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| author | MuQun Yang <ymuqun@hdfgroup.org> | 2006-03-09 14:45:35 (GMT) |
|---|---|---|
| committer | MuQun Yang <ymuqun@hdfgroup.org> | 2006-03-09 14:45:35 (GMT) |
| commit | 3ba9425ab266840c7bc8812a68d29e21abffa4f5 (patch) | |
| tree | 032d7549bf86812575a9c9b159cb2f21270f15c0 | |
| parent | 13cddec0b46cf3ef3918a42724db3508c1308638 (diff) | |
| download | hdf5-3ba9425ab266840c7bc8812a68d29e21abffa4f5.zip hdf5-3ba9425ab266840c7bc8812a68d29e21abffa4f5.tar.gz hdf5-3ba9425ab266840c7bc8812a68d29e21abffa4f5.tar.bz2 | |
[svn-r12043] Purpose:
Add some descriptions about MPICH collective IO bug.
Description:
Solution:
Platforms tested:
Misc. update:
| -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 0398e4a..a23dbdf 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -893,6 +893,10 @@ Linux 2.4 IA64 Intel y n y n y y y Known Problems ============== +* On mpich 1.2.5 and 1.2.6, we found that if more than two processes + contribute no IO and the application asks to do IO with collective, we found + that when using 4 processors, a simple collective write will be hung + sometimes. This can be verified with t_mpi test under testpar. * On IRIX6.5, when C compiler version >7.4, the complicate MPI derived data type code will work. However, the user should be aware to enlarge MPI_TYPE_MAX environment variable to some certian value in order to use collective irregular selection code. |