[slurm-users] Providing users with info on wait time vs. run time

[Sebastian Potthoff]

Hi Loris

> We do something similar.  At the end of our script pointed to by
> EpilogSlurmctld we have

Using EpilogSlurmctld only works if the slurmctld user is root (or slurm with root privileges), right? I opted for the normal Epilog since we wanted to avoid running slurm as root and I don’t have to worry about ownership of the output file.

Sebastian


> Am 16.09.2022 um 09:09 schrieb Loris Bennett <loris.bennett at fu-berlin.de>:
> 
> Hi Hermann,
> 
> Sebastian Potthoff <s.potthoff at uni-muenster.de <mailto:s.potthoff at uni-muenster.de>> writes:
> 
>> Hi Hermann,
>> 
>> I happened to read along this conversation and was just solving this issue today. I added this part to the epilog script to make it work:
>> 
>> # Add job report to stdout
>> StdOut=$(/usr/bin/scontrol show job=$SLURM_JOB_ID | /usr/bin/grep StdOut | /usr/bin/xargs | /usr/bin/awk 'BEGIN { FS = "=" } ; { print $2 }')
>> 
>> NODELIST=($(/usr/bin/scontrol show hostnames))
>> 
>> # Only add to StdOut file if it exists and if we are the first node
>> if [ "$(/usr/bin/hostname -s)" = "${NODELIST[0]}" -a ! -z "${StdOut}" ]
>> then
>>  echo "################################# JOB REPORT ##################################" >> $StdOut
>>  /usr/bin/seff $SLURM_JOB_ID >> $StdOut
>>  echo "###############################################################################" >> $StdOut
>> fi
> 
> We do something similar.  At the end of our script pointed to by
> EpilogSlurmctld we have
> 
>  OUT=`scontrol show jobid ${job_id} | awk -F= '/ StdOut/{print $2}'`
>  if [ ! -f "$OUT" ]; then
>    exit
>  fi
> 
>  printf "\n== Epilog Slurmctld ==================================================\n\n" >>  ${OUT}
> 
>  seff ${SLURM_JOB_ID} >> ${OUT}
> 
>  printf "\n======================================================================\n" >>  ${OUT}
> 
>  chown ${user} ${OUT}
> 
> Cheers,
> 
> Loris
> 
>>  Contrary to what it says in the slurm docs https://slurm.schedmd.com/prolog_epilog.html  I was not able to use the env var SLURM_JOB_STDOUT, so I had to fetch it via scontrol. In addition I had to
>> make sure it is only called by the „leading“ node as the epilog script will be called by ALL nodes of a multinode job and they would all call seff and clutter up the output. Last thing was to check if StdOut is
>> not of length zero (i.e. it exists). Interactive jobs would otherwise cause the node to drain.
>> 
>> Maybe this helps. 
>> 
>> Kind regards
>> Sebastian
>> 
>> PS: goslmailer looks quite nice with its recommendations! Will definitely look into it.
>> 
>> --
>> Westfälische Wilhelms-Universität (WWU) Münster
>> WWU IT
>> Sebastian Potthoff (eScience / HPC)
>> 
>> Am 15.09.2022 um 18:07 schrieb Hermann Schwärzler <hermann.schwaerzler at uibk.ac.at>:
>> 
>> Hi Ole,
>> 
>> On 9/15/22 5:21 PM, Ole Holm Nielsen wrote:
>> 
>> On 15-09-2022 16:08, Hermann Schwärzler wrote:
>> 
>> Just out of curiosity: how do you insert the output of seff into the out-file of a job?
>> 
>> Use the "smail" tool from the slurm-contribs RPM and set this in slurm.conf:
>> MailProg=/usr/bin/smail
>> 
>> Maybe I am missing something but from what I can tell smail sends an email and does *not* change or append to the .out file of a job...
>> 
>> Regards,
>> Hermann

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