On Feb 8, 2007, at 6:33 PM, Troy Telford wrote:

The error is (upon job start), something to the extent of (transcribed
 from phone):
  mca_mpool_openib_register:  cannot allocate memory
   .
   .
   .
  Error creating low priority CQ for MTHCA0:  Cannot allocate memory.

What has to happen for this message to get thrown? (I've seen IB fabric instability with OpenIB before, and I don't recall this being one of the
errors I've seen).

This is a common problem with OpenIB clusters. You need to increase the amount of memory that a process can lock. We have an FAQ entry on this issue:

    http://www.open-mpi.org/faq/?category=openfabrics#ib-locked-pages

Good luck!

Brian

--
  Brian Barrett
  Open MPI Team, CCS-1
  Los Alamos National Laboratory


Reply via email to