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From: Brian W. Barrett (bbarrett_at_[hidden])
Date: 2007-02-08 21:27:29


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