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authorMuQun Yang <ymuqun@hdfgroup.org>2006-03-09 14:45:35 (GMT)
committerMuQun Yang <ymuqun@hdfgroup.org>2006-03-09 14:45:35 (GMT)
commit3ba9425ab266840c7bc8812a68d29e21abffa4f5 (patch)
tree032d7549bf86812575a9c9b159cb2f21270f15c0
parent13cddec0b46cf3ef3918a42724db3508c1308638 (diff)
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[svn-r12043] Purpose:
Add some descriptions about MPICH collective IO bug. Description: Solution: Platforms tested: Misc. update:
-rw-r--r--release_docs/RELEASE.txt4
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.