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<p>Nope per the documentation you have to restart the slurmctld to
change MaxJobCount.</p>
<p>-Paul Edmon-<br>
</p>
<div class="moz-cite-prefix">On 1/31/19 5:58 AM, Buckley, Ronan
wrote:<br>
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<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">I
want to increase the MaxJobCount in the slurm.conf file from
its default value of 10,000. I want to increase it to
250,000.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">The
online documentation says:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">MaxJobCount<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">The
maximum number of jobs Slurm can have in its active database
at one time. Set the values of MaxJobCount and MinJobAge to
ensure the slurmctld daemon does not exhaust its memory or
other resources. Once this limit is reached, requests to
submit additional jobs will fail. The default value is 10000
jobs. NOTE: Each task of a job array counts as one job even
though they will not occupy separate job records until
modified or initiated. Performance can suffer with more than
a few hundred thousand jobs.
<b><u>Setting per MaxSubmitJobs per user is generally
valuable to prevent a single user from filling the
system with jobs. This is accomplished using Slurm's
database and configuring enforcement of resource limits.
This value may not be reset via "scontrol reconfig". It
only takes effect upon restart of the slurmctld daemon.<o:p></o:p></u></b></span></p>
<p class="MsoNormal" style="margin-left:.5in"><b><u><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif"><o:p><span
style="text-decoration:none"> </span></o:p></span></u></b></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">My
assumption is that a restart of the slurmctld daemon is only
needed if “Setting per MaxSubmitJobs per user”, which would
be done by updating the slurm database.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">To
just update the value of the MaxJobCount in the slurm.conf
file, I assume I edit the slurm.conf file with the new value
and run a ‘scontrol reconfigure’ to update it. That is all
that is needed, right??<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Rgds<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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