Not sure if you can do all the things you intend, but the job_submit
script is precisely where you want to check submission options.
https://slurm.schedmd.com/job_submit_plugins.html
Brian Andrus
On 8/30/2022 12:58 PM, Davide DelVento wrote:
Hi,
I would like to soft-enforce license utilization only when the -L is
set. My idea: check in the prolog if the license was requested and
only if it were, set the environmental variables needed for the
license.
I looked at all environmental variables set by slurm and did not find
any related to the license as I was hoping.
As a workaround, I could check
scontrol show job $SLURM_JOB_ID | grep License
and that would work, but (as discussed in other messages in this list)
the documentation at https://slurm.schedmd.com/prolog_epilog.html say
Prolog and Epilog scripts should be designed to be as short as possible
and should not call Slurm commands (e.g. squeue, scontrol, sacctmgr,
etc). [...] Slurm commands in these scripts can potentially lead to performance
issues and should not be used.
This is a bit of a concern, since the prolog would be invoked for
every job on the cluster, and it's a prolog (rather than the epilogue
like discussed in earlier messages).
So two questions:
1) is there a better workaround to check in the prolog if the current
job requested a license and/or
2) would this kind of use of scontrol be okay or is indeed a concern
Thanks!
