Indeed how is this done?
The job should run on only 4 of the 8 cpus available per node and be
spread across 4 nodes. So yes, using 16 cpus.
-L
Greenseid, Joseph M. wrote:
wait, you want 16 CPU, divided evenly over 4 nodes, is that right?
--Joe
*From:* [EMAIL PROTECTED] on behalf of A.Th.C. Hulst
*Sent:* Mon 9/8/2008 7:41 AM
*To:* [email protected]
*Subject:* Re: [Mauiusers] nodeallocationpolicy
Ah, sorry, I've found it. With moab one can request nodes=4:tpn=4,
which does
what I expect. I'll need moab if I want to try this.
Thanks
On Monday 08 September 2008 13:22:46 A.Th.C. Hulst wrote:
> #PBS -l nodes=4:ppn=4
> lamboot
> mpiexec hello_mpi
> lamhalt
>
> What happens is that the job is run on two nodes, each node running two
> chunks of 4 "cpus" (which are actually cores). That is not really
> desirable. I would like to divide the job over 4 nodes.
>
> My initial guess was that I could control node allocation with the
> nodeallocationpolicy parameter, but I fail to get it working.
>
> Does anyone have any experience with a similar issue? Is it possible?
>
> Best regards,
> Sander
>
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