I sent a problem to the list but didn't receive any reply. In short, we found
that when we run openmpi+openfoam program on a node (in a diskless cluster),
there is a huge IO operations caused by openmpi. When we run openmpi+openfoam
on the server, there is no problem. When we run openfoam directly on the node,
there is also no problem.

Now I am looking for some verbose/debug outputs from openmpi which
shows the activity of it (in particular IO messages for example opening file1
or closing file2...).

Can I extract such messages?

From: Ralph Castain <rhc@open-mpi.org>
To: Mahmood Naderan <nt_mahmood@yahoo.com>; Open MPI Users <users@open-mpi.org>
Sent: Thursday, October 25, 2012 8:44 PM
Subject: Re: [OMPI users] running openmpi in debug/verbose mode

There is a *ton* of debug output available - would help to know what you are attempting to debug

On Oct 25, 2012, at 11:38 AM, Mahmood Naderan <nt_mahmood@yahoo.com> wrote:

Dear all,
Is there any way to run openmpi in debug or verbose mode? Is there any log for openmpi run?
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