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Subject: Re: [OMPI users] Occasional mpirun hang on completion
From: Barry Rountree (rountree_at_[hidden])
Date: 2008-01-25 14:56:43

On Thu, Jan 24, 2008 at 10:09:51PM -0500, Barry Rountree wrote:
> On Thu, Jan 24, 2008 at 04:03:49PM -0500, Tim Mattox wrote:
> > Hello Barry,
> > I am guessing you are trying to use a threaded build of Open MPI...
> >
> > Unfortunately, the threading support in Open MPI 1.2.x is not only not well
> > tested, it has many known problems. We do not advise use of threading in
> > the Open MPI 1.2.x series. We even added a warning in version 1.2.5 if
> > you try to use threading... specifically we added run-time warnings during
> > MPI_INIT when MPI_THREAD_MULTIPLE and/or progression threads are used.
> >
> > We are targeting the 1.3 series to have threading support actually working.
> Well, I'm happy the problem is obvious and the workaround is easy. I'll
> compile that version tonight and try it out when I get some time on the
> cluster tomorrow.

That fixed it.


> Thanks for the help!
> Barry