[Beowulf] Again about NUMA (numactl and taskset)

Ashley Pittman apittman at concurrent-thinking.com
Tue Jun 24 08:23:00 EDT 2008


On Mon, 2008-06-23 at 14:59 -0700, Greg Lindahl wrote:
> > 3) Is there some reason to use things like
> > mpirun -np N /usr/bin/numactl <numactl_parameters>  my_application   ?
> 
> Your MPI (and OpenMP) should do this for you.

Of course how you want the binding to be done can depend on the
communication pattern of the application, at least in the case when you
aren't using all cpu's per node.  Your MPI should pick sensible defaults
for you.

Ashley Pittman.

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