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--></style></div><div><span class="tlid-translation translation" lang="en"><span title="">Hello,</span><br><br><span title="">Thank you for your answers.</span> </span></div><div><span class="tlid-translation translation" lang="en"><span title="" class=""><br data-mce-bogus="1"></span></span></div><div><span class="tlid-translation translation" lang="en"><span title="" class="">I did not succeed to make the faq proposal (Question 30 note).</span> <span title="" class="">I think I succeeded by cheating like this:</span></span></div><div><br></div><div><span style="font-family: 'Arial',sans-serif; color: black;" data-mce-style="font-family: 'Arial',sans-serif; color: black;">NodeName=DEFAULT Boards=1 SocketsPerBoard=2 CoresPerSocket=36 ThreadsPerCore=1 RealMemory=128000</span></div><div><span style="font-family: 'Arial',sans-serif; color: black;" data-mce-style="font-family: 'Arial',sans-serif; color: black;"><br data-mce-bogus="1"></span></div><div><span style="font-family: 'Arial',sans-serif; color: black;" data-mce-style="font-family: 'Arial',sans-serif; color: black;">Regards.<br data-mce-bogus="1"></span></div><div><span style="font-family: 'Arial',sans-serif; color: black;" data-mce-style="font-family: 'Arial',sans-serif; color: black;"><br data-mce-bogus="1"></span></div><div><span style="font-family: 'Arial',sans-serif; color: black;" data-mce-style="font-family: 'Arial',sans-serif; color: black;">Jean-Mathieu<br data-mce-bogus="1"></span></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>De: </b>"Doug Meyer" <dameyer@raytheon.com><br><b>À: </b>"Slurm User Community List" <slurm-users@lists.schedmd.com><br><b>Envoyé: </b>Jeudi 2 Mai 2019 16:15:30<br><b>Objet: </b>Re: [slurm-users] How should I do so that jobs are allocated to the thread and not to the core ?<br></blockquote></div><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Had same problem in slurm 15, not sure if it affects newer versions. Don’t use the expanded node definition</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">NodeName = DEFAULT Boards = 1 SocketsPerBoard = 2 CoresPerSocket = 18 ThreadsPerCore = 2 RealMemory = 128000</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Use the simpler</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">NodeName=DEFAULT Cores=36 RealMemory = 128000</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Slurm will use both logical threads and not just the physical.
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Doug
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">“To err is human – and to blame it on a computer is even more so.” Robert Orben</span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> slurm-users <slurm-users-bounces@lists.schedmd.com>
<b>On Behalf Of </b>Benjamin Redling<br>
<b>Sent:</b> Thursday, May 2, 2019 3:49 AM<br>
<b>To:</b> Slurm User Community List <slurm-users@lists.schedmd.com><br>
<b>Subject:</b> [External] Re: [slurm-users] How should I do so that jobs are allocated to the thread and not to the core ?</span></p>
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<p class="MsoNormal"> </p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Have you Seen the slurm FAQ?<br>
You may want to search on that site for "Hyperthreading"<br>
<br>
(Sorry for the TOFU. vacation, mobile)</p>
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<p class="MsoNormal">Am 30. April 2019 18:07:03 MESZ schrieb Jean-mathieu CHANTREIN <<a href="mailto:jean-mathieu.chantrein@univ-angers.fr" target="_blank">jean-mathieu.chantrein@univ-angers.fr</a>>:</p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Hello,</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Most jobs of my users are single-thread. I have multithreaded processors. The jobs seem to reserve 2 logical CPU (1 core=2 CPU (2 threads)) whereas it only uses 1 logical CPU(1 thread).
Nevertheless, my slurm.conf file indicates:</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">[...]<br>
SelectType = select / cons_res<br>
SelectTypeParameters = CR_CPU<br>
FastSchedule = 1<br>
[...]<br>
NodeName = DEFAULT Boards = 1 SocketsPerBoard = 2 CoresPerSocket = 18 ThreadsPerCore = 2 RealMemory = 128000<br>
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And here is an excerpt from the output of a job running on this type of node:<br>
$ scontrol show job idjob</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">[...]</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> NumNodes=1 NumCPUs=1 NumTasks=1 CPUs/Task=1 ReqB:S:C:T=0:0:*:*<br>
TRES=cpu=1,mem=200M,node=1,billing=1<br>
Socks/Node=* NtasksPerN:B:S:C=0:0:*:* CoreSpec=*<br>
MinCPUsNode=1 MinMemoryCPU=200M MinTmpDiskNode=0<br>
Features=(null) DelayBoot=00:00:00<br>
OverSubscribe=OK Contiguous=0 Licenses=(null) Network=(null)<br>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">But with
<a href="https://github.com/OleHolmNielsen/Slurm_tools/tree/master/pestat" target="_blank">pestat
</a>, I can see my node use 72/72 CPU but have only 36 job running like this one.
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">How should I do so that jobs are allocated to the thread and not to the core ?</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Best regards.</span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"> </span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Jean-Mathieu</span></p>
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-- <br>
Diese Nachricht wurde von meinem Android-Gerät mit K-9 Mail gesendet.</p>
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