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Diffstat (limited to 'release_docs/RELEASE.txt')
| -rw-r--r-- | release_docs/RELEASE.txt | 236 |
1 files changed, 123 insertions, 113 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index c4e3757..773a586 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -25,110 +25,39 @@ If you have any questions or comments, please send them to: CONTENTS - New Features -- Bug Fixes since HDF5-1.4.0 - Support for new platforms and languages +- Bug Fixes since HDF5-1.4.0 - Platforms Tested - Known Problems -Bug Fixes since HDF5-1.4.0 release -================================== - -Library -------- - * The library now correctly reuses space when objects are deleted in the - file. This should be handled correctly for every situation, except - datasets with variable-length datatypes are not returning the space they - use in the global heap currently. QAK - 2003/04/13 - * Fixed error in B-tree deletion routine which could cause groups to be - corrupted when objects are removed from them. - QAK - 2003/04/11 - * Fixed error in file space freeing code which could cause metadata to - fail to be written to the file. - QAK - 2003/04/11 - * -O caused errors in AIX 5.x platforms. Removed it from - --enable-production mode. AKC - 2003/03/31 - * Corrected memory/resource leaks in per-thread key information when - thread-safe operation was enabled. QAK - 2003/02/07 - * Improved error assertion for nil VL strings, making it fails with error - stack instead of just assertion failure. SLU - 2002/12/16 - * Added two new API functions: H5Zunregister & H5Zfilter_avail. - QAK - 2002/11/16 - * Add data shuffle filter(source code H5Zshuffle.c), the combination of the - shuffling and compression can make data compression better without suffering - much encoding and decoding CPU time for many application datasets(especially - for floating point data). This adds a new API function: H5Pset_shuffle. - KY - 2002/11/13 - * Allow scalar dataspaces to be used for parallel I/O. QAK - 2002/11/05 - * New functions H5Gget_comment(modification), H5Aget_storage_size, - H5Arename. SLU - 2002/10/29 - * Fixed an assertion of H5S_select_iterate that did not account for scalar - type that has no dimension sizes. AKC - 2002/10/15 - * Partially fixed space allocation inefficiencies in the file by - improving our algorithms for re-using freed space. QAK - 2002/08/27 - * Fixed data corruption problem which could occur when fill values were - written to a contiguously stored dataset in parallel. QAK - 2002/08/27 - * Fixed VL memory leak when data is overwritten. The heap objects holding - old data are freed. If the fill value writting time is set to - H5D_FILL_TIME_NEVER, the library prohibits user to create VL type dataset. - The library free all the heap objects storing VL type if there is nested - VL type(a VL type contains another VL type). SLU - 2002/07/10 - * Tweaked a few API functions to use 'size_t' instead of 'unsigned' or - 'hsize_t', which may cause errors in some cases. - - -Configuration -------------- - - * Included the both the examples of fortran and c++ "make check-install" - testing. This tests the correctness of the h5fc command. AKC - 2003/04/22 - * When using gcc 3.x, we use -std=c99 instead of -ansi for compiling. - QAK - 2003/04/11 - * IA64 platform has its own configure setting and use Intel Compilers as - the default compilers (were gcc and pgf90 before.) This also eliminated - the segmentation fault in the fortran test. The missing reference of - "exit" is fixed too. AKC - 2003/04/02 - - -Tools ------ - - * Added a -force option to h5redeploy. AKC - 2003/03/04 - * The VL string bug(data and datatype cannot be shown) in h5dump is fixed. - -SLU - 2002/11/18 - * Fixed segfault if h5dump was invoked with some options but no file (e.g., - h5dump -H). -AKC, 2002/10/15 - * Fixed limitation in h5dumper with object names which reached over 1024 - characters in length. We can now handle arbitrarily larger sizes for - object names. BW - 2002/02/27 - * Fixed so that the "-i" flag works correctly with the h5dumper. - * Fixed segfault when "-v" flag was used with the h5dumper. - - -Documentation ( this section is messed up, we need to find place where - to put it) -------------- - o Library - ========= - o General - --------- - - - o APIs - ------ - o Fortran APIs - -------------- - * Added support for generic properties. - * Added support for time allocation properties. - - o Performance - ------------- - * Improved dataset creation time by about 30% (relative to the 1.4.x - branch). - New Features ============ +Configuration: +-------------- +The following flags have been added to the configuration script: +--enable-hdf5v1_4 Compile the HDF5 v1.4 compatibility interface +--enable-mpe Enable MPE instrumentation [default=no] +--enable-filters=all Turn on all internal I/O filters. One may also + specify a comma-separated list of filters or the + word no. The default is all internal I/O filters. +--with-szlib=DIR Use szlib library for external szlib I/O filter + [default=no] + +Library: +-------- + Summary: This release has the following new features that are not + available in 1.4.* releases + 1. Generic properties to give application more control on I/O pipeline + 2. Time allocation and fill value properties + 3. New filters: external compression filter szip + internal shuffling and checksum filters + 4. Compact storage layout for datasets + 5. Redesigned I/O pipeline for better performance. + + Complete list of changes: + * Changed raw data I/O to only access each chunk once, improving performance in many situations with hyperslabs and large chunks or chunks with filters. These improvements are currently limited to serial I/O, with @@ -242,22 +171,8 @@ New Features * Modified the Pablo build procedure to permit building of the instrumented library to link either with the Trace libraries as before or with the Pablo Performance Caputure Facility. - * Added new F90 APIs: - H5F APIs: - h5fget_obj_count_f h5fget_obj_ids_f - EIP - 2002/10/01 - H5G APIs: - h5glink2_f and h5gmove2_f - EIP - 2002/09/25 - H5P APIs: - h5pequal_f - h5pget(set)_fclose_degree_f - h5pget(set)_buffer_f - - H5T APIs: - h5tget_member_index_f - EIP - 2002/10/01 - + * Added new F90 APIs for generic properties, new filters, and + time/space allocation properties. * C++ API: - Added two new member functions: Exception::getFuncName() and Exception::getCFuncName() to provide the name of the member @@ -268,10 +183,100 @@ New Features H5Scopy, and H5Pcopy to make a copy of a datatype, dataspace, and property list, respectively. +Parallel Library: +----------------- + +Tools: +------ + * h5diff to compare two HDF5 files was added + * h5import to import ascii and binary data to an HDF5 file was added. + Old h5import tool in the tools/misc directory was renamed to + h5createU8 to reflect its purpose. h5createU8 will be deleted in + 1.6.1 release. + Support for new platforms and languages ======================================= * Added C++ API support on HPUX11.00. BMR - 2003/03/19 +Bug Fixes since HDF5-1.4.0 release +================================== + +Library +------- + * The library now correctly reuses space when objects are deleted in the + file. This should be handled correctly for every situation, except + datasets with variable-length datatypes are not returning the space they + use in the global heap currently. QAK - 2003/04/13 + * Fixed error in B-tree deletion routine which could cause groups to be + corrupted when objects are removed from them. + QAK - 2003/04/11 + * Fixed error in file space freeing code which could cause metadata to + fail to be written to the file. + QAK - 2003/04/11 + * -O caused errors in AIX 5.x platforms. Removed it from + --enable-production mode. AKC - 2003/03/31 + * Corrected memory/resource leaks in per-thread key information when + thread-safe operation was enabled. QAK - 2003/02/07 + * Improved error assertion for nil VL strings, making it fails with error + stack instead of just assertion failure. SLU - 2002/12/16 + * Added two new API functions: H5Zunregister & H5Zfilter_avail. + QAK - 2002/11/16 + * Add data shuffle filter(source code H5Zshuffle.c), the combination of the + shuffling and compression can make data compression better without suffering + much encoding and decoding CPU time for many application datasets(especially + for floating point data). This adds a new API function: H5Pset_shuffle. + KY - 2002/11/13 + * Allow scalar dataspaces to be used for parallel I/O. QAK - 2002/11/05 + * New functions H5Gget_comment(modification), H5Aget_storage_size, + H5Arename. SLU - 2002/10/29 + * Fixed an assertion of H5S_select_iterate that did not account for scalar + type that has no dimension sizes. AKC - 2002/10/15 + * Partially fixed space allocation inefficiencies in the file by + improving our algorithms for re-using freed space. QAK - 2002/08/27 + * Fixed data corruption problem which could occur when fill values were + written to a contiguously stored dataset in parallel. QAK - 2002/08/27 + * Fixed VL memory leak when data is overwritten. The heap objects holding + old data are freed. If the fill value writting time is set to + H5D_FILL_TIME_NEVER, the library prohibits user to create VL type dataset. + The library free all the heap objects storing VL type if there is nested + VL type(a VL type contains another VL type). SLU - 2002/07/10 + * Tweaked a few API functions to use 'size_t' instead of 'unsigned' or + 'hsize_t', which may cause errors in some cases. + + +Configuration +------------- + * Included the both the examples of fortran and c++ "make check-install" + testing. This tests the correctness of the h5fc command. AKC - 2003/04/22 + * When using gcc 3.x, we use -std=c99 instead of -ansi for compiling. + QAK - 2003/04/11 + * IA64 platform has its own configure setting and use Intel Compilers as + the default compilers (were gcc and pgf90 before.) This also eliminated + the segmentation fault in the fortran test. The missing reference of + "exit" is fixed too. AKC - 2003/04/02 + +Performance +------------- + * Improved dataset creation time by about 30% (relative to the 1.4.x + branch). + +Tools +----- + + * Added a -force option to h5redeploy. AKC - 2003/03/04 + * The VL string bug(data and datatype cannot be shown) in h5dump is fixed. + -SLU - 2002/11/18 + * Fixed segfault if h5dump was invoked with some options but no file + (e.g., h5dump -H). -AKC, 2002/10/15 + * Fixed so that the "-i" flag works correctly with the h5dumper. + * Fixed segfault when "-v" flag was used with the h5dumper. + + +Documentation +------------- + + + @@ -464,7 +469,7 @@ Known Problems compiled with -O1 or -O0. Only -O (same as -O2) causes the test program to fail. -*Certain platforms give false negatives when testing h5ls: +* Certain platforms give false negatives when testing h5ls: - Cray J90 (and Cray T3E?) give errors during testing when displaying some floating-point values. These are benign differences due to the different precision in the values displayed and h5ls appears to @@ -475,6 +480,11 @@ Known Problems subdirectory in the top level directory with the Cray-specific files from the site: +* On some platforms that use Intel compilers to build HDF5 fortran library, + compilation may fail for fortranlib_test.f90, fflush1.f90 and fflush2.f90 + complaining about exit subroutine. Comment out the line + IF (total_error .ne. 0) CALL exit (total_error) + ftp://hdf.ncsa.uiuc.edu/pub/ougoing/hdf5/hdf5-1.6.0/F90_source_for_Crays * On IA32 and IA64 systems, if you use a compiler other than GCC (such as |