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| author | Quincey Koziol <koziol@hdfgroup.org> | 2004-01-31 01:37:08 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2004-01-31 01:37:08 (GMT) |
| commit | 34b2fedf24ce57d0a5b1634060db1ca29a87d8b4 (patch) | |
| tree | 6c888e5caaecc606505bdd7216bd60b6665935e0 /release_docs | |
| parent | 76bcf91b27cdb0cadf31d3b736bb93752db25d7d (diff) | |
| download | hdf5-34b2fedf24ce57d0a5b1634060db1ca29a87d8b4.zip hdf5-34b2fedf24ce57d0a5b1634060db1ca29a87d8b4.tar.gz hdf5-34b2fedf24ce57d0a5b1634060db1ca29a87d8b4.tar.bz2 | |
[svn-r8125] Purpose:
Bug fix/optimization
Description:
Address slowdown in MPI-I/O file metadata operations that was introduced
mid-stream. We now _require_ a POSIX compliant parallel file system for the
MPI-I/O file driver (as well as for the MPI-POSIX file driver).
Also optimized file open operation when the file is being created by
reducing the number of collective & syncronizing calls.
Platforms tested:
FreeBSD 4.9 (sleipnir) w/parallel
h5committest
Diffstat (limited to 'release_docs')
| -rw-r--r-- | release_docs/RELEASE.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 8d9842f..c8f8304 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -128,6 +128,9 @@ Bug Fixes since HDF5-1.6.1 release Configuration ------------- + - Parallel I/O with the MPI-I/O driver will no longer work if the + filesystem is not POSIX compliant. The "HDF5_MPI_1_METAWRITE" + environment variable has been removed. QAK - 2004/01/30 Performance ------------- |