[slurm-users] Reset FairShare?

Paul Edmon pedmon at cfa.harvard.edu
Mon Jul 27 18:20:49 UTC 2020

You want this handy feature in sacctmgr:

    This allows an administrator to reset the raw usage accrued to an
    account. The only value currently supported is 0 (zero). This is a
    settable specification only - it cannot be used as a filter to list



-Paul Edmon-

On 7/27/2020 2:17 PM, Jason Simms wrote:
> Dear all,
> Apologies for the basic question. I've looked around online for an 
> answer to this, and I haven't found anything that has helped 
> accomplish exactly what I want. That said, it is also probable that 
> what I am asking isn't a best practice, or isn't actually necessary, 
> etc. I'd welcome any advice.
> My question is, how can I reset a user's FairShare number? 
> Specifically, I'm asking about the last column displayed by default 
> when typing: sshare -a
> If I want to reset a user's value for that to 1, so that they are back 
> at "top priority," I'm unclear how to do that.
> When I type:
> sacctmgr modify user <username> set FairShare=1
> That seems actually to update the RawShares column! I guess this (kind 
> of) makes sense, since apparently I can set FairShare=parent, so it's 
> clear that command is not used to update the last column (the one 
> titled FairShare); so confusing!
> Is the actual FairShare column a calculated value that is immutable? 
> My understanding, however, is that it is that value that controls a 
> user's job priority. We do have job priority scheduling configured and 
> it *seems* to be working as intended, I'm just not sure how to "reset" 
> a given user's priority weighting.
> I do have PriorityDecayHalfLife=7 set in slurm.conf, and this does 
> decrement the RawUsage column appropriately, but even when that 
> reaches 0, the FairShare value doesn't change.
> Warmest regards,
> Jason
> -- 
> *Jason L. Simms, Ph.D., M.P.H.*
> Manager of Research and High-Performance Computing
> XSEDE Campus Champion
> Lafayette College
> Information Technology Services
> 710 Sullivan Rd | Easton, PA 18042
> Office: 112 Skillman Library
> p: (610) 330-5632
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