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<p>I don't think the RAM footprint of a properly configured Linux OS
is much of a concern on a compute node these days. And by
properly configured I mean unnecessary packages are not installed,
and unnecessary services are not started in the first place. When
I configure an OS install for a cluster, I go through every
package one-at-a-time and determine whether or not I need it on a
cluster node. <br>
</p>
<p>A bigger concern would be being able to disable as many
unnecessary resources as possible to reduce OS overhead and
therefore reduce 'OS jitter' in job performance. It amazes me with
each new version of a distro how many more services seem to need
to be running that you can't easily remove. <br>
</p>
<p>Prentice<br>
</p>
<div class="moz-cite-prefix">On 2/1/21 9:46 AM, Jonathan Aquilina
via Beowulf wrote:<br>
</div>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi
Tim,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I
am asking from the non container side. If one wants to go
bare metal wouldn’t that lower ram footprint that alpine
provides be advantageous so you can maximize resource usage
for what you want to crunch?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Jonathan<o:p></o:p></p>
</div>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
lang="EN-US"> Tim Cutts <a class="moz-txt-link-rfc2396E" href="mailto:tjrc@sanger.ac.uk"><tjrc@sanger.ac.uk></a>
<br>
<b>Sent:</b> 01 February 2021 15:43<br>
<b>To:</b> Jonathan Aquilina
<a class="moz-txt-link-rfc2396E" href="mailto:jaquilina@eagleeyet.net"><jaquilina@eagleeyet.net></a><br>
<b>Cc:</b> Beowulf <a class="moz-txt-link-rfc2396E" href="mailto:beowulf@beowulf.org"><beowulf@beowulf.org></a><br>
<b>Subject:</b> Re: [Beowulf] apline linux [EXT]<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The only place I regularly encounter is in
containers, so people who are running singularity might find
their users are using alpine in a way they can’t easily see.
Presumably the libm point Janne made applies in the container
context as well, since the application will presumably be
using the container’s libm, not the host node’s library.
<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Tim<o:p></o:p></p>
<div>
<div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">On 30 Jan 2021, at 05:56,
Jonathan Aquilina via Beowulf <<a
href="mailto:beowulf@beowulf.org"
moz-do-not-send="true">beowulf@beowulf.org</a>>
wrote:<o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">Hey guys,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Recently been giving alpine
linux a try. I am super impressed on virtualized
version of it what a low ram footprint it has 60mb
starting. What do you guys think when it comes to
alpine linux in the HPC space?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Regards,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Jonathan<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<p class="MsoNormal"><span
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- The Wellcome Sanger Institute is
operated by Genome Research Limited, a charity registered in
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<pre class="moz-signature" cols="72">--
Prentice Bisbal
Lead Software Engineer
Research Computing
Princeton Plasma Physics Laboratory
<a class="moz-txt-link-freetext" href="http://www.pppl.gov">http://www.pppl.gov</a></pre>
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