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

Matthias Leopold matthias.leopold at meduniwien.ac.at
Thu Apr 22 10:13:30 UTC 2021


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?


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