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Subject: Re: [OMPI users] How do I run OpenMPI safely on a Nehalem standalone machine?
From: John Hearns (hearnsj_at_[hidden])
Date: 2010-05-05 02:14:28


Regarding hyperthreading, and finding our information about your CPUs
in detail, there is the excellent hwloc project from OpenMPI

http://www.open-mpi.org/projects/hwloc/

I downloaded the 1.0 release candidate, and it compiled and ran first
time on Nehalem systems. Gives a superb and helpful view of core and
cache layout. Don't be afraid to download this version.