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Long Jobs

If you are confident that your jobs will last more than 2 days while efficiently using the allocated resources, you can use --qos long QOS.

sbatch -p {batch | gpu | bigmem} --qos long [...]

Following EuroHPC/PRACE Recommendations, the long QOS allow for an extended Max walltime (MaxWall) set to 14 days.

Node Type Slurm command
regular sbatch [-A <project>] -p batch --qos long [-C {broadwell,skylake}] [...]
gpu sbatch [-A <project>] -p gpu --qos long [-C volta[32]] -G 1 [...]
bigmem sbatch [-A <project>] -p bigmem --qos long [...]

Important

Be aware however that special restrictions applies for this kind of jobs.

  • There is a limit to the maximum number of concurrent nodes involved in long jobs (see sqos for details).
  • No more than 4 long jobs per User (MaxJobsPU) are allowed, using no more than 2 nodes per jobs.

Last update: February 14, 2021