[slurm-users] Node is not allocating all CPUs

Sarlo, Jeffrey S JSarlo at Central.UH.EDU
Wed Apr 6 14:30:11 UTC 2022

Are the jobs getting assigned memory amounts that would only allow 16 processors to be used when the jobs are running on the node?


From: slurm-users [mailto:slurm-users-bounces at lists.schedmd.com] On Behalf Of Guertin, David S.
Sent: Wednesday, April 6, 2022 9:21 AM
To: slurm-users at lists.schedmd.com
Subject: Re: [slurm-users] Node is not allocating all CPUs

Thanks. That shows 32 cores, as expected:

# /cm/shared/apps/slurm/19.05.8/sbin/slurmd -C
NodeName=node020 CPUs=32 Boards=1 SocketsPerBoard=2 CoresPerSocket=16 ThreadsPerCore=1 RealMemory=257600

But I can't understand why when users submit jobs, the node is only allocating 16.

David Guertin

From: slurm-users <slurm-users-bounces at lists.schedmd.com<mailto:slurm-users-bounces at lists.schedmd.com>> on behalf of Brian Andrus <toomuchit at gmail.com<mailto:toomuchit at gmail.com>>
Sent: Tuesday, April 5, 2022 6:14 PM
To: slurm-users at lists.schedmd.com<mailto:slurm-users at lists.schedmd.com> <slurm-users at lists.schedmd.com<mailto:slurm-users at lists.schedmd.com>>
Subject: Re: [slurm-users] Node is not allocating all CPUs

You want to see what is output on the node itself when you run:

slurmd -C

Brian Andrus

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