[torqueusers] qsub -l size=## ?
tbaer at utk.edu
Fri Nov 14 17:06:01 MST 2008
On Fri, 2008-11-14 at 18:11 -0500, Brock Palen wrote:
> I was reading the jaguar docs page:
> They mention they are using torque and Moab (congrats to the project
> and CR)
> That being said, what does -l size=## mean?
It's the total number of processor cores requested by the job. That's
how it's used on Jaguar and Kraken (the NICS XT system), anyway.
TORQUE on the Cray XTs is a little weird in that you don't run a pbs_mom
on every compute node, because there are potentially tens of thousands
of them. Instead, the pbs_moms run on some service nodes, and jobs on
those service nodes spawn processes on the compute nodes by calling out
to a Cray-specific placement service called ALPS (which in some ways is
like SLURM, if you're familiar with that).
Troy Baer, HPC System Administrator
National Institute for Computational Sciences, University of Tennessee
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