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Hi Joseph,<br>
<br>
This might depend on the rest of your configuration, but in general
swap should not be needed for anything on Linux.<br>
BUT: you might get OOM killer messages in your system logs, and
SLURM might fall victim to the OOM killer (OOM = Out Of Memory) if
you run applications on the compute node that eat up all your RAM. <br>
Swap does not prevent against this, but makes it less likely to
happen. I've seen OOM kill slurm daemon processes on compute nodes
with swap, usually slurm recovers just fine after the application
that ate up all the RAM ends up getting killed by the OOM killer. My
compute nodes are not configured to monitor memory usage of jobs. If
you have memory configured as a managed resource in your SLURM
setup, and you leave a bit of headroom for the OS itself (e.g. only
hand our a maximum of 250GB RAM to jobs on your 256GB RAM nodes),
you should be fine.<br>
<br>
cheers,<br>
Hans<br>
<br>
<br>
ps. I'm just a happy slurm user/admin, not an expert, so I might be
wrong about everything :-)<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 06-12-2023 05:57, John Joseph wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1071652481.762017.1701838651257@mail.yahoo.com">
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<div>Dear All, </div>
<div>Good morning </div>
<div>We have 4 node [256 GB Ram in each node] SLURM
instance with which we installed and it is working fine. </div>
<div>We have 2 GB of SWAP space on each node, for some
purpose to make the system in full use want to disable
the SWAP memory, </div>
<div><br>
</div>
<div>Like to know if I am disabling the SWAP partition will
it efffect SLURM functionality . </div>
<div><br>
</div>
<div>Advice requested</div>
<div>Thanks </div>
<div>Joseph John </div>
</div>
<br>
</div>
</div>
</blockquote>
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