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| author | Quincey Koziol <koziol@hdfgroup.org> | 2003-02-10 17:26:09 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2003-02-10 17:26:09 (GMT) |
| commit | 24d8506dd564c5cc0fdebb5ebdfaec7bda5a7435 (patch) | |
| tree | 6b2eb3bb1e782c40718204882428e6471b6281ac /release_docs/RELEASE.txt | |
| parent | 738661ab9f409b8d961ba1402d6c4dd5f99ecb43 (diff) | |
| download | hdf5-24d8506dd564c5cc0fdebb5ebdfaec7bda5a7435.zip hdf5-24d8506dd564c5cc0fdebb5ebdfaec7bda5a7435.tar.gz hdf5-24d8506dd564c5cc0fdebb5ebdfaec7bda5a7435.tar.bz2 | |
[svn-r6387] Purpose:
Bug Fix
Description:
Metadata cache in parallel I/O can cause hangs in applications which
perform independent I/O on chunked datasets, because the metadata cache
can attempt to flush out dirty metadata from only a single process, instead
of collectively from all processes.
Solution:
Pass a dataset transfer property list down from every API function which
could possibly trigger metadata I/O.
Then, split the metadata cache into two sets of entries to allow dirty
metadata to be set aside when a hash table collision occurs during
independent I/O.
Platforms tested:
Tested h5committest {arabica (fortran), eirene (fortran, C++)
modi4 (parallel, fortran)}
FreeBSD 4.7 (sleipnir) serial & parallel
Misc. update:
Updated release_docs/RELEASE
Diffstat (limited to 'release_docs/RELEASE.txt')
| -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 38a5a75..202ca58 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -35,6 +35,9 @@ Bug Fixes since HDF5-1.4.0 Library ------- + * Corrected metadata caching bug in parallel I/O which could cause hangs + when chunked datasets were accessed with independent transfer mode. + QAK - 2003/02/10 * Corrected memory/resource leaks in per-thread key information when thread-safe operation was enabled. QAK - 2003/02/07 * H5Fopen without the H5F_ACC_CREAT flag should not succeed in creating |