{section: How to configure HTCondor on a worker node to run one job and then exit} This recipe configures the master and startd on an execute node to exit after the startd runs precisely one job to completion. This behavior is often desirable in a glide-in situation. {code} # # Tell the master to wait a real long time before restarting the startd, # since when the startd exits we don't want to restart it, we want to go # away. # MASTER_BACKOFF_CONSTANT = 999999 # # Set CLAIM_WORKLIFE to one second. This tells the startd to go back # to Unclaimed/Idle state after any job that runs for more than one # second completes. # CLAIM_WORKLIFE = 1 # # Modify Start expression so we will not accept a second job after # the first one completes and the startd goes back to Idle. # START = (TotalTimeClaimedBusy =?= UNDEFINED || \\ TotalTimeClaimedBusy =?= 0 ) \\ && ( $(START) ) # # Shutdown startd if we are currently idle and have ever been busy # in the past. # STARTD.DAEMON_SHUTDOWN = (Activity=="Idle") && \ ((TotalTimeClaimedBusy =!= UNDEFINED) && (TotalTimeClaimedBusy > 0)) # # Shutdown the master if the startd exits. Note that if # STARTD_StartTime is zero, that the startd is not currently running. # MASTER.DAEMON_SHUTDOWN = (STARTD_StartTime =?= 0) {endcode}