that due to internal library routines.  (NAF - 2008/08/19)
        - Fixed assertion failure caused by incorrect array datatype version.
            (NAF - 2008/08/08)
        - Fixed an issue where mount point traversal would fail when using
            multiple handles for the child.  (NAF - 2008/08/07)
        - Fixed an issue where mount points were inaccessible when using 
            multiple file handles for the parent. The mount table is now in 
            the shared file structure (the parent pointer is still in the 
            top structure).  (NAF - 2008/08/07)
        - Fixed assertion failure caused by incorrect array datatype version.
            (NAF - 2008/08/04)
        - Fixed issue where a group could have a file mounted on it twice.
            (QAK - 2008/07/15)
        - When an attribute was opened twice and data was written with 
            one of the handles, the file didn't have the data. It happened 
            because each handle had its own object structure, and the empty 
            one overwrote the data with fill value.  This is fixed by making 
            some attribute information like the data be shared in the 
            attribute structure.  (SLU - 2008/07/07)
        - Fixed a Windows-specific issue in the ohdr test which was causing 
            users in some timezones to get false errors. This a deficiency in 
            the Windows mktime() function, and has been handled properly.  
            (SJW  - 2008/06/19)

        Parallel Library
        ----------------
        - None

        Tools
        -----
        - h5dump now checks for uniqueness of committed datatypes.
            (NAF - 2008/10/15)
        - Fixed unnecessary indentation of committed datatypes in h5dump.
            (NAF - 2008/10/15)
	- Fixed bugs in h5stat: segmemtation fault when printing groups and
          print warning message when traversal of objects is unsuccessful.
          (see bug #1253) (VC- 2008/10/13)
        - Fixed bug in h5ls that prevented relative group listings (like
            "h5ls foo.h5/bar") from working correctly (QAK - 2008/06/03)
        - h5dump: when doing binary output (-b), the stdout printing of 
             attributes was done incorrectly. Removed printing of attributes 
             when doing binary output. (PVN - 2008/06/05)


        F90 API
        ------
        - h5sselect_elements_f: Added additional operators H5S_SELECT_APPEND 
            and H5S_SELECT_PREPEND (MSB - 2008/09/30)
	- h5sget_select_elem_pointlist: Fixed list of returned points by 
            rearranging the point list correctly by accounting for C 
            conventions. (MSB - 2008/09/30)
        - h5sget_select_hyper_blocklist_f: Fixed error in transposed dimension 
            of arrays.(MSB - 2008/9/30)
        - h5sget_select_bounds_f: Swapped array bounds to account for C and 
            Fortran reversed array notation (MSB - 2008/9/30)
	- Changed to initializing string to a blank character instead of a 
            null type in tH5P.f90 to fix compiling error using AIX 5.3.0 
            (MSB - 2008/7/29)
        - Fixed missing commas in H5test_kind.f90 detected by NAG compiler 
            (MSB - 2008/7/29)
        - Fixed passing and array to a scalar in tH5A_1_8.f90 detected by 
            NAG compiler (MSB - 2008/7/29)
	- Added the ability of the test programs to use the status of 
            HDF5_NOCLEANUP to determine if the *.h5 files should be removed 
            or not after the tests are completed (MSB - 2008/10/1)
	- In nh5tget_offset_c: (MSB 9/12/2008)
           If offset was equal to 0 it returned the error code of -1, 
           this was changed to return an error code of -1 when the offset 
           value is < 0.
        - Uses intrinsic Fortran function SIZEOF if available when detecting 
           type of INTEGERs and REALs in H5test_kind.f90 (MSB - 2008/9/3)
        - Put the DOUBLE PRECISION interfaces in a separate module and 
           added a USE statement for the module. The interfaces are 
           included/excluded depending on the state of FORTRAN_DEFAULT_REAL
           is DBLE_F which detects if the default REAL is DOUBLE PRECISION.
           This allows the library to be compiled with -r8 Fortran flag 
           without the user needing to edit the source code. 
           (MSB - 200/8/27)
        - Enable building shared library for fortran by adding the flag -fPIC 
          to the compile flags for versions of Intel Fortran compiler >=9
           (MSB  - 2008/8/26)

        C++ API
        ------
        - Fixed a design bug which allowed an Attribute object to create/modify
          attributes (bugzilla #1068).  The API class hierarchy was revised
          to address the problem.  Classes AbstractDS and Attribute are moved
          out of H5Object.  Class Attribute now multiply inherits from
          IdComponent and AbstractDs and class DataSet from H5Object and
          AbstractDs.  In addition, the data member IdComponent::id was
          moved into subclasses: Attribute, DataSet, DataSpace, DataType,
          H5File, Group, and PropList. (BMR - 2008/05/20)
        - IdComponent::dereference was incorrect and replaced as described
          in "New Features" section.
          (BMR - 2008/10/29)


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    AIX 5.3			  xlc 7.0.0.8
				  xlf 09.01.0000.0008
				  xlC 7.0.0.8
				  mpcc_r 7.0.0.8
				  mpxlf_r 09.01.0000.0008

    Cray XT3 (2.0.41)             cc (pgcc) 7.1-4
    (red storm)                   ftn (pgf90) 7.1-4
				  CC (pgCC) 7.1-4

    FreeBSD 6.3-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.5 20080702
                                  g++ 4.2.5 20080702
                                  gfortran 4.2.5 20080702

    FreeBSD 6.3-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.5 20080702
                                  g++ 4.2.5 20080702
                                  gfortran 4.2.5 20080702

    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.4.4m
                                  F90 MIPSpro 7.4.4m 
                                  C++ MIPSpro cc 7.4.4m

    Linux 2.6.9-42.0.10.ELsmp #1  gcc (GCC) 3.4.6
    SMP i686 i386                 G95 (GCC 4.0.3 (g95 0.92!) April 18 2007)
    (kagiso)                      PGI C, Fortran, C++ 7.2-1 32-bit
                                  Intel(R) C Compiler for 32-bit
                                      applications, Version 10.1
                                  Intel(R) C++ Compiler for 32-bit
                                      applications, Version 10.1
                                  Intel(R) Fortran Compiler for 32-bit
                                      applications, Version 10.1
                                  Absoft 32-bit Fortran 95 10.0.4
                                  MPICH mpich-1.2.7 compiled with
                                  gcc 3.4.6 and G95  (GCC 4.0.3 (g95 0.92!)
                                  MPICH mpich2-1.0.6p1 compiled with
                                  gcc 3.4.6 and G95 (GCC 4.0.3 (g95 0.92!)

    Linux 2.6.16.46-0.14-smp #1   Intel(R) C++ for Intel(R) EM64T 
    SMP x86_64 GNU/Linux          Ver.  10.1.013
    (smirom)                      Intel(R) Fortran Intel(R) EM64T 
                                  Ver.  10.1.013
                                  PGI C, Fortran, C++ Version 7.2-1
                                         for 64-bit target on x86-64
                                  MPICH mpich-1.2.7 compiled with
                                  gcc 4.1.2 and G95  (GCC 4.0.3 (g95 0.92!)
                                  MPICH mpich2-1.0.7 compiled with
                                  gcc 4.1.2 and G95 (GCC 4.0.3 (g95 0.92!)
                                  tested for both 32- and 64-bit binaries

    Linux 2.6.16.54-0.2.5 #1      Intel(R) C++ Version 10.1.017
    Altix SMP ia64                Intel(R) Fortran Itanium(R) Version 10.1.017
    (cobalt)                      SGI MPI 1.16

    SunOS 5.10 32- and 64-bit     Sun WorkShop 6 update 2 C 5.8
    (linew)                       Sun WorkShop 6 update 2 Fortran 95 8.2
                                  Sun WorkShop 6 update 2 C++ 5.8
                                  Patch 121019-06

    Xeon Linux 2.6.9-42.0.10.EL_lustre-1.4.10.1smp
    (abe)                         Intel(R) C++ Version 10.0.026
                                  Intel(R) Fortran Compiler Version 10.0.026
                                  Open MPI 1.2.2
                                  MVAPICH2-0.9.8p28p2patched-intel-ofed-1.2
                                  compiled with icc v10.0.026 and 
                                  ifort 10.0.026

    IA-64 Linux 2.4.21-309.tg1 #1 SMP
        ia64                      gcc (GCC) 3.2.2
    (NCSA tg-login)               Intel(R) C++ Version 8.1.037
                                  Intel(R) Fortran Compiler Version 8.1.033
                                  mpich-gm-1.2.7p1..16-intel-8.1.037-r1

    Intel 64 Linux 2.6.9-42.0.10.EL_lustre-1.4.10.1smp
    (abe)                         gcc 3.4.6 20060404
                                  Intel(R) C++ Version 10.0
                                  Intel (R) Fortran Compiler Version 10.0
                                  mvapich2-0.9.8p2patched-intel-ofed-1.2

    Windows XP                    Visual Studio .NET
                                  Visual Studio 2005 w/ Intel Fortran 9.1
                                  Cygwin(native gcc compiler and g95)

    Windows XP x64                Visual Studio 2005 w/ Intel Fortran 9.1

    Windows Vista                 Visual Studio 2005

    MAC OS  10.5.4 (Intel)        i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1
                                  GNU Fortran (GCC) 4.3.0 20070810
                                  G95 (GCC 4.0.3 (g95 0.91!) Apr 24 2008)
                                  Intel C, C++ and Fortran compilers 10.1
                                  

Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                 C        F90    F90      C++   zlib  SZIP
                         parallel        parallel
Solaris2.10 32-bit       n        y      n        y     y     y
Solaris2.10 64-bit       n        y      n        y     y     y
IRIX64_6.5 32-bit        n        n      n        n     y     y
IRIX64_6.5 64-bit        n        y      y        y     y     y
Windows XP               n        y(15)  n(15)    y     y     y
Windows XP x64           n        y(15)  n(15)    y     y     y
Windows Vista            n        n      n        y     y     y
Mac OS X 10.5 Intel      n        y      n        y     y     y
AIX 5.3 32- and 64-bit   n        y      n        y     y     n
FreeBSD 6.3-STABLE 
32&64 bit                n        y      n        y     y     y
RedHat EL4       (3)  W  y(1)     y(10)  y(1)     y     y     y
RedHat EL4 Intel (3)  W  n        y      n        y     y     n
RedHat EL4 PGI   (3)  W  n        y      n        y     y     n
SuSe x86_64 gcc(3,12) W  y(2)     y(11)  y(2)     y     y     y
SuSe x86_64 Int(3,12) W  n        y(13)  n        y     y     n
SuSe x86_64 PGI(3,12) W  n        y(8)   n        y     y     y
Linux 2.6 SuSE ia64   C 
    Intel       (3,7)    y        y      y        y     y     n
Linux 2.6 SGI Altix 
    ia64 Intel    (3)    y        y      y        y     y     y
Linux 2.6 RHEL        C
    Lustre Intel  (5)    y(4)     y      y(4)     y     y     n
Cray XT3 2.0.41          y        y      y        y     y     n


Platform                 Shared  Shared    Shared    Thread-  
                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 32-bit       y       y         y         y        
Solaris2.10 64-bit       y       y         y         y        
IRIX64_6.5 32-bit        y       dna       y         y        
IRIX64_6.5 64-bit        y       y         n         y        
Windows XP               y       y(15)     y         y        
Windows XP x64           y       y(15)     y         y        
Windows Vista            y       n         n         y        
Mac OS X 10.5            y       n         y         n        
AIX 5.3 32- and 64-bit   n       n         n         n        
FreeBSD 6.2 32&64 bit    y       n         y         y        
RedHat EL4       (3)  W  y       y(10)     y         y        
RedHat EL4 Intel (3)  W  y       y         y         n        
RedHat EL4 PGI   (3)  W  y       y         y         n        
SuSe x86_64 GNU(3,12) W  y       y         y         y        
SuSe x86_64 Int(3,12) W  y       y         y         n        
SuSe x86_64 PGI(3,12) W  y       y         y         n        
Linux 2.4 SuSE        C
    ia64 C Intel (7)     y       y         y         n        
Linux 2.4 SGI Altix   C
    ia64 Intel           y                           n        
Linux 2.6 RHEL        C
    Lustre Intel (5)     y       y         y         n
Cray XT3 2.0.41          n       n         n         n

    Notes: (1)  Using mpich2 1.0.6.
           (2)  Using mpich2 1.0.7.
           (3)  Linux 2.6 with GNU, Intel, and PGI compilers, as indicated.  
                  W or C indicates workstation or cluster, respectively.
           (4)  Using mvapich2 0.9.8.
           (5)  Linux 2.6.9-42.0.10.  Xeon cluster with ELsmp_perfctr_lustre 
                  and Intel compilers
           (6)  Linux 2.4.21-32.0.1.  Xeon cluster with ELsmp_perfctr_lustre 
                  and Intel compilers
           (7)  Linux 2.4.21, SuSE_292.till.  Ia64 cluster with Intel compilers
           (8)  pgf90
           (9)  With Compaq Visual Fortran 6.6c compiler.
           (10) With PGI and Absoft compilers.
           (11) PGI and Intel compilers for both C and Fortran
           (12) AMD Opteron x86_64
           (13) ifort
           (14) Yes with C and Fortran, but not with C++
           (15) Using Visual Studio 2005 or Cygwin
           (16) Not tested for this release.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh and
  tools/h5copy/testh5copy.sh will fail some of its sub-tests. These sub-tests
  are expected to fail and should exit with a non-zero code but the yod
  command does not propagate the exit code of the executables. Yod always
  returns 0 if it can launch the executable.  The test suite shell expects
  a non-zero for this particular test, therefore it concludes the test has
  failed when it receives 0 from yod.  Skip all the "failing" test for now
  by changing them as following.

  ======== Original tools/h5ls/testh5ls.sh =========
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Change to ===============================
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ==================================================

  ======== Original tools/h5copy/testh5copy.sh =========
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  H5LSTEST $FILEOUT
  ======== Change to ===============================
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d grp_rename
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -v -s grp_dsets  -d /grp_rename/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_dsets -d /E/F/grp_dsets
  echo SKIP TOOLTEST_FAIL -i $TESTFILE -o $FILEOUT -vp -s /grp_nested -d /G/H/grp_nested
  echo SKIP H5LSTEST $FILEOUT
  ==================================================
  AKC - 2008/11/10

* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect seeing this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  AKC - 2008/05/28

* We have discovered two problems when running collective IO parallel HDF5 
  tests with chunking storage on the ChaMPIon MPI compiler on tungsten, a 
  Linux cluster at NCSA.

  Under some complex selection cases: 
  1) MPI_Get_element returns the wrong value.
  2) MPI_Type_struct also generates the wrong derived datatype and corrupt 
     data may be generated.
  These issues arise only when turning on collective IO with chunking storage 
  with some complex selections. We have not found these problems on other 
  MPI-IO compilers. If you encounter these problems, you may use independent 
  IO instead.

  To avoid this behavior, change the following line in your code
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
  to
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_INDEPENDENT);

  KY - 2007/08/24

* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* For LLNL, uP: both serial and parallel tests pass.  
  Zeus: Serial tests pass but parallel tests fail with a known problem in MPI.
  ubgl: Serial tests pass but parallel tests fail. 

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* On IRIX6.5, when the C compiler version is greater than 7.4, complicated
  MPI derived datatype code will work. However, the user should increase
  the value of the MPI_TYPE_MAX environment variable to some appropriate value 
  to use collective irregular selection code.  For example, the current 
  parallel HDF5 test needs to raise MPI_TYPE_MAX to 200,000 to pass the test. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system libraries on 
  Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platforms for serial mode. The parallel mode works fine with 
  this option.
  
  It is suggested that you do not use this option on these platforms
  during configuration.

* There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

* Information about building with PGI and Intel compilers is available in
  the INSTALL file sections 4.7 and 4.8.




%%%%1.8.1%%%%   


HDF5 version 1.8.1 released on Thu May 29 15:28:55 CDT 2008
================================================================================

INTRODUCTION
============

This document describes the differences between the HDF5-1.8.1 release 
and HDF5 1.8.0, and contains information on the platforms tested and known 
problems in HDF5-1.8.1.  For more details, see the files
HISTORY-1_0-1_8_0_rc3.txt and HISTORY-1_8.txt in the release_docs/ directory 
of the HDF5 source.

Links to the HDF5 1.8.1 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.1 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.1 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in the HDF5-1.8.x release series, including brief general 
descriptions of some new and modified APIs, are described in the "What's New 
in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.1 (current 
release) versus Release 1.8.0":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Support for new platforms and languages
- Bug Fixes since HDF5-1.8.0
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

        Configuration
        -------------
        - The lib/libhdf5.settings file contains much more configure
          information. (AKC - 2008/05/18)

        - The new configure option "--disable-sharedlib-rpath" disables 
          embedding the '-Wl,-rpath' information into executables when 
          shared libraries are produced, and instead solely relies on the 
          information in LD_LIBRARY_PATH. (MAM - 2008/05/15)

        - Configuration suite now uses Autoconf 2.61, Automake 1.10.1, and 
          Libtool 2.2.2 (MAM - 2008/05/01)

        Source code distribution
        ========================

        Library
        -------
        - None

        Parallel Library
        ----------------
        - None

        Tools
        -----
        - h5repack: Reinstated the -i and -o command line flags to specify 
          input and output files.  h5repack now understands both the old
          syntax (with -i and -o) and the new syntax introduced in Release
          1.8.0.  (PVN - 2008/05/23)
        - h5dump: Added support for external links, displaying the object that 
          an external link points to. (PVN - 2008/05/12)
        - h5dump: Added an option, -m, to allow user-defined formatting in the 
          output of floating point numbers. (PVN - 2008/05/06)
        - h5dump, in output of the -p option: Added effective data compression 
          ratio to the dataset storage layout output when a compression filter 
          has been applied to a dataset.  (PVN - 2008/05/01)

        F90 API
        ------
        New H5A, H5G, H5L, H5O, and H5P APIs to enable 1.8 features were
        added. See "Release 1.8.1 (current release) versus Release 1.8.0" in 
        the document "HDF5 Software Changes from Release to Release"
        (http://hdfgroup.org/HDF5/doc/ADGuide/Changes.html) for the 
        complete list of the new APIs.

        C++ API
        ------
        - None


Support for New Platforms, Languages, and Compilers
===================================================
        - Both serial and parallel HDF5 are supported for the Red Storm machine 
          which is a Cray XT3 system.

        - The Fortran library will work correctly if compiled with the -i8 
          flag.  This has been tested with the g95, PGI and Intel Fortran 
          compilers.


Bug Fixes since HDF5-1.8.0 
==========================

        Configuration
        -------------
        - None

        Source code distribution
        ========================

        Library
        -------
        - Chunking:  Chunks greater than 4GB are disallowed. 
          (QAK - 2008/05/16)
        - Fixed the problem with searching for a target file when following 
          an external link.  The search pattern will depend on whether the 
          target file's pathname is an absolute or a relative path. 
          Please see the H5Lcreate_external description in the "HDF5 
          Reference Manual" (http://hdfgroup.org/HDF5/doc/RM/RM_H5L.html).
          (VC - 2008/04/08)
        - Fixed possible file corruption bug when encoding datatype
          descriptions for compound datatypes whose size was between
          256 and 511 bytes and the file was opened with the "use the
          latest format" property enabled (with H5Pset_libver_bounds).
          (QAK - 2008/03/13)
        - Fixed bug in H5Aget_num_attrs() routine to correctly handle an 
          invalid location identifier.  (QAK - 2008/03/11)

        Parallel Library
        ----------------
        - None

        Tools
        -----
        - Fixed bug in h5diff that prevented datasets and attributes with
          variable-length string elements from comparing correctly.
          (QAK - 2008/02/28)
        - Fixed bug in h5dump that caused binary output to be made only for 
          the first dataset, when several datasets were requested.
          (PVN - 2008/04/07)

        F90 API
        ------
        - The h5tset(get)_fields subroutines were missing the parameter to 
          specify a sign position; fixed.  (EIP - 2008/05/23)
        - Many APIs were fixed to work with the 8-byte integers in Fortran vs.
          4-byte integers in C. This change is trasparent to user applications.

        C++ API
        ------
        - The class hierarchy was revised to address the problem reported
          in bugzilla #1068, Attribute should not be derived from base
          class H5Object.  Classes AbstractDS was moved out of H5Object.
          Class Attribute now multiply inherits from IdComponent and
          AbstractDs and class DataSet from H5Object and AbstractDs.
          In addition, data member IdComponent::id was moved into subclasses:
          Attribute, DataSet, DataSpace, DataType, H5File, Group, and PropList.
          (BMR - 2008/05/20)
	- IdComponent::dereference was incorrect; it was changed from:
		void IdComponent::dereference(IdComponent& obj, void* ref)
	  to:
		void H5Object::dereference(H5File& h5file, void* ref)
		void H5Object::dereference(H5Object& obj, void* ref)
	  (BMR - 2008/05/20)
        - Revised Attribute::write and Attribute::read wrappers to handle
          memory allocation/deallocation properly. (bugzilla 1045)
          (BMR - 2008/05/20)


Platforms Tested
================
The following platforms and compilers have been tested for this release.

    Cray XT3 (2.0.41)             cc (pgcc) 7.1-4
    (red storm)                   ftn (pgf90) 7.1-4
				  CC (pgCC) 7.1-4
                                  mpicc 1.0.2
                                  mpif90 1.0.2

    FreeBSD 6.2-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.1 20080123
                                  g++ 4.2.1 20080123
                                  gfortran 4.2.1 20070620

    FreeBSD 6.2-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.1 20080123
                                  g++ 4.2.1 20080123
                                  gfortran 4.2.1 20080123

    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.4.4m
                                  F90 MIPSpro 7.4.4m 
                                  C++ MIPSpro cc 7.4.4m

    Linux 2.6.9 (RHEL4)           Intel 10.0 compilers
    (abe.ncsa.uiuc.edu)

    Linux 2.4.21-47               gcc 3.2.3 20030502
    (osage)

    Linux 2.6.9-42.0.10           gcc,g++ 3.4.6 20060404, G95 (GCC 4.0.3) 
    (kagiso)                      PGI 7.1-6 (pgcc, pgf90, pgCC)
                                  Intel 9.1 (icc, ifort, icpc)

    Linux 2.6.16.27 x86_64 AMD    gcc 4.1.0 (SuSE Linux), g++ 4.1.0, 
    (smirom)                          g95 (GCC 4.0.3)
                                  PGI 7.1-6 (pgcc, pgf90, pgCC)
                                  Intel 9.1 (icc, ifort, icpc)

    Linux 2.6.5-7.252.1-rtgfx #1  Intel(R) C++ Version 9.0
          SMP ia64                Intel(R) Fortran Itanium(R) Version 9.0 
    (cobalt)                      SGI MPI

    SunOS 5.8 32,46               Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 95 6.2
                                  Sun WorkShop 6 update 2 C++ 5.3

    SunOS 5.10                    cc: Sun C 5.8 
    (linew)                       f90: Sun Fortran 95 8.2 
                                  CC: Sun C++ 5.8 

    Xeon Linux 2.4.21-32.0.1.ELsmp-perfctr-lustre
    (tungsten)                    gcc 3.2.2 20030222
                                  Intel(R) C++ Version 9.0
                                  Intel(R) Fortran Compiler Version 9.0

    IA-64 Linux 2.4.21.SuSE_309.tg1 ia64
    (NCSA tg-login)               gcc 3.2.2
                                  Intel(R) C++ Version 8.1
                                  Intel(R) Fortran Compiler Version 8.1
                                  mpich-gm-1.2.6..14b-intel-r2

    Intel 64 Linux 2.6.9-42.0.10.EL_lustre-1.4.10.1smp
    (abe)                         gcc 3.4.6 20060404
                                  Intel(R) C++ Version 10.0
                                  Intel (R) Fortran Compiler Version 10.0
                                  mvapich2-0.9.8p2patched-intel-ofed-1.2

    Windows XP                    Visual Studio .NET
                                  Visual Studio 2005 w/ Intel Fortran 9.1
                                  Cygwin(native gcc compiler and g95)
                                  MinGW(native gcc compiler and g95)

    Windows XP x64                Visual Studio 2005 w/ Intel Fortran 9.1

    Windows Vista                 Visual Studio 2005

    MAC OS  10.5.2 (Intel)        i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1
                                  GNU Fortran (GCC) 4.3.0 20070810
                                  G95 (GCC 4.0.3 (g95 0.91!) Apr 24 2008)


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                 C        F90    F90      C++   zlib  SZIP
                         parallel        parallel
SunOS5.10 64-bit         n        y      n        y     y     y
SunOS5.10 32-bit         n        y      n        y     y     y
IRIX64_6.5 64-bit        n        y      y        y     y     y
IRIX64_6.5 32-bit        n        n      n        n     y     y
Windows XP               n        y(15)  n(15)    y     y     y
Windows XP x64           n        y(15)  n(15)    y     y     y
Windows Vista            n        n      n        y     y     y
Mac OS X 10.5 Intel      n        y      n        y     y     y
FreeBSD 4.11             n        n      n        y     y     y
RedHat EL3  W       (3)  y(1)     y(10)  y(1)     y     y     y
RedHat EL3  W Intel (3)  n        y      n        y     y     n
RedHat EL3  W PGI   (3)  n        y      n        y     y     n
SuSe x86_64 gcc  (3,12)  y(2)     y(11)  y(2)     y     y     y
SuSe x86_64 Int  (3,12)  n        y(13)  n        y     y     n
SuSe x86_64 PGI  (3,12)  n        y(8)   n        y     y     y
Linux 2.4 Xeon C 
    Lustre Intel  (3,6)  n        y      n        y     y     n
Linux 2.6 SuSE ia64 C 
    Intel         (3,7)  y        y      y        y     y     n
Linux 2.6 SGI Altix 
    ia64 Intel      (3)  y        y      y        y     y     y
Linux 2.6 RHEL C
    Lustre Intel    (5)  y(4)     y      y(4)     y     y     n
Cray XT3 2.0.41          y        y      y        y     y     n


Platform                 Shared  Shared    Shared    Thread-  
                         C libs  F90 libs  C++ libs  safe     
Solaris2.10 64-bit       y       y         y         y        
Solaris2.10 32-bit       y       y         y         y        
IRIX64_6.5 64-bit        y       y         n         y        
IRIX64_6.5 32-bit        y       dna       y         y        
Windows XP               y       y(15)     y         y        
Windows XP x64           y       y(15)     y         y        
Windows Vista            y       n         n         y        
Mac OS X 10.3            y                           n        
FreeBSD 4.11             y       n         y         y        
RedHat EL3  W       (3)  y       y(10)     y         y        
RedHat EL3  W Intel (3)  y       y         y         n        
RedHat EL3  W PGI   (3)  y       y         y         n        
SuSe x86_64 W GNU (3,12) y       y         y         y        
SuSe x86_64 W Int (3,12) y       y         y         n        
SuSe x86_64 W PGI (3,12) y       y         y         n        
Linux 2.4 Xeon C 
    Lustre Intel    (6)  y       y         y         n        
Linux 2.4 SuSE 
    ia64 C Intel    (7)  y       y         y         n        
Linux 2.4 SGI Altix 
    ia64 Intel           y                           n        
Linux 2.6 RHEL C
    Lustre Intel    (5)  y        y        y         n
Cray XT3 2.0.41          n       n         n         n        n

    Notes: (1)  Using mpich2 1.0.6.
           (2)  Using mpich2 1.0.7.
           (3)  Linux 2.6 with GNU, Intel, and PGI compilers, as indicated.  
                  W or C indicates workstation or cluster, respectively.
           (4)  Using mvapich2 0.9.8.
           (5)  Linux 2.6.9-42.0.10.  Xeon cluster with ELsmp_perfctr_lustre 
                  and Intel compilers
           (6)  Linux 2.4.21-32.0.1.  Xeon cluster with ELsmp_perfctr_lustre 
                  and Intel compilers
           (7)  Linux 2.4.21, SuSE_292.till.  Ia64 cluster with Intel compilers
           (8)  pgf90
           (9)  With Compaq Visual Fortran 6.6c compiler.
           (10) With PGI and Absoft compilers.
           (11) PGI and Intel compilers for both C and Fortran
           (12) AMD Opteron x86_64
           (13) ifort
           (14) Yes with C and Fortran, but not with C++
           (15) Using Visual Studio 2005 or Cygwin
           (16) Not tested for this release.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* For Red Storm, a Cray XT3 system, the yod command sometimes gives the
  message,  "yod allocation delayed for node recovery".  This interferes with
  test suites that do not expect seeing this message.  See the section of "Red
  Storm" in file INSTALL_parallel for a way to deal with this problem.
  AKC - 2008/05/28

* For Red Storm, a Cray XT3 system, the tools/h5ls/testh5ls.sh will fail on
  the test "Testing h5ls -w80 -r -g tgroup.h5" fails.  This test is
  expected to fail and exit with a non-zero code but the yod command does
  not propagate the exit code of the executables. Yod always returns 0 if it
  can launch the executable.  The test suite shell expects a non-zero for
  this particular test, therefore it concludes the test has failed when it
  receives 0 from yod.  To bypass this problem for now, change the following
  lines in the tools/h5ls/testh5ls.sh.
  ======== Original =========
  # The following combination of arguments is expected to return an error message
  # and return value 1
  TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== Skip the test =========
  echo SKIP TOOLTEST tgroup-1.ls 1 -w80 -r -g tgroup.h5
  ======== end of bypass ========
  AKC - 2008/05/28

* We have discovered two problems when running collective IO parallel HDF5 
  tests with chunking storage on the ChaMPIon MPI compiler on tungsten, a 
  Linux cluster at NCSA.

  Under some complex selection cases: 
  1) MPI_Get_element returns the wrong value.
  2) MPI_Type_struct also generates the wrong derived datatype and corrupt 
     data may be generated.
  These issues arise only when turning on collective IO with chunking storage 
  with some complex selections. We have not found these problems on other 
  MPI-IO compilers. If you encounter these problems, you may use independent 
  IO instead.

  To avoid this behavior, change the following line in your code
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
  to
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_INDEPENDENT);

  KY - 2007/08/24

* For SNL, spirit/liberty/thunderbird: The serial tests pass but parallel
  tests failed with MPI-IO file locking message. AKC - 2007/6/25

* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* For LLNL, uP: both serial and parallel tests pass.  
  Zeus: Serial tests pass but parallel tests fail with a known problem in MPI.
  ubgl: Serial tests pass but parallel tests fail. 

* Configuring with --enable-debug=all produces compiler errors on most
  platforms:  Users who want to run HDF5 in debug mode should use
  --enable-debug rather than --enable-debug=all to enable debugging
  information on most modules.

* On Mac OS 10.4, test/dt_arith.c has some errors in conversion from long
  double to (unsigned) long long and from (unsigned) long long to long double. 

* On Altix SGI with Intel 9.0, testmeta.c would not compile with -O3
  optimization flag.

* On VAX, the Scaleoffset filter is not supported.  The Scaleoffset filter 
  supports only the IEEE standard for floating-point data; it cannot be applied 
  to HDF5 data generated on VAX. 

* On Cray X1, a lone colon on the command line of h5dump --xml (as in
  the testh5dumpxml.sh script) is misinterpereted by the operating system
  and causes an error.

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* On IRIX6.5, when the C compiler version is greater than 7.4, complicated
  MPI derived datatype code will work. However, the user should increase
  the value of the MPI_TYPE_MAX environment variable to some appropriate value 
  to use collective irregular selection code.  For example, the current 
  parallel HDF5 test needs to raise MPI_TYPE_MAX to 200,000 to pass the test. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculation of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* For version 6 (6.02 and 6.04) of the Portland Group compiler on the AMD 
  Opteron processor, there is a bug in the compiler for optimization(-O2).  
  The library failed in several tests, all related to the MULTI driver.  
  The problem has been reported to the vendor.  

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system libraries on 
  Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platforms for serial mode. The parallel mode works fine with 
  this option.
  
  It is suggested that you do not use this option on these platforms
  during configuration.

* With the gcc 2.95.2 compiler, HDF5 uses the `-ansi' flag during
  compilation. The ANSI version of the compiler complains about not being
  able to handle the `long long' datatype with the warning:

        warning: ANSI C does not support `long long'
  
  This warning is innocuous and can be safely ignored.

* The ./dsets tests fail on the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The HDF5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Not all platforms behave correctly with Szip's shared libraries. Szip is
  disabled in these cases, and a message is relayed at configure time. Static
  libraries should be working on all systems that support Szip and should be
  used when shared libraries are unavailable. 

  There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

* On some platforms that use Intel and Absoft compilers to build the HDF5 
  Fortran library, compilation may fail for fortranlib_test.f90, fflush1.f90 
  and fflush2.f90 complaining about the exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error).

* Information about building with PGI and Intel compilers is available in
  the INSTALL file sections 4.7 and 4.8.

* On at least one system, SDSC DataStar, the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run 
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as 
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.  

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to 
  the configure and build.  This will cause "make check" to continue after 
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it 
  for your installation.  

  Observe that the basic idea is to insert the script as the first item 
  on the command line which executes the the test.  The script then 
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF5 make files and test scipts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the 
  script prior to running configure for parallel builds.  Remember to 
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can 
  prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.

* H5Ocopy() does not copy reg_ref attributes correctly when shared-message
  is turn on. The value of the reference in the destination attriubte is
  wrong. This H5Ocopy problem will affect the h5copy tool.

* In the C++ API, it appears that there are bugs in Attribute::write/read
  and DataSet::write/read for fixed- and variable-len strings.  The problems
  are being worked on and a patch will be provided when the fixes are
  available.


%%%%1.8.0%%%%   


HDF5 version 1.8.0 released on Tue Feb 12 20:41:19 CST 2008
================================================================================

INTRODUCTION
============

This document describes the differences between the HDF5-1.6.x release series
and HDF5 1.8.0, and contains information on the platforms tested and known 
problems in HDF5-1.8.0.  For more details, see the HISTORY-1_0-1_8_0_rc3.txt
file in the 
release_docs/ directory of the HDF5 source.

Links to the HDF5 1.8.0 source code, documentation, and additional materials
can be found on the HDF5 web page at:

     http://www.hdfgroup.org/products/hdf5/

The HDF5 1.8.0 release can be obtained from:

     http://www.hdfgroup.org/HDF5/release/obtain5.html

User documentation for 1.8.0 can be accessed directly at this location: 

     http://www.hdfgroup.org/HDF5/doc/

New features in 1.8.0, including brief general descriptions of some new 
and modified APIs, are described in the "What's New in 1.8.0?" document:

     http://www.hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html

All new and modified APIs are listed in detail in the "HDF5 Software Changes 
from Release to Release" document, in the section "Release 1.8.0 (current 
release) versus Release 1.6.x":

     http://www.hdfgroup.org/HDF5/doc/ADGuide/Changes.html

If you have any questions or comments, please send them to the HDF Help Desk:

     help@hdfgroup.org


CONTENTS
========

- New Features
- Removed Feature
- Support for new platforms and languages
- Bug Fixes since HDF5-1.6.0
- Platforms Tested
- Supported Configuration Features Summary
- Known Problems


New Features
============

   HDF5 Release 1.8.0 is a major release with many changes and new features.

   New format and interface features discussed in the "What's New in 
   HDF5 1.8.0" document include the following:

       Enhanced group object management
       Enhanced attribute management and more efficient meta data handling
       Expanded datatype features
       Creation order tracking and indexing
       Improved meta data caching and cache control
       UTF-8 encoding
       New I/O filters: n-bit and scale+offset compression
       New link (H5L) and object (H5O) interfaces and features
       External and user-defined links
       New high-level APIs: 
           HDF5 Packet Table (H5PT) and HDF5 Dimension Scale (H5DS)
       C++ and Fortran interfaces for older high-level APIs:
           H5Lite (H5LT), H5Image (H5IM), and H5Table (H5TB)
       New and improved tools
       And more...

       http://hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html


    New APIs associated with these features, other interface changes 
    (e.g., ENUM and struct definitions), and new library configuration flags
    are listed in the "Release 1.8.0 (current release) versus Release 1.6.x" 
    section of "HDF5 Software Changes from Release to Release."

        http://hdfgroup.org/HDF5/doc/ADGuide/Changes.html

Compatibility
-------------
    Many HDF5 users and user communities have existing applications that 
    they may wish to port to Release 1.8.0.  Alternatively, some users may 
    wish to take advantage of Release 1.8.0's improved performance without
    having to port such applications.  To facilitate managing application
    compatibility and porting applications from release to release, the HDF 
    Team has implemented the following features:
        Individually-configurable macros that selectively map common 
            interface names to the old and new interfaces
        Library configuration options to configure the macro mappings

    Two related documents accompany this release:
        "API Compatibility Macros in HDF5" discusses the specifics of the 
        new individually-configurable macros and library configuration 
        options.
        http://hdfgroup.org/HDF5/doc/RM/APICompatMacros.html
 
        "New Features in HDF5 Release 1.8.0 and Backward/Forward Format
        Compatibility Issues" discusses each new feature with regard to 
        its impact on format compatibility.
        http://hdfgroup.org/HDF5/doc/ADGuide/CompatFormat180.html

Referenced documents
--------------------
    http://hdfgroup.org/HDF5/doc/ADGuide/WhatsNew180.html
        "What's New in HDF5 1.8.0"

    http://hdfgroup.org/HDF5/doc/ADGuide/Changes.html
        The "Release 1.8.0 (current release) versus Release 1.6.x "
        section in "HDF5 Software Changes from Release to Release"

    http://hdfgroup.org/HDF5/doc/RM/APICompatMacros.html
        "API Compatibility Macros in HDF5"

    http://hdfgroup.org/HDF5/doc/ADGuide/CompatFormat180.html
        "New Features in HDF5 Release 1.8.0 and Backward/Forward Format
        Compatibility Issues"


Removed Feature
===============
The stream virtual file driver (H5FD_STREAM) have been removed in this 
release. This affects the functions H5Pset_fapl_stream and H5Pget_fapl_stream 
and the constant H5FD_STREAM.

This virtual file driver will be available at 
http://hdf5-addons.origo.ethz.ch/. Note that at the time of this release, 
the transition is still in progress; the necessary integration tools may 
not be available when HDF5 Release 1.8.0 first comes out.


Support for New Platforms, Languages, and Compilers
===================================================
    - Support for Open VMS 7.3 was added.


Bug Fixes since HDF5-1.6.0 
==========================
    This release contains numerous bug fixes. For details, see the 
    "Changes from 1.6.0 to 1.8.0-rc3" section of the HISTORY.txt file for
    this release.


Platforms Tested
================
The following platforms and compilers have been tested for for this release.

    AIX 5.2 (32/64 bit)           xlc 8.0.0.11
                                  xlC 8.0
                                  xlf 10.01.0000.0 
                                  mpcc_r 6.0.0.8
                                  mpxlf_r 8.1.1.7

    FreeBSD 6.2-STABLE i386       gcc 3.4.6 [FreeBSD] 20060305
    (duty)                        g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.1 20080123
                                  g++ 4.2.1 20080123
                                  gfortran 4.2.1 20070620

    FreeBSD 6.2-STABLE amd64      gcc 3.4.6 [FreeBSD] 20060305
    (liberty)                     g++ 3.4.6 [FreeBSD] 20060305
                                  gcc 4.2.1 20080123
                                  g++ 4.2.1 20080123
                                  gfortran 4.2.1 20080123

    IRIX64 6.5 (64 & n32)         MIPSpro cc 7.4.4m
                                  F90 MIPSpro 7.4.4m 
                                  C++ MIPSpro cc 7.4.4m

    Linux 2.6.9 (RHEL4)           Intel 10.0 compilers
    (abe.ncsa.uiuc.edu)

    Linux 2.4.21-47               gcc 3.2.3 20030502
    (osage)

    Linux 2.6.9-42.0.10           gcc 3.4.6 20060404
    (kagiso)                      PGI 7.0-7 (pgcc, pgf90, pgCC)
                                  Intel 9.1 (icc, ifort, icpc)

    Linux 2.6.16.27 x86_64 AMD    gcc 4.1.0 (SuSE Linux), g++ 4.1.0, 
    (smirom)                          g95 (GCC 4.0.3)
                                  PGI 6.2-5 (pgcc, pgf90, pgCC)
                                  Intel 9.1 (icc, iort, icpc)

    Linux 2.6.5-7.252.1-rtgfx #1  Intel(R) C++ Version 9.0
          SMP ia64                Intel(R) Fortran Itanium(R) Version 9.0 
    (cobalt)                      SGI MPI

    SunOS 5.8 32,46               Sun WorkShop 6 update 2 C 5.3
     (Solaris 2.8)                Sun WorkShop 6 update 2 Fortran 95 6.2
                                  Sun WorkShop 6 update 2 C++ 5.3

    SunOS 5.10                    cc: Sun C 5.8 
    (linew)                       f90: Sun Fortran 95 8.2 
                                  CC: Sun C++ 5.8 

    Xeon Linux 2.4.21-32.0.1.ELsmp-perfctr-lustre
    (tungsten)                    gcc 3.2.2 20030222
                                  Intel(R) C++ Version 9.0
                                  Intel(R) Fortran Compiler Version 9.0

    IA-64 Linux 2.4.21.SuSE_292.til1 ia64
    (NCSA tg-login)               gcc 3.2.2
                                  Intel(R) C++ Version 8.1
                                  Intel(R) Fortran Compiler Version 8.1
                                  mpich-gm-1.2.5..10-intel-r2

    Windows XP                    Visual Studio .NET
                                  Visual Studio 2005 w/ Intel Fortran 9.1
                                  Cygwin(native gcc compiler and g95)
                                  MinGW(native gcc compiler and g95)

    Windows XP x64                Visual Studio 2005 w/ Intel Fortran 9.1

    Windows Vista                 Visual Studio 2005

    MAC OS  10.4 (Intel)          gcc i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 
                                  G95 (GCC 4.0.3 (g95 0.91!) Nov 21 2006)

    Alpha Open VMS 7.3            Compaq C V6.5-001-48BCD
                                  HP Fortran V7.6-3276
                                  Compaq C++ V6.5-004


Supported Configuration Features Summary
========================================

    In the tables below
          y   = tested and supported
          n   = not supported or not tested in this release
          x   = not working in this release
          dna = does not apply
          ( ) = footnote appears below second table
          <blank> = testing incomplete on this feature or platform 

Platform                 C        F90    F90      C++   zlib  SZIP
                         parallel        parallel
SunOS5.8 64-bit          n        y      n        y     y     y
SunOS5.8 32-bit          n        y      n        y     y     y
SunOS5.10 64-bit         y(1)     y      n        y     y     y
SunOS5.10 32-bit         y(1)     y      n        y     y     y
IRIX64_6.5 64-bit        n        y      y        y     y     y
IRIX64_6.5 32-bit        n        n      n        n     y     y
AIX-5.2  32-bit          y        y      y        y     y     y
AIX-5.2  64-bit          y        y      y        y     y     y
Windows XP               n        y(15)  n(15)    y     y     y
Windows XP x64           n        y(15)  n(15)    y     y     y
Windows Vista            n        n      n        y     y     y
Mac OS X 10.4 PowerPC    n               n
Mac OS X 10.4 Intel      n        y      n        y     y     y
FreeBSD 4.11             n        n      n        y     y     y
RedHat EL3  W       (3)  y(1a)    y(10)  y(1a)    y     y     y
RedHat EL3  W Intel (3)  n        y      n        y     y     n
RedHat EL3  W PGI   (3)  n        y      n        y     y     n
SuSe x86_64 gcc  (3,12)  y(1a)    y(11)  n        y     y     y
SuSe x86_64 Int  (3,12)  n        y(13)  n        y     y     n
SuSe x86_64 PGI  (3,12)  n        y(8)   n        y     y     y
Linux 2.4 Xeon C 
    Lustre Intel  (3,6)  n        y      n        y     y     n
Linux 2.6 SuSE ia64 C 
    Intel         (3,7)  y        y      y        y     y     n
Linux 2.6 SGI Altix 
    ia64 Intel      (3)  y        y      y        y     y     y
Alpha OpenVMS 7.3.2      n        y      n        y     n     n



Platform                 Shared  Shared    Shared    static-  Thread-  
                         C libs  F90 libs  C++ libs  exec     safe     
Solaris2.8 64-bit        y       y         y         x        y        
Solaris2.8 32-bit        y       y         y         x        y        
Solaris2.10 64-bit       y                           x        y        
Solaris2.10 32-bit       y                           x        y        
IRIX64_6.5 64-bit        y       y         n         y        y        
IRIX64_6.5 32-bit        y       dna       y         y        y        
AIX-5.2 & 5.3 32-bit     n       n         n         y        n        
AIX-5.2 & 5.3 64-bit     n       n         n         y        n        
Windows XP               y       y(15)     y         y        y        
Windows XP x64           y       y(15)     y         y        y        
Windows Vista            y       n         n         y        y        
Mac OS X 10.3            y                           y        n        
FreeBSD 4.11             y       n         y         y        y        
RedHat EL3  W       (3)  y       y(10)     y         y        y        
RedHat EL3  W Intel (3)  y       y         y         y        n        
RedHat EL3  W PGI   (3)  y       y         y         y        n        
SuSe x86_64 W GNU (3,12) y       y         y         y        y        
SuSe x86_64 W Int (3,12) y       y         y         y(14)    n        
SuSe x86_64 W PGI (3,12) y       y         y         y(14)    n        
Linux 2.4 Xeon C 
    Lustre Intel    (6)  y       y         y         y        n        
Linux 2.4 SuSE 
    ia64 C Intel    (7)  y       y         y         y        n        
Linux 2.4 SGI Altix 
    ia64 Intel           y                           y        n        
Alpha OpenVMS 7.3.2      n       n         n         y        n        

    Notes: (1)  Using mpich 1.2.6.
           (1a) Using mpich2 1.0.6.
           (2)  Using mpt and mpich 1.2.6.
           (3)  Linux 2.6 with GNU, Intel, and PGI compilers, as indicated.  
                  W or C indicates workstation or cluster, respectively.

           (6)  Linux 2.4.21-32.0.1.  Xeon cluster with ELsmp_perfctr_lustre 
                  and Intel compilers
           (7)  Linux 2.4.21, SuSE_292.till.  Ia64 cluster with Intel
compilers
           (8)  pgf90
           (9)  With Compaq Visual Fortran 6.6c compiler.
           (10) With PGI and Absoft compilers.
           (11) PGI and Intel compilers for both C and Fortran
           (12) AMD Opteron x86_64
           (13) ifort
           (14) Yes with C and Fortran, but not with C++
	   (15) Using Visual Studio 2005 or Cygwin
           (16) Not tested for this release.
    Compiler versions for each platform are listed in the preceding
    "Platforms Tested" table.


Known Problems
==============
* We have discovered two problems when running collective IO parallel HDF5 
  tests with chunking storage on the ChaMPIon MPI compiler on tungsten, a 
  Linux cluster at NCSA.

  Under some complex selection cases: 
  1) MPI_Get_element returns the wrong value.
  2) MPI_Type_struct also generates the wrong derived datatype and corrupt 
     data may be generated.
  These issues arise only when turning on collective IO with chunking storage 
  with some complex selections. We have not found these problems on other 
  MPI-IO compilers. If you encounter these problems, you may use independent 
  IO instead.

  To avoid this behavior, change the following line in your code
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);

  to
      H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_INDEPENDENT);

  KY - 2007/08/24

* For SNL, spirit/liberty/thunderbird: The serial tests pass but parallel
  tests failed with MPI-IO file locking message. AKC - 2007/6/25

* On Intel 64 Linux cluster (RH 4, Linux 2.6.9) with Intel 10.0 compilers, 
  use -mp -O1 compilation flags to build the libraries. A higher level of 
  optimization causes failures in several HDF5 library tests. 

* For SNL, Red Storm: Only parallel HDF5 is supported.  The serial tests pass
  when run against the parallel library; the parallel tests also pass, but
  with lots of non-fatal error messages.

* For LLNL, uP: both serial and parallel tests pass.  
  Zeus: Serial tests pass but parallel tests fail with a known problem in MPI.
  ubgl: Serial tests pass but parallel tests fail. 

* On SUN 5.10 C++, testing fails in the "Testing Shared Datatypes with 
  Attributes" test. 

* Configuring with --enable-debug=all produces compiler errors on most
  platforms:  Users who want to run HDF5 in debug mode should use
  --enable-debug rather than --enable-debug=all to enable debugging
  information on most modules.

* On Mac OS 10.4, test/dt_arith.c has some errors in conversion from long
  double to (unsigned) long long and from (unsigned) long long to long double. 

* On Altix SGI with Intel 9.0, testmeta.c would not compile with -O3
  optimization flag.

* On VAX, the Scaleoffset filter is not supported. The filter cannot be 
  applied to HDF5 data generated on VAX. The Scaleoffset filter only supports 
  the IEEE standard for floating-point data.

* On Cray X1, a lone colon on the command line of h5dump --xml (as in
  the testh5dumpxml.sh script) is misinterpereted by the operating system
  and causes an error.

* On mpich 1.2.5 and 1.2.6, if more than two processes contribute no IO and 
  the application asks to do collective IO, we have found that when using 4 
  processors, a simple collective write will sometimes be hung. This can be 
  verified with t_mpi test under testpar.

* On IRIX6.5, when the C compiler version is greater than 7.4, complicated
  MPI derived datatype code will work. However, the user should increase
  the value of the MPI_TYPE_MAX environment variable to some appropriate value 
  to use collective irregular selection code.  For example, the current 
  parallel HDF5 test needs to raise MPI_TYPE_MAX to 200,000 to pass the test. 

* A dataset created or rewritten with a v1.6.3 library or after cannot be read 
  with the v1.6.2 library or before when the Fletcher32 EDC filter is enabled.
  There was a bug in the calculating code of the Fletcher32 checksum in the 
  library before v1.6.3; the checksum value was not consistent between big-
  endian and little-endian systems.  This bug was fixed in Release 1.6.3.  
  However, after fixing the bug, the checksum value was no longer the same as 
  before on little-endian system.  Library releases after 1.6.4 can still read 
  datasets created or rewritten with an HDF5 library of v1.6.2 or before.  
  SLU - 2005/6/30

* For version 6 (6.02 and 6.04) of the Portland Group compiler on the AMD 
  Opteron processor, there is a bug in the compiler for optimization(-O2).  
  The library failed in several tests, all related to the MULTI driver.  
  The problem has been reported to the vendor.  

* On IBM AIX systems, parallel HDF5 mode will fail some tests with error
  messages like "INFO: 0031-XXX ...".  This is from the command `poe'.
  Set the environment variable MP_INFOLEVEL to 0 to minimize the messages
  and run the tests again.

  The tests may fail with messages like "The socket name is already in use",  
  but HDF5 does not use sockets.  This failure is due to problems with the 
  poe command trying to set up the debug socket.  To resolve this problem, 
  check to see whether there are many old /tmp/s.pedb.* files staying around.  
  These are sockets used by the poe command and left behind due to failed 
  commands.  First, ask your system administrator to clean them out.  
  Lastly, request IBM to provide a means to run poe without the debug socket.

* The --enable-static-exec configure flag fails to compile for Solaris
  platforms. This is due to the fact that not all of the system libraries on 
  Solaris are available in a static format.

  The --enable-static-exec configure flag also fails to correctly compile
  on IBM SP2 platform for the serial mode. The parallel mode works fine with 
  this option.
  
  It is suggested that you do not use this option on these platforms
  during configuration.

* With the gcc 2.95.2 compiler, HDF5 uses the `-ansi' flag during
  compilation. The ANSI version of the compiler complains about not being
  able to handle the `long long' datatype with the warning:

        warning: ANSI C does not support `long long'
  
  This warning is innocuous and can be safely ignored.

* The ./dsets tests fail on the TFLOPS machine if the test program,
  dsets.c, is compiled with the -O option.  The HDF5 library still works
  correctly with the -O option.  The test program works fine if it is
  compiled with -O1 or -O0.  Only -O (same as -O2) causes the test
  program to fail.

* Not all platforms behave correctly with Szip's shared libraries. Szip is
  disabled in these cases, and a message is relayed at configure time. Static
  libraries should be working on all systems that support Szip and should be
  used when shared libraries are unavailable. 

  There is also a configure error on Altix machines that incorrectly reports 
  when a version of Szip without an encoder is being used.

* On some platforms that use Intel and Absoft compilers to build the HDF5 
  Fortran library, compilation may fail for fortranlib_test.f90, fflush1.f90 
  and fflush2.f90 complaining about the exit subroutine. Comment out the line 
  IF (total_error .ne. 0) CALL exit (total_error).

* Information about building with PGI and Intel compilers is available in
  the INSTALL file sections 4.7 and 4.8.

* On at least one system, SDSC DataStar, the scheduler (in this case
  LoadLeveler) sends job status updates to standard error when you run 
  any executable that was compiled with the parallel compilers.

  This causes problems when running "make check" on parallel builds, as 
  many of the tool tests function by saving the output from test runs,
  and comparing it to an exemplar.  

  The best solution is to reconfigure the target system so it no longer
  inserts the extra text.  However, this may not be practical.

  In such cases, one solution is to "setenv HDF5_Make_Ignore yes" prior to 
  the configure and build.  This will cause "make check" to continue after 
  detecting errors in the tool tests.  However, in the case of SDSC DataStar,
  it also leaves you with some 150 "failed" tests to examine by hand.

  A second solution is to write a script to run serial tests and filter
  out the text added by the scheduler.  A sample script used on SDSC
  DataStar is given below, but you will probably have to customize it 
  for your installation.  

  Observe that the basic idea is to insert the script as the first item 
  on the command line which executes the the test.  The script then 
  executes the test and filters out the offending text before passing
  it on.

        #!/bin/csh

        set STDOUT_FILE=~/bin/serial_filter.stdout
        set STDERR_FILE=~/bin/serial_filter.stderr

        rm -f $STDOUT_FILE $STDERR_FILE

        ($* > $STDOUT_FILE) >& $STDERR_FILE

        set RETURN_VALUE=$status

        cat $STDOUT_FILE

        tail +3 $STDERR_FILE

        exit $RETURN_VALUE

  You get the HDF5 make files and test scipts to execute your filter script
  by setting the environment variable "RUNSERIAL" to the full path of the 
  script prior to running configure for parallel builds.  Remember to 
  "unsetenv RUNSERIAL" before running configure for a serial build.

  Note that the RUNSERIAL environment variable exists so that we can 
  can prefix serial runs as necessary on the target system.  On DataStar,
  no prefix is necessary.  However on an MPICH system, the prefix might
  have to be set to something like "/usr/local/mpi/bin/mpirun -np 1" to
  get the serial tests to run at all.

  In such cases, you will have to include the regular prefix in your
  filter script.

* H5Ocopy() does not copy reg_ref attributes correctly when shared-message
  is turn on. The value of the reference in the destination attriubte is
  wrong. This H5Ocopy problem will affect the h5copy tool.