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Subject: Re: [OMPI users] Segfaults w/ both 1.4 and 1.5 on CentOS 6.2/SGE
From: Joshua Baker-LePain (jlb17_at_[hidden])
Date: 2012-03-13 23:02:59

On Tue, 13 Mar 2012 at 5:31pm, Ralph Castain wrote

> FWIW: I have a Centos6 system myself, and I have no problems running
> OMPI on it (1.4 or 1.5). I can try building it the same way you do and
> see what happens.

I can run as many threads as I like on a single system with no problems,
even if those threads are running at different nice levels. The problem
seems to arise when I'm both a) running across multiple machines and b)
running threads at differing nice levels (which often happens as a result
of our queueing setup). I can't guarantee that the problem *never*
happens when I run across multiple machines with all the threads un-niced,
but I haven't been able to reproduce that at will like I can for the other

Joshua Baker-LePain
QB3 Shared Cluster Sysadmin