[torqueusers] Problem with nodes allocation

Glen Beane glen.beane at gmail.com
Thu Jul 3 04:56:24 MDT 2008


On Thu, Jul 3, 2008 at 4:50 AM, Roger Williams <R.Williams at gns.cri.nz>
wrote:

> A reader sent me this mail reply, for which I'm grateful. Not sure if it
> made it to the list ...
>
> >I find the problem here is the confusion between "nodes" and "cpus". I
> >understand that nodes=5 means you want 5 CPUs not 5 nodes! I always
> >recommend using ":ppn=X", ie -l nodes=5:ppn=2 to get 5 x 2CPU nodes.
> >
> >The $PBS_NODEFILE lists the node name of each CPU assigned, which
> >would mean that in your case the $PBS_NODEFILE would have the first node
> >listed five times.
>
> No. I see only *one* line in  $PBS_NODEFILE in the case that I (and the
> others) have experienced. That is the symptom.
>
> I have also tried the -l nodes=x:ppn=y syntax (I have 8 cores in each
> node). In those trials I get y lines of the first node only.
>
> Again, can any of the Torque developers say if the cause of this problem
> was definitively identified and, if so, has it been fixed?
>


I seem to remember this bug being introduced in 2.2.0 or thereabouts and
fixed in a later release.
I would stick with TORQUE 2.1.10 or 2.3.1
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