qsub run_script is used to submit a job script for later execution. The script will typically contain one or more srun commands to launch parallel tasks.
qdel job_id is used to cancel a pending or running job or job step. It can also be used to send an arbitrary signal to all processes associated with a running job or job step.
qstat reports the state of jobs or job steps. It has a wide variety of filtering, sorting, and formatting options. By default, it reports the running jobs in priority order and then the pending jobs in priority order.