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slgrep

A pgrep-style job filter tool for Slurm.

Slurm's squeue command is useful, but lacks some features I always missed, for example simply searching jobs by name. That's why I wrote this little script. It is similar to pgrep in the sense that it outputs the Slurm job IDs of matching jobs line by line, by default. It is also capable of outputting any number of fields of a Slurm job by supplying a format string.

Jobs can be filtered by

  • regex of the job name
  • user
  • partition
  • job state
  • runtime

and any combination of the above.

Prerequisites

  • Python 3
  • PySlurm (pip install --user pyslurm)

Usage

usage: slgrep [-h] [-u USER] [-U] [-p PARTITION] [-t RUNTIME] [-r] [-w] [-l]
              [-c] [-f FORMAT] [-A]
              [expr]

like pgrep, but for slurm jobs. without any arguments, prints job IDs of all
running or queued jobs of all users

positional arguments:
  expr                  regex to match the job names against

optional arguments:
  -h, --help            show this help message and exit
  -u USER, --user USER  only show jobs of specified user
  -U, --current-user    only show jobs of current user
  -p PARTITION, --partition PARTITION
                        only show jobs on specified partition
  -t RUNTIME, --runtime RUNTIME
                        only show jobs with a specified runtime in minutes.
                        format is similar to cut, eg 5-10, -3 (equal to 3), 1-
                        are all valid ranges (and show jobs running for 5-10
                        min, <= 3 min and >= 1 min, respectively)
  -r, --running         only show running jobs
  -w, --pending         only show pending jobs
  -l, --list            print extended job information, see -f/--format
  -c, --count           print a count of results instead
  -f FORMAT, --format FORMAT
                        format string to use for -l/--list, see
                        -A/--available-fields, default: "job_id name"
  -A, --available-fields
                        print a list of fields that can be specified in
                        -f/--format

Tips

Filtering by runtime

Runtime filtering is pretty useful I think, as this is sometimes the only clear discriminator of some group of jobs versus another. For example, the following command will display the executing user's jobs with a runtime <= 5 minutes:

slgrep -Ut -5

Changing partitions

Another usecase is further processing of the output using xargs. For example, I often use this to change the partitions of submitted jobs:

slgrep -Uwp c0 | xargs -I {} scontrol update jobid={} partition=c1

This will move all jobs of the executing user pending on partition c0 to partition c1.

Canceling jobs

Cancel all jobs on partition c0 matching the regex ^long_job_no_\d+$:

slgrep -p c0 "^long_job_no_\d+$" | xargs scancel

I suggest you play around with the options. You will discover your personal favourites. For example, you could build a custom output format as your personal replacement for squeue.