qdel may be used by any user to delete their own jobs. qdel may be used to delete an entire job array or just one job from an array. Managers and
operators may use qdel to delete any job or all jobs. If a running job cannot be deleted
because one or more of its allocated nodes are unavailable, the '-p' option may be
used to forcibly purge the job from the pbs_server queues. The '-p'
option is only available to administrators and operators.