[slurm-users] "--batch" option of the sbatch command
loris.bennett at fu-berlin.de
Wed Oct 2 06:23:29 UTC 2019
"Uemoto, Tomoki" <fj2770fj at aa.jp.fujitsu.com> writes:
> I'm working with slurm 18.08.6 on RHEL7.6
> manager : 1node
> computes: 2nodes (c001:haswell,c002:broadwell)
> I am checking the --batch option of the sbatch command.
> The following Features were set for testing.
> # scontrol update nodename=c001 Features=haswell
> # scontrol update nodename=c002 Features=broadwell
> And submitted a sleep job.
> $ cat sleep_60.sh
> #SBATCH -J sleep_60 # Job name
> #SBATCH -o job.%j.out # Name of stdout output file (%j expands to jobId)
> prun sleep 60
> $ sbatch --batch=broadwell --constraint="haswell|broadwell" sleep_60.sh
> $ squeue -l
> Wed Oct 2 13:50:40 2019
> JOBID PARTITION NAME USER STATE TIME TIME_LIMI NODES NODELIST(REASON)
> 28 normal sleep_60 test RUNNING 0:03 1-00:00:00 1 c001
> I thought the job would be executed in "c002(broadwell)" by the designation of "--batch=broadwell".
> However the job was executed in "c001(haswell)"
> Why isn't it running on "c002(broadwell)" ?
I haven't come across this before, but the documentation seems to
indicate that the option '--batch' applies only to the batch step. The
actual job step, in your case the 'sleep' can then run on any node
satisfying the condition given via the option '--constraint', so in your
case either your Broadwell or you Haswell node.
However, I would have thought that, all things being equal, the batch
step and the job step would run on the same node. However, I'm not sure
how a constrain with 'or' is resolved if multiple solutions are
What happens if you write the constraint as
Dr. Loris Bennett (Mr.)
ZEDAT, Freie Universität Berlin Email loris.bennett at fu-berlin.de
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