The format has changed a bit, since none of our RawShares column is ‘parent’.
But you can test this to be certain.
If your cluster already has jobs pending, have bsmith (who has zero usage) and csmith (who has a lot of usage, relatively) each submit several jobs into the pending queue. Alternatively, have bsmith and csmith
submit jobs with larger resource requests: jobs that are large enough to automatically go into a pending state due to lack of resources. Those might be jobs that request the whole cluster, even.
bsmith’s jobs should get a higher priority as seen from sprio, and bsmith’s jobs should start earlier than csmith’s.
From:
Drucker, Daniel <DDRUCKER@MCLEAN.HARVARD.EDU>
Date: Friday, August 9, 2024 at 3:11 PM
To: Renfro, Michael <Renfro@tntech.edu>
Cc: slurm-users@lists.schedmd.com <slurm-users@lists.schedmd.com>
Subject: Re: [slurm-users] FairShare if there's only one account?
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Looks like this:
Account User RawShares NormShares RawUsage EffectvUsage FairShare
-------------------- ---------- ---------- ----------- ----------- ------------- ----------
mic 120 0.991736 55524598 1.000000
mic asmith parent 0.991736 2532311 0.045607 0.983871
mic bsmith parent 0.991736 0 0.000000 0.983871
mic csmith parent 0.991736 3265529 0.058805 0.983871
mic djones parent 0.991736 0 0.000000 0.983871
mic ejones parent 0.991736 2210952 0.039820 0.983871
On Aug 9, 2024, at 4:05 PM, Renfro, Michael via slurm-users <slurm-users@lists.schedmd.com> wrote:
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I don’t have any 21.08 systems to verify with, but that’s how I remember it. Use “sshare -a -A mic” to verify. You should see both a RawShares and a NormShares column for each user. By default they’ll all
have the same value, but they can be adjusted if needed.
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Does FairShare still work if every user is under one account? E.g.:
$ sacctmgr show assoc format=Account,User
Will it divide time up fairly between the users? I have:
PriorityType=priority/multifactor
PriorityWeightFairshare=100000
--
Daniel M. Drucker, Ph.D.
Director of IT, MGB Imaging at Belmont
McLean Hospital, a Harvard Medical School Affiliate
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