[slurm-users] Problem with cgroup plugin in Ubuntu22.04 and slurm 21.08.5

Angel de Vicente angel.de.vicente at iac.es
Fri Apr 21 17:16:07 UTC 2023


Michael Gutteridge <michael.gutteridge at gmail.com> writes:

> Does this link help? 
>> Debian and derivatives (e.g. Ubuntu) usually exclude the memory and 
>> memsw (swap) cgroups by default. To include them, add the following 
>> parameters to the kernel command line: cgroup_enable=memory swapaccount=1

In the old machine (Ubuntu 18.04) we don't set those kernel parameters
and Slurm seems to have no issues with Cgroups? (what happens if those
are not defined? Would you get something like what I was reporting, that
the plugin cannot be loaded, or simply that cgroup would not be able to
enforce memory policies?)

> I'm using Bionic (18) and after applying those changes it seems to be
> working OK for me. I don't believe that Ubuntu has changed memory
> cgroup configuration between 18 and 22, but we're only starting to use
> 22.

I see that there are some differences in cgroup between 18.04 and 22.04,
but I don't understand them well enough to be able to figure out what
could be the issue...

Ángel de Vicente
 Research Software Engineer (Supercomputing and BigData)
 Tel.: +34 922-605-747
 Web.: http://research.iac.es/proyecto/polmag/

 GPG: 0x8BDC390B69033F52
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