Runs an executable file. It is really intended to be used from within sbatch scripts. Used within a script, each invocation of srun starts a new job step (terminology you will see in the slurm documentation).

Runs the job in the foreground (and blocks unless you use “&”).

If you use srun directly (in a login terminal) your job will end if you close your terminal, unless you redirect IO and disown the job.

srun hostname

srun -n3 hostname (runs 3 tasks: copies of the program specified, may run on the same node) srun -n20 hostname (runs 20 tasks, will run on multiple nodes)

srun -N3 hostname (runs on 3 different nodes)

srun -u bash -i

• Runs an interactive shell on a compute node.
• It's a little odd, but it does work.

srun long-job > srun.out 2>&1 &
disown