[slurm-users] Re: Jobs not getting scheduled, no priority calculation, but still in queue?

I should be clear, the JobArrayTaskLimit isn’t the issue (the user’s submitted with %1, which is why we’re getting that). What I don’t understand is why the jobs remaining in the queue have no priority at all associated with them. It’s as though the scheduler has forgotten the job array exists altogether.

Tim

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From: Ole Holm Nielsen via slurm-users slurm-users@lists.schedmd.com Date: Monday, 7 October 2024 at 10:35 AM To: slurm-users@lists.schedmd.com slurm-users@lists.schedmd.com Subject: [slurm-users] Re: Jobs not getting scheduled, no priority calculation, but still in queue? Hi Tim,

On 10/7/24 11:13, Cutts, Tim via slurm-users wrote:

Something odd is going on on our cluster. User has a lot of pending jobs in a job array (a few thousand).

squeue -u kmnx005 -r -t PD | head -5

          JOBID PARTITION     NAME     USER ST       TIME  NODES

NODELIST(REASON)

    3045324_875      core run_scp_  kmnx005 PD       0:00      1

(JobArrayTaskLimit)

    3045324_876      core run_scp_  kmnx005 PD       0:00      1

(JobArrayTaskLimit)

    3045324_877      core run_scp_  kmnx005 PD       0:00      1

(JobArrayTaskLimit)

    3045324_878      core run_scp_  kmnx005 PD       0:00      1

(JobArrayTaskLimit)

None are getting scheduled. But when I ask SLURM what that job’s priority is, it produces no output:

$ sprio -j 3045324

       JOBID PARTITION   PRIORITY       SITE        AGE  FAIRSHARE

JOBSIZE PARTITION QOS TRES

Any clues what’s going on here?

What array limits do you have in slurm.conf? For example:

$ scontrol show config | grep -i array MaxArraySize = 1001

/Ole

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