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Hello Phil,<br>
<br>
Thank you for the quick reply! That stack trace on the Darshan list
is eerily like the one I have...<br>
<br>
I just used Open MPI 1.6.4 and it works for me and the application
I'm using. Thanks again!<br>
David<br>
<br>
<div class="moz-cite-prefix">On 03/06/2013 11:01 AM, Phil Carns
wrote:<br>
</div>
<blockquote cite="mid:5137848F.5090100@mcs.anl.gov" type="cite">On
03/06/2013 12:41 PM, David Shrader wrote:
<br>
<blockquote type="cite">Hello All,
<br>
<br>
I have DARSHAN working with our mvapich2 1.8 GNU installation
and am trying to get it to work with a GNU build of Open MPI
1.6.3. The building of DARSHAN completes without a problem when
I point it to a mpicc that is owned by Open MPI 1.6.3, but when
I try to run an application compiled with Open MPI 1.6.3, I get
a seg fault. I know, from reading the documentation, that
DARSHAN seems to work easier with MPICH derivatives; that being
said, are there any known issues and/or workarounds with trying
to use Open MPI? Right now I am using a TOSS2 machine with
dynamic linking (I currently can't do static linking due to a
missing static version of a system library).
<br>
<br>
Thank you!
<br>
David
<br>
<br>
</blockquote>
<br>
Yes, there is actually a known issue with Darshan and LD_PRELOAD
on some versions of OpenMPI. You have two options:
<br>
<br>
a) update to OpenMPI 1.6.4
<br>
<br>
b) apply the attached patch to Darshan (this is a workaround, only
tested with OpenMPI 1.6.3)
<br>
<br>
For some more information on why Darshan won't LD_PRELOAD
correctly on OpenMPI 1.6.3, you can have a look at these mailing
list threads from each project:
<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.open-mpi.org/community/lists/devel/2013/01/11917.php">http://www.open-mpi.org/community/lists/devel/2013/01/11917.php</a>
<br>
<a class="moz-txt-link-freetext" href="http://lists.mcs.anl.gov/pipermail/darshan-users/2013-January/000128.html">http://lists.mcs.anl.gov/pipermail/darshan-users/2013-January/000128.html</a>
<br>
<br>
I'll make a note to add this to the documentation; I should have
done that in the last Darshan release.
<br>
<br>
-Phil
<br>
<br>
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<a class="moz-txt-link-freetext" href="https://lists.mcs.anl.gov/mailman/listinfo/darshan-users">https://lists.mcs.anl.gov/mailman/listinfo/darshan-users</a>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
David Shrader
SICORP, Inc
1350 Central Ave
Suite 104
Los Alamos, NM 87544
<a class="moz-txt-link-abbreviated" href="mailto:David.Shrader@SICORP.com">David.Shrader@SICORP.com</a>
LANL contact information:
LANL #: 505-664-0996
LANL email: <a class="moz-txt-link-abbreviated" href="mailto:dshrader@lanl.gov">dshrader@lanl.gov</a>
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