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Subject: [OMPI users] memcpy overlap in ompi_ddt_copy_content_same_ddt and glibc 2.12
From: Number Cruncher (number.cruncher_at_[hidden])
Date: 2010-11-10 12:11:47

Just some observations from a concerned user with a temperamental Open
MPI program (1.4.3):

Fedora 14 (just released) includes glibc-2.12 which has optimized
versions of memcpy, including a copy backward.;a=commitdiff;h=6fb8cbcb58a29fff73eb2101b34caa19a7f88eba

I think the overlapping memcpy issue reported previously may be actively
triggered by this optimized memcpy and produce incorrect data.

Related posts:

Original developer response:

Current ticket: