[slurm-users] limiting memory usage when submission doesn't specify memory requirements?

Matthias Leopold matthias.leopold at meduniwien.ac.at
Fri Apr 23 08:12:19 UTC 2021

Thanks for pointing me to DefMemPerCPU. This is the obvious solution, I 
somehow overlooked that.


Am 22.04.21 um 21:01 schrieb Sarlo, Jeffrey S:
> In our configuration we have DefMemPerCPU=1024 as part of the partition 
> definition.
> I don't know the answer to your question if that is expected behavior, 
> but it would keep you from having to do something with a plugin.
> Jeff
> ------------------------------------------------------------------------
> *From:* slurm-users <slurm-users-bounces at lists.schedmd.com> on behalf of 
> Matthias Leopold <matthias.leopold at meduniwien.ac.at>
> *Sent:* Thursday, April 22, 2021 5:13 AM
> *To:* Slurm User Community List <slurm-users at lists.schedmd.com>
> *Subject:* [slurm-users] limiting memory usage when submission doesn't 
> specify memory requirements?
> Hi,
> I'm testing how limiting memory resources works in Slurm.
> I'm using TaskPlugin=affinity,cgroup (slurm.conf) and
> ConstrainRAMSpace=yes (cgroup.conf) and have set a MaxMemPerCPU limit on
> the partition.
> To my surprise MaxMemPerCPU is enforced as long as the job submission
> requests a memory limit (like --mem-per-cpu), but isn't enforced when
> job submission doesn't request a memory limit. Is this really expected
> behaviour? How do I constrain these jobs? Force requesting memory limit
> with submission plugin?
> thx
> Matthias

Matthias Leopold
IT Systems & Communications
Medizinische Universität Wien
Spitalgasse 23 / BT 88 /Ebene 00
A-1090 Wien
Tel: +43 1 40160-21241
Fax: +43 1 40160-921200

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