On Sep 20, 2007, at 7:02 AM, Tim Prins wrote:
In our nightly runs with the trunk I have started seeing cases
where we
appear to be segfaulting within/below malloc. Below is a typical
output.
Note that this appears to only happen on the trunk, when we use
openib,
and are in 32 bit mode. It seems to happen randomly at a very low
frequency (59 out of about 60,000 32 bit openib runs).
This could be a problem with our machine, and has showed up since I
started testing 32bit ofed 10 days ago.
Anyways, just curious if anyone had any ideas.
As someone else said, this usually points to a duplicate free or the
like in malloc. You might want to try compiling with --without-
memory-manager, as the ptmalloc2 in glibc frequently is more verbose
about where errors occurred than is the one in Open MPI.
Brian
