Re: [Condor-users] Setting the master and startd for one job only

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

Marian ZUREK wrote:
> Hi,
>
> I would like to setup the condor worker node to run precisely one job  
> and exit.
> For this to happen I got the receipt to start the condor_master in  
> the foreground (-f option)
> and also define the DAEMON_SHUTDOWN expressions as specified below
>
> STARTD.DAEMON_SHUTDOWN = (Claimed && Idle && TotalTimeClaimedBusy > 0)
> MASTER.DAEMON_SHUTDOWN = startd_exit_code == 99
>
> I have tested the above setup using Condor v6.9.4 however I did not  
> manage to make it operational the desired way.
> I am wondering whether any of you had a chance to exercise such a  
> scenario and is willing to share his/her experience.

So you want the startd and master to exit after the startd runs just one 
job to completion?

Hmmm.... well, I haven't tested this, but off the top of my head this is 
what I'd try appending to the end of condor_config:

#
# 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)

> Thank you in advance for your replies,
> Marian ZUREK

Hope this helps Marian.  If it does, you can buy me a beer next time you 
are in Madison.  :).

--
Todd Tannenbaum                       University of Wisconsin-Madison
Condor Project Research               Department of Computer Sciences