On 10/7/24 12:28, Cutts, Tim wrote:
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.
I see what you mean. The squeue command can print job priority and a lot
of other things as defined under the "-O" option. I set this variable to
personalize my desired columns:
export SQUEUE_FORMAT2="JobID:8,Partition:15,QOS:7,Name:10
,UserName:9,Account:11,State:8,PriorityLong:9,ReasonList:16 ,TimeUsed:12
,SubmitTime:19 ,TimeLimit:10 ,tres-alloc: "
You can also use "scontrol show job <jobid>".
In https://slurm.schedmd.com/job_array.html you can see that sprio doesn't
handle job arrays yet:
The following Slurm commands do not currently recognize job arrays and their use requires
the use of Slurm job IDs, which are unique for each array element: sbcast, sprio,
sreport, sshare and sstat. The sacct, sattach and strigger commands have been modified to
permit specification of either job IDs or job array elements. The sview command has been
modified to permit display of a job's ArrayJobId and ArrayTaskId fields. Both fields are
displayed with a value of "N/A" if the job is not part of a job array.
Also, there are a couple of hints in this Wiki page:
https://wiki.fysik.dtu.dk/Niflheim_system/Slurm_operations/#job-arrays
/Ole
*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
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