on my system, i use JOBNODEMATCHPOLICY EXACTNODE to ensure that users get specifically the resources they request (i.e. node=4:ppn=1 will give 4 nodes with 1 processor per node, no matter how many processors are on each system). --Joe
________________________________ From: Lawrence Sorrillo [mailto:[EMAIL PROTECTED] Sent: Wed 9/10/2008 10:52 AM To: Greenseid, Joseph M. Cc: A.Th.C. Hulst; [email protected] Subject: Re: [Mauiusers] nodeallocationpolicy 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 > > > > _______________________________________________ > > mauiusers mailing list > > [email protected] > > http://www.supercluster.org/mailman/listinfo/mauiusers > > > > _______________________________________________ > mauiusers mailing list > [email protected] > http://www.supercluster.org/mailman/listinfo/mauiusers > > ------------------------------------------------------------------------ > > _______________________________________________ > mauiusers mailing list > [email protected] > http://www.supercluster.org/mailman/listinfo/mauiusers >
_______________________________________________ mauiusers mailing list [email protected] http://www.supercluster.org/mailman/listinfo/mauiusers
