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<p class="MsoNormal"><span style="font-size:11.0pt">Ibán,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">What are you using for your scheduler?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">On my compute nodes, I am setting the pagepool to 16 GB and setting aside specialized memory for GPFS that will not be allocated to jobs.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">-- <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Mike Jarsulic<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Associate Director, Scientific Computing<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Center for Research Informatics | Biological Sciences Division<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">University of Chicago<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">5454 South Shore Drive, Chicago, IL 60615 | (773) 702-2066</span><span style="font-size:11.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">gpfsug-discuss <gpfsug-discuss-bounces@gpfsug.org> on behalf of Iban Cabrillo <cabrillo@ifca.unican.es><br>
<b>Date: </b>Friday, March 8, 2024 at 8:44</span><span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:black">AM<br>
<b>To: </b>gpfsug-discuss <gpfsug-discuss@spectrumscale.org><br>
<b>Subject: </b>[gpfsug-discuss] pagepool<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-line-height-alt:.75pt"><span style="font-size:1.0pt;color:white">Good afternoon, We are new to the DSS system configurations. Reviewing the configuration I have seen that the default pagepool is set to this value: pagepool 323908133683
But not only in the DSS servers, but also in the rest of the HPC nodes <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Good afternoon,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> We are new to the DSS system configurations. Reviewing the configuration I have seen that the default pagepool is set to this value:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><strong><span style="font-family:"Arial",sans-serif;color:black"> pagepool 323908133683</span></strong><span style="font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">But not only in the DSS servers, but also in the rest of the HPC nodes and I don't know if it is an excessive value. We are noticing that some jobs are dying by "Memory cgroup out
of memory: Killed process XXX", and my doubt is if this pagepool is reserving too much memory for the mmfs process in decripento of the execution of jobs.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Any advice is welcomed,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Regards, I<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">-- <o:p>
</o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><br>
================================================================<br>
Ibán Cabrillo Bartolomé<br>
Instituto de Física de Cantabria (IFCA-CSIC)<br>
Santander, Spain<br>
Tel: +34942200969/+34669930421<br>
Responsible for advanced computing service (RSC)<br>
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