[torqueusers] Torque behavior with failed nodes

Garrick Staples garrick at usc.edu
Fri Jul 29 16:01:18 MDT 2005


I just tested this with torque p5 and something got broken.  MS is
actively killing jobs when a sister mom is down.

On Fri, Jul 29, 2005 at 09:38:34AM -0600, Dave Jackson alleged:
> Pradeep,
> 
>   The responsibility for handling job migration on node failure
> detection belongs with the scheduler.  If using Moab, the parameter
> 'JOBACTIONONNODEFAILURE' can be set to a value such as requeue or cancel
> to inform the scheduler to requeue and restart the job, or just
> terminate it to free up the non-failed nodes which were allocated.
> 
>   Maui provides a warning about this issue but does not automatically
> take action (use 'mdiag -j').  pbs_sched doesn't seem to do anything.  
> 
>   Let us know if there is further information we can provide.
> 
> Dave
> 
> On Thu, 2005-07-28 at 22:51 -0400, Pradeep Padala wrote:
> > Hi,
> >     I am trying to understand Torque's behavior when a node fails. I am 
> > checking the source, and I understand that check_nodes marks the node as 
> > down by setting the node state to INUSE_DOWN, but I don't see any code 
> > to move the jobs to somewhere else. What happens to the jobs running on 
> > that node? Will the scheduler be told about the failed node?
> > 
> >     Any input is greatly appreciated.
> > 
> > Thanks,
> 
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-- 
Garrick Staples, Linux/HPCC Administrator
University of Southern California
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