[torquedev] Confused about processes again
chris at csamuel.org
Sun Feb 28 00:01:58 MST 2010
On Fri, 26 Feb 2010 06:40:12 pm Simon Toth wrote:
> My problem is that our users also require node-exclusive jobs. Such jobs
> always use the whole node regardless of the amount of resources they
> actually use (for example I/O heavy jobs use this).
Two options that I've used in the past:
1) Make the user who needs the whole node request all the CPUs with (say):
qsub -l nodes=1:ppn=8
2) Define a default pmem or pvmem memory request for all queues and then have
the user who needs a whole node to submit a job that requests the amount of
RAM that is available. For instance when I was at VPAC we had a system that
was uniformly 4GB per core, so we had a default pmem of just under 4GB.
Our accounting system then scaled their usage (cores*hours) if they had
exceeded that figure (as there would be cores unavailable to other users, so
whilst they weren't running code on them they were effectively occupying
Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC
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