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.
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.
Prentice
On 2/1/21 9:46 AM, Jonathan Aquilina via Beowulf wrote:
Hi Tim,
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?
Regards,
Jonathan
*From:*Tim Cutts <t...@sanger.ac.uk>
*Sent:* 01 February 2021 15:43
*To:* Jonathan Aquilina <jaquil...@eagleeyet.net>
*Cc:* Beowulf <beowulf@beowulf.org>
*Subject:* Re: [Beowulf] apline linux [EXT]
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.
Tim
On 30 Jan 2021, at 05:56, Jonathan Aquilina via Beowulf
<beowulf@beowulf.org <mailto:beowulf@beowulf.org>> wrote:
Hey guys,
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?
Regards,
Jonathan
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