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author | HDF Admin <hdfadmin@ncsa.uiuc.edu> | 2002-06-27 18:42:49 (GMT) |
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committer | HDF Admin <hdfadmin@ncsa.uiuc.edu> | 2002-06-27 18:42:49 (GMT) |
commit | c973d3145d281cae9cb0520dd5844375f822c0ec (patch) | |
tree | 6cd2413f29b3d8225926eebbcd61afe26e79e1d9 /doc | |
parent | 73a31db961cfc749fb0f1cf637c8da1610c66779 (diff) | |
download | hdf5-c973d3145d281cae9cb0520dd5844375f822c0ec.zip hdf5-c973d3145d281cae9cb0520dd5844375f822c0ec.tar.gz hdf5-c973d3145d281cae9cb0520dd5844375f822c0ec.tar.bz2 |
[svn-r5722] Snapshot version 1.4 release 4 (pre5)
Diffstat (limited to 'doc')
-rw-r--r-- | doc/html/ADGuide/RELEASE.txt | 142 |
1 files changed, 102 insertions, 40 deletions
diff --git a/doc/html/ADGuide/RELEASE.txt b/doc/html/ADGuide/RELEASE.txt index f369030..9bee3a3 100644 --- a/doc/html/ADGuide/RELEASE.txt +++ b/doc/html/ADGuide/RELEASE.txt @@ -1,4 +1,4 @@ -HDF5 version 1.4.4-pre3 released on Wed Jun 19 15:37:34 CDT 2002 +HDF5 version 1.4.4-pre5 released on Thu Jun 27 13:33:35 CDT 2002 ============================================================================== @@ -27,6 +27,7 @@ CONTENTS - New Features - Bug Fixes since HDF5-1.4.3 +- Performance Improvements - Documentation - Platforms Tested - Supported Configuration Features @@ -37,24 +38,21 @@ New Features ============ o Configuration ================ + * The H4 to H5 tools were removed from the main source and placed in a + separate package. You can get these tools from the HDF ftp site + (ftp://hdf.ncsa.uiuc.edu/). The "--with-hdf4" command-line option during + configure is no longer valid. BW - 2002/06/25 + o Library ========= o General --------- - * Added internal "small data" aggregation, which can reduce the number of - actual I/O calls made, improving performance. QAK - 2002/06/05 - * Improved internal metadata aggregation, which can reduce the number of - actual I/O calls made, improving performance. Additionally, this can - reduce the size of files produced. QAK - 2002/06/04 - * Improved internal metadata caching, which can reduce the number of - actual I/O calls made by a substantial amount, improving - performance. QAK - 2002/06/03 * Fill-value's forward-compatibility with 1.5 was added. SLU - - 2002/04/11 + 2002/04/11 * A new query function H5Tget_member_index has been added for compound - and enumeration data types, to retrieve member's index by name. - SLU - 2002/04/05 + and enumeration data types, to retrieve member's index by name. + SLU - 2002/04/05 * Added serial multi-gigabyte file size test. "test/big -h" shows the help page. AKC - 2002/03/29 @@ -68,9 +66,21 @@ New Features o Performance ------------- + * Added internal "small data" aggregation, which can reduce the number of + actual I/O calls made, improving performance. QAK - 2002/06/05 + * Improved internal metadata aggregation, which can reduce the number of + actual I/O calls made, improving performance. Additionally, this can + reduce the size of files produced. QAK - 2002/06/04 + * Improved internal metadata caching, which can reduce the number of + actual I/O calls made by a substantial amount, improving + performance. QAK - 2002/06/03 + o Parallel Library ================== + * Fixed bug in parallel I/O routines where a collective I/O which used + MPI derived types, followed by an independent I/O would cause the library + to hang. QAK 2002/06/24 * Added environment variable flag to control whether creating MPI derived typed is preferred or not. This can affect performance, depending on which way the MPI-I/O library is optimized for. The default is set to @@ -103,8 +113,21 @@ New Features o Support for new platforms and languages ========================================= - * Parallel Fortran Library works now on HP-UX B.11.00 Sys V - EIP - 2002/05/06 + * Parallel Fortran Library works now on HP-UX B.11.00 Sys V + EIP - 2002/05/06 + * Intel C++ and F90 compilers Version 6.0 are supported on Linux 2.4 + * Intel C++ compilers Version 6.0 are supported on windows 2000 + + + o Misc. + ========================================= + * zlib is moved out of windows source release. Users should go to + HDF homepage(URL: http://???) to download the corresponding zlib library. + * Windows binary release is built with the old version of zlib library. + We expect users to use zlib 1.1.4 to build with source release. + * In windows-specified install document, we specify how to test backward + compatibility. However, in this release, we are not testing the backward + compatibility of HDF5. Bug Fixes since HDF5-1.4.3 Release @@ -130,7 +153,7 @@ Bug Fixes since HDF5-1.4.3 Release * Clear symbol table node "dirty" flag when flushing symbol tables to disk, to reduce I/O calls made & improve performance. QAK - 2002/06/03 * Fixed bug where an object's header could get corrupted in certain - obscure situations where many objects were created in the + obscure situations when many objects were created in the file. QAK - 2002/05/31 was not being kept the same as the original file. QAK - 2002/05/14 * Fixed bug where read/write intent in file IDs created with H5Freopen @@ -155,6 +178,27 @@ Bug Fixes since HDF5-1.4.3 Release conversion buffer is attempted to be read. QAK - 2002/03/26 +Performance Improvements +======================== + This release of the HDF5 library has been extensively tuned to improve +performance, especially to improve parallel I/O performance. + Most of the specific information for particular performance improvements +is mentioned in the "New Features" and "Bug Fixes Since HDF5-1.4.3" sections +of this document, but in general, the library should make fewer and larger +I/O requests when accessing a file. Additionally, improvements to the parallel +I/O portions of the library should have reduced the communications and barriers +used in various internal algorithms, improving the performance of the library. + However, with the extensive changes to some portions of the library that +were required for these improvements, some errors or unanticipated results may +have been introduced also. Please report any problems encountered to our +support team at hdfhelp@ncsa.uiuc.edu. + Hopefully these improvements will benefit all HDF5 applications, but if +there are particular I/O patterns that appear to be slower than necessary, +please send e-mail to hdfhelp@ncsa.uiuc.edu with a sample program showing the +problem behavior and we will look into the issue to see if it is possible to +address it. + + Documentation ============= @@ -169,12 +213,15 @@ Platforms Tested AIX 4.3 (IBM SP RS6000) C for AIX Compiler, Version 5.0.2.0 xlf 7.1.0.2 poe 3.1.0.12 (includes mpi) + AIX 5.1 xlc 5.0.2.0 + xlf 07.01.0000.0002 + mpcc_r 5.0.2.0; mpxlf_r 07.01.0000.0002 Cray T3E sn6711 2.0.5.57 Cray Standard C Version 6.5.0.3 Cray Fortran Version 3.5.0.4 - Cray SV1 10.0.0.8 Cray Standard C Version 6.5.0.3 + Cray SV1 10.0.1.1 Cray Standard C Version 6.5.0.3 Cray Fortran Version 3.5.0.4 - FreeBSD 4.5 gcc 2.95.3 - g++ 2.95.3 + FreeBSD 4.6 gcc 2.95.4 + g++ 2.95.4 HP-UX B.10.20 HP C HP92453-01 A.10.32.30 HP F90 v2.3 HP-UX B.11.00 HP C HP92453-01 A.11.01.20 @@ -183,15 +230,20 @@ Platforms Tested HP F90 v2.4 HP MPI [not a product] (03/24/2000) B6060BA IRIX 6.5 MIPSpro cc 7.30 - IRIX64 6.5 (64 & n32) MIPSpro cc 7.3.1.2m - Linux 2.4.4 gcc 2.95.3 + IRIX64 6.5 (64 & n32) MIPSpro cc 7.3.1.3m + F90 MIPSpro 7.3.1.3m (64 only) + Linux 2.4.9-31smp gcc 2.95.3 g++ 2.95.3 + Intel(R) C++ Version 6.0 + Intel(R) Fortran Compiler Version 6.0 + MPICH 1.2.2 Linux 2.2.18smp gcc 2.95.2 gcc 2.95.2 with mpich 1.2.1 g++ 2.95.2 pgf90 3.2-4 - OSF1 V5.1 Compaq C V6.3-028 - Compaq Fortran V5.4-1283 + OSF1 V5.1 Compaq C V6.4-014 + Compaq Fortran V5.5-1877-48BBF + gcc version 3.0 for C++ SunOS 5.7 WorkShop Compilers 5.0 98/12/15 C 5.0 (Solaris 2.7) Workshop Compilers 5.0 98/12/15 C++ 5.0 Workshop Compilers 5.0 98/10/25 @@ -208,19 +260,19 @@ Platforms Tested 109508-04 2001/07/11 TFLOPS r1.0.4 v4.2.2 i386 pgcc Rel 3.1-4i with mpich-1.2.3 with local modifications - IA-32 Linux 2.2.10smpx cc Intel 5.0.1 - egcs-2.91.66 + IA-32 Linux 2.4.9 cc Intel 5.0.1 + gcc 2.96 + Intel(R) C++ Version 6.0 + Intel(R) Fortran Compiler Version 6.0 + IA-64 Linux 2.4.16 ia64 gcc version 2.96 20000731 - Intel(R) C++ Itanium(TM) Compiler - for the Itanium(TM)-based applications, - Version 6.0 Beta, Build 20010905 + Intel(R) C++ Version 6.0 + Intel(R) Fortran Compiler Version 6.0 Windows 2000 (NT5.0) MSVC++ 6.0 DEC Visual Fortran 6.0 Windows NT4.0 MSVC++ 6.0 DEC Visual Fortran 6.0 Windows NT4.0 Code Warrior 6.0 - Windows 98 MSVC++ 6.0 - DEC Visual Fortran 6.0 Supported Configuration Features Summary @@ -239,7 +291,8 @@ Supported Configuration Features Summary Solaris2.7 y y (1) y n y y y y Solaris2.8 64 y n y n y y y y Solaris2.8 32 y y (1) y n y y y y - IA-64 y n n n n n y y + IA-64 y n y n n n y y + IA-32 y n y n n n y y IRIX6.5 y y (1) n n n y y y IRIX64_6.5 64 y y (2) y y n y y y IRIX64_6.5 32 y y (2) n n n y y y @@ -267,6 +320,7 @@ Supported Configuration Features Summary Solaris2.8 64 n y n n n y Solaris2.8 32 n x y n n y IA-64 n n n n n y + IA-32 n n n n n y IRIX6.5 n x y n n y IRIX64_6.5 64 n x y n y y IRIX64_6.5 32 n x y n y y @@ -280,7 +334,6 @@ Supported Configuration Features Summary AIX-4.3 SP2 n y (3) n n n y AIX-4.3 SP3 n y n n n y Win2000 n y n n n n - Win98 n y n n n n WinNT n y n n n n WinNT CW n n n n n n FreeBSD n y y n n y @@ -329,15 +382,10 @@ Known Problems be off by default. One may turn it on by setting environment variable HDF5_MPI_OPT_TYPES to a non-zero value such as 1. - * On IA64 systems one has to use -DIA64 compilation flag to compile - h4toh5 and h5toh4 utilites. After configuration step manually modify - Makefile in the tools/h4toh4 and tools/h5toh4 directories to add - -DIA64 to the compilation flags. - - * On IA32 and IA64 systems, if you use a compiler other than GCC (such as - Intel's ecc or icc compilers), you will need to modify the generated - "libtool" program after configuration is finished. On or around line 104 - of the libtool file, there are lines which look like: + * On IA32 and IA64 systems, if you use a compiler other than GCC (such as + Intel's ecc or icc compilers), you will need to modify the generated + "libtool" program after configuration is finished. On or around line 104 + of the libtool file, there are lines which look like: # How to pass a linker flag through the compiler. wl="" @@ -347,3 +395,17 @@ Known Problems # How to pass a linker flag through the compiler. wl="-Wl," + * To build Fortran Library using Intel compilers one has to + x modify source code in the fortran/src directory to remove !DEC and !MS + compiler's directives + x build fails in fortran/test and then in frotran/examples directory; + to proceed edit work.pcl files in those directories to contain + two lines + + work.pc + ../src/work.pc + + * To build Fortran Library on IA64 use + setenv CC "ecc -DIA64" + setenv F9X "efc -cl,work.pcl" + before running configure and see steps described above. |