[torqueusers] Fwd: ncpus anyone?

Glen Beane glen.beane at gmail.com
Tue Mar 2 11:33:30 MST 2010


On Tue, Mar 2, 2010 at 12:58 PM, Josh Bernstein <
jbernstein at penguincomputing.com> wrote:

> I vote for maintaing ncpus. It's very helpful for embarrssingly
> parallel jobs that just need 32 CPUs but don't care where they come
> from.
>


If you don't care where they come from you should be using -lprocs=32
instead since -lncpus requires that all CPUs are on the same box (SMP).
with -lprocs=32 the 32 cores can be distributed anywhere from 1 to 32
nodes.  -lncpus=32 is equivalent to -lnodes=1:ppn=32
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