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authorHDF Admin <hdfadmin@ncsa.uiuc.edu>2002-06-27 18:42:49 (GMT)
committerHDF Admin <hdfadmin@ncsa.uiuc.edu>2002-06-27 18:42:49 (GMT)
commitc973d3145d281cae9cb0520dd5844375f822c0ec (patch)
tree6cd2413f29b3d8225926eebbcd61afe26e79e1d9 /doc
parent73a31db961cfc749fb0f1cf637c8da1610c66779 (diff)
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[svn-r5722] Snapshot version 1.4 release 4 (pre5)
Diffstat (limited to 'doc')
-rw-r--r--doc/html/ADGuide/RELEASE.txt142
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+ configure is no longer valid.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.