[Beowulf] newb question - help with NUMA + mpich2 + GPUs

Hearns, John john.hearns at mclaren.com
Tue Feb 21 01:42:26 PST 2012


Micha.

Here is probably a good starting point for you:
http://www.open-mpi.org/projects/hwloc/

I would download hwloc, install it on your system and print out the
topology.
That page provides good reading matter on numa placement.

Also on a NUMA machine I find that the 'htop' utility is very useful -
you should always check that
Processes are running on the CPUs you think they should be

http://htop.sourceforge.net/

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