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| author | Quincey Koziol <koziol@hdfgroup.org> | 2002-05-17 14:03:23 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2002-05-17 14:03:23 (GMT) |
| commit | 064d89ddae643fbc13577bc8ea0f766a718b928f (patch) | |
| tree | 21200a9a0e36697d9952302860fdb5db4e7e66c9 /release_docs/RELEASE.txt | |
| parent | e1e68de8b5598ee142affd7e5301e8b1177b2dd2 (diff) | |
| download | hdf5-064d89ddae643fbc13577bc8ea0f766a718b928f.zip hdf5-064d89ddae643fbc13577bc8ea0f766a718b928f.tar.gz hdf5-064d89ddae643fbc13577bc8ea0f766a718b928f.tar.bz2 | |
[svn-r5435] Purpose:
Document Code improvement below:
Description:
Propagated the "fill time" property into the parallel chunk allocation
routine, allowing it to avoid writing fill values to each new chunk
allocated. This improves the performance of chunked datasets in parallel
I/O to be on par with contiguous datasets again (on modi4).
Diffstat (limited to 'release_docs/RELEASE.txt')
| -rw-r--r-- | release_docs/RELEASE.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index c3a5d6e..01c99ef 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -164,6 +164,10 @@ Documentation New Features ============ + * Added feature to parallel chunk allocation routine to not write fill + values to chunks allocated if the user has set the "fill time" to never. + This can improve parallel I/O performance for chunked + datasets. QAK - 2002/05/17 * Changed method for allocating chunked dataset blocks in parallel to only allocate blocks that don't already exist, instead of attempting to create all the blocks all the time. This improves parallel I/O performance for |