If the Compute Node pbs_mom is lost and cannot be recovered (due to hardware or network failure) and to purge a running job from the qstat output or show

1. Shutdown the pbs_server daemon on the PBS Server

# service pbs_server stop

2. Remove Job Spool Files that holds the hanged JobID (For example 4444)

# rm /var/spool/torque/server_priv/jobs/4444.headnode.SC
# rm /var/spool/torque/server_priv/jobs/4444.headnode.JB

3. Start the pbs_Server Daemon

# service pbs_server start

4. Restart the MAUI Daemon

# service maui restart

References:

1. Deleting PBS/Maui Jobs