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<p class="MsoNormal">True, there’s tons of info in qstat -f, however, doesn’t qstat stop showing my job after it completes, though? Maybe there’s a switch that retrieves “last data”?<br>
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I suppose I could put a qstat -f in as the last thing in the sub job file.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New";color:black"> resources_used.cpupercent = 99<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New";color:black"> resources_used.cput = 00:34:26<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New";color:black"> resources_used.mem = 11764kb<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New";color:black"> resources_used.ncpus = 4<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New";color:black"> resources_used.vmem = 1135264kb<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.0pt;font-family:"Courier New";color:black"> resources_used.walltime = 00:34:28<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">and then there’s /usr/bin/time which might also help.<o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Beowulf <beowulf-bounces@beowulf.org> on behalf of Gus Correa <gus@ldeo.columbia.edu><br>
<b>Date: </b>Tuesday, October 29, 2019 at 11:34 AM<br>
<b>To: </b>"beowulf@beowulf.org" <beowulf@beowulf.org><br>
<b>Subject: </b>[EXTERNAL] Re: [Beowulf] PBS question<o:p></o:p></span></p>
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<p class="MsoNormal">On Tue, Oct 29, 2019 at 2:00 PM Lux, Jim (US 337K) via Beowulf <<a href="mailto:beowulf@beowulf.org">beowulf@beowulf.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">For instance, if I do a select 1:ncpus=4 does it actually use 4 CPUs?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Likewise, is there a “memory high water mark”.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Or are these things I need to instrument in some other way.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">-- <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">ncpus=4 requests 4 cpus/cores, which PBS/Torque will allocate to your job alone (unless the nodes are tagged as work shared).
<o:p></o:p></p>
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<p class="MsoNormal">It is up to you use these cpus (e.g. MPI: mpirun np=4; OpenMP: OMP_THREAD_NUM=4) or not (a serial program).<o:p></o:p></p>
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<p class="MsoNormal">"qstat -f" produces a fair amount of information about the job resources.<o:p></o:p></p>
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<p class="MsoNormal">The accounting logs, in server_priv/accounting/YYYMMDD also do, if you have access to them.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">You can request a certain amount of memory with the -l (lowercase L) switch of qsub.<o:p></o:p></p>
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<p class="MsoNormal">See 'man qsub' for syntax, and 'man pbs_resources' for which resources can be requested (particularly pmem, pvmem, vmem).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I hope this helps,<o:p></o:p></p>
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<p class="MsoNormal">Gus Correa<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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