[torqueusers] Cluster Node changing to state "down, job-exclusive"

Garrick Staples garrick at usc.edu
Sun Feb 19 23:59:34 MST 2006

On Fri, Feb 17, 2006 at 06:33:05AM -0600, David McGiven alleged:
> Dear Torque Users,
> I have a queue with only one node. I use this node to run a specific kind
> of jobs.
> Whenever I submit a job, it gets into the queue, maui tells the mom to
> start running it and it starts.
> First the node is marked as "free", then is marked as "job-exclusive". I
> ssh to the node and I see the process is running taking 99% CPU.
> This should be the normal behaviour. Then the weird things start.
> I wait a few seconds/minutes and the state changes to "down,
> job-exclusive". I ssh to the node and I see the process is STILL running,
> taking 99% CPU. The node is ok, the pbs_mom is running and I can contact
> to it with momctl from the central server.
> Then I issue a :
> bash# qdel 407
> qdel: Server could not connect to MOM 407.server
> I cannot delete the job. The only solution is doing :
> bash# qmgr
> Max open servers: 4
> Qmgr: set node nodo18 state -= down
> And then :
> bash# qdel 407
> Works
> Does anybody know why torque is behaving like this ? Do you know which
> logfiles or tools should I check ? (Checking
> /var/spool/PBS/mom_logs/logfile didn't help me diagnose the problem).

What about in the server log file?  Do you have any host acls?

Garrick Staples, Linux/HPCC Administrator
University of Southern California
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