Open MPI logo

Open MPI User's Mailing List Archives

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

Subject: Re: [OMPI users] Memory affinity
From: Tim Prince (n8tm_at_[hidden])
Date: 2010-09-27 14:58:52


  On 9/27/2010 9:01 AM, Gabriele Fatigati wrote:
>
> if OpenMPI is numa-compiled, memory affinity is enabled by default?
> Because I didn't find memory affinity alone ( similar) parameter to
> set at 1.
>
>
  The FAQ http://www.open-mpi.org/faq/?category=tuning#using-paffinity
has a useful introduction to affinity. It's available in a default
build, but not enabled by default.

If you mean something other than this, explanation is needed as part of
your question.
taskset() or numactl() might be relevant, if you require more detailed
control.

-- 
Tim Prince