[Beowulf] VMC - Virtual Machine Console

Bernard Li bernard at vanhpc.org
Fri Jan 18 17:53:26 EST 2008


On 1/18/08, stephen mulcahy <smulcahy at aplpi.com> wrote:

> I'm wondering how much of a performance benefit there is to using the
> above-mentioned OS commands to set affinity (versus the trade-off in
> setting this up).

I guess the answer to the above question is "it depends on your code"
-- but I'd also like to hear whether there are any general performance
benefits to setting CPU affinity.  Do major schedulers support this?
Would this help with embarrassingly parallel jobs VS large MPI jobs on
manycore machines?

Thanks,

Bernard
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