[slurm-users] Node is not allocating all CPUs

[Guertin, David S.]

slurm.conf contains the following:

SelectType=select/cons_tres
SelectTypeParameters=CR_Core
AccountingStorageTRES=gres/gpu

Could this be constraining CgfTRES=cpu=16 somehow?

David Guertin
________________________________
From: Guertin, David S. <guertin at middlebury.edu>
Sent: Wednesday, April 6, 2022 12:27 PM
To: Slurm User Community List <slurm-users at lists.schedmd.com>
Subject: Re: [slurm-users] Node is not allocating all CPUs

No, the user is submitting four jobs, each requesting 1/4 of the memory and 1/4 of the CPUs (i.e. 8 out of 32). But even though there are 32 physical cores, Slurm only shows 16 as trackable resources:

>From scontrol show node node020:

CfgTRES=cpu=16,mem=257600M,billing=16,gres/gpu=4

Why would the number of trackable resources be different from the number of actual CPUs?

David Guertin

________________________________
From: slurm-users <slurm-users-bounces at lists.schedmd.com> on behalf of Sarlo, Jeffrey S <JSarlo at Central.UH.EDU>
Sent: Wednesday, April 6, 2022 10:30 AM
To: Slurm User Community List <slurm-users at lists.schedmd.com>
Subject: Re: [slurm-users] Node is not allocating all CPUs


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



Jeff


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