[slurm-users] CPUSpecList confusion

Sean Maxwell stm at case.edu
Mon Dec 12 15:21:33 UTC 2022


Hi Paul,

Nodename=foobar \
>    CPUs=64 Boards=1 SocketsPerBoard=2 CoresPerSocket=16 ThreadsPerCore=2 \
>    RealMemory=256312 MemSpecLimit=32768 CpuSpecList=14-63 \
>    TmpDisk=6000000 Gres=gpu:nvidia_rtx_a6000:1
>
> The slurm.conf also has:
>
> ProctrackType=proctrack/cgroup
> TaskPlugin=task/affinity,task/cgroup
> TaskPluginParam=Cores,*SlurmdOf**fSpec*,Verbose
>

Doesn't setting SlurmdOffSpec tell Slurmd that is should NOT use the CPUs
in the spec list? (
https://slurm.schedmd.com/slurm.conf.html#OPT_SlurmdOffSpec)
In this case, I believe it uses what is left, which is the 0-13. We are
just starting to work on this ourselves, and were looking at this setting.

Best,

-Sean
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