[slurm-users] Memory per CPU

Luecht, Jeff A jeff.luecht at pnc.com
Tue Sep 29 13:54:10 UTC 2020

I am working on my first ever SLURM cluster build for use as a resource manager in a JupyterHub Development environment.  I have configured the cluster for SelectType of 'select/con_res' with DefMemPerCPU and MaxMemPerCPU of 16Gb.  The idea is to essentially provide for jobs that run in a 1 CPU/16Gb chunks.  This is a starting point for us.

What I am seeing is that when users submit jobs and ask for memory only  - in this case, 16Gb, SLURM actually allocates 2 CPUs, not 1 that I would expect.  Is my understanding of how this particular configuration works incorrect?

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