[slurm-users] Array jobs vs Fairshare

[Stephan Schott]

Oh, sure, sorry.
We are using slurm 18.08.8, with a backfill scheduler. The jobs are being
assigned to the same partition, which limits gpus and cpus to 1 via QOS.
Here some of the main flags:

SallocDefaultCommand="srun -n1 -N1 --mem-per-cpu=0 --gres=gpu:0 --pty
--preserve-env --mpi=none $SHELL"
TaskPlugin=task/affinity,task/cgroup
TaskPluginParam=Sched
MinJobAge=300
FastSchedule=1
SchedulerType=sched/backfill
SelectType=select/cons_res
SelectTypeParameters=CR_CPU_Memory
PreemptType=preempt/qos
PreemptMode=requeue
PriorityType=priority/multifactor
PriorityFlags=FAIR_TREE
PriorityFavorSmall=YES
FairShareDampeningFactor=5
PriorityWeightAge=1000
PriorityWeightFairshare=5000
PriorityWeightJobSize=1000
PriorityWeightPartition=1000
PriorityWeightQOS=5000
PriorityWeightTRES=gres/gpu=1000
AccountingStorageEnforce=limits,qos,nosteps
AccountingStorageTRES=gres/gpu
AccountingStorageHost=localhost
AccountingStorageType=accounting_storage/slurmdbd
JobCompType=jobcomp/none
JobAcctGatherFrequency=30
JobAcctGatherType=jobacct_gather/cgroup

Any ideas?

Cheers,

El mié., 21 oct. 2020 a las 15:17, Riebs, Andy (<andy.riebs at hpe.com>)
escribió:

> Also, of course, any of the information that you can provide about how the
> system is configured: scheduler choices, QOS options, and the like, would
> also help in answering your question.
>
>
>
> *From:* slurm-users [mailto:slurm-users-bounces at lists.schedmd.com] *On
> Behalf Of *Riebs, Andy
> *Sent:* Wednesday, October 21, 2020 9:02 AM
> *To:* Slurm User Community List <slurm-users at lists.schedmd.com>
> *Subject:* Re: [slurm-users] Array jobs vs Fairshare
>
>
>
> Stephan (et al.),
>
>
>
> There are probably 6 versions of Slurm in common use today, across
> multiple versions each of Debian/Ubuntu, SuSE/SLES, and
> RedHat/CentOS/Fedora. You are more likely to get a good answer if you offer
> some hints about what you are running!
>
>
>
> Regards,
>
> Andy
>
>
>
> *From:* slurm-users [mailto:slurm-users-bounces at lists.schedmd.com
> <slurm-users-bounces at lists.schedmd.com>] *On Behalf Of *Stephan Schott
> *Sent:* Wednesday, October 21, 2020 8:37 AM
> *To:* Slurm User Community List <slurm-users at lists.schedmd.com>
> *Subject:* [slurm-users] Array jobs vs Fairshare
>
>
>
> Hi everyone,
>
> I am having doubts regarding array jobs. To me it seems that the
> JobArrayTaskLimit has precedence over the Fairshare, as users with a way
> lower priority seem to get constant allocations for their array jobs,
> compared to users with "normal" jobs. Can someone confirm this?
>
> Cheers,
>
>
> --
>
> Stephan Schott Verdugo
>
> Biochemist
>
>
> Heinrich-Heine-Universitaet Duesseldorf
> Institut fuer Pharm. und Med. Chemie
> Universitaetsstr. 1
> 40225 Duesseldorf
> Germany
>


-- 
Stephan Schott Verdugo
Biochemist

Heinrich-Heine-Universitaet Duesseldorf
Institut fuer Pharm. und Med. Chemie
Universitaetsstr. 1
40225 Duesseldorf
Germany
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