Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: [OMPI users] Disabling tuned collectives in OMPI 1.3.3
From: David Gunter (dog_at_[hidden])
Date: 2009-10-29 14:13:58

We have a user who's hitting a hang in MPI_Allgather that totalview is
showing is in a tuned collective operation.

How do we disable the use of tuned collectives? We have tried setting
the priority to 0 but maybe that wasn't the correct way:

mpirun -mca coll_tuned_priority 0 ...

Should it have been a higher number or is there another param that
should be set?


David Gunter
HPC-3: Infrastructure Team
Los Alamos National Laboratory