On Tue, Oct 29, 2019 at 2:00 PM Lux, Jim (US 337K) via Beowulf < beowulf@beowulf.org> wrote:
> I’m doing some EP job arrays using PBS, and I was wondering if there’s a > way to find out how much resources the job actually consumed. > > For instance, if I do a select 1:ncpus=4 does it actually use 4 CPUs? > > Likewise, is there a “memory high water mark”. > > > > The idea here is that since my job competes with all the other jobs, the > better I can describe my resource needs (i.e. not over-require) the faster > my job gets through the system. > > > > Or are these things I need to instrument in some other way. > > > > -- > > ncpus=4 requests 4 cpus/cores, which PBS/Torque will allocate to your job alone (unless the nodes are tagged as work shared). It is up to you use these cpus (e.g. MPI: mpirun np=4; OpenMP: OMP_THREAD_NUM=4) or not (a serial program). "qstat -f" produces a fair amount of information about the job resources. The accounting logs, in server_priv/accounting/YYYMMDD also do, if you have access to them. You can request a certain amount of memory with the -l (lowercase L) switch of qsub. See 'man qsub' for syntax, and 'man pbs_resources' for which resources can be requested (particularly pmem, pvmem, vmem). I hope this helps, Gus Correa > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > https://beowulf.org/cgi-bin/mailman/listinfo/beowulf >
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