Hi Dave<br><br>I believe you can turn it &quot;off&quot; by setting<br><br>-mca coll ^tuned<br><br>This will tell the system to consider all collective modules -except- for tuned.<br><br>HTH<br>Ralph<br><br><div class="gmail_quote">
On Thu, Oct 29, 2009 at 12:13 PM, David Gunter <span dir="ltr">&lt;<a href="mailto:dog@lanl.gov">dog@lanl.gov</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
We have a user who&#39;s hitting a hang in MPI_Allgather that totalview is showing is in a tuned collective operation.<br>
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How do we disable the use of tuned collectives?  We have tried setting the priority to 0 but maybe that wasn&#39;t the correct way:<br>
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mpirun -mca coll_tuned_priority 0 ...<br>
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Should it have been a higher number or is there another param that should be set?<br>
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Thanks,<br>
david<br>
--<br>
David Gunter<br>
HPC-3: Infrastructure Team<br>
Los Alamos National Laboratory<br>
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