Re: [Condor-users] quick question: is periodic vacate possible

[Matthew Farrellee <matt@xxxxxxxxxx>]

Sounds like a reasonable feature request to allow periodic signal delivery to Vanilla Universe jobs. We recently extended kill_sig to VU for checkpointing on exit.

Best,


matt

On 06/17/2010 11:42 AM, Dan Bradley wrote:
> Ian,
> 
> The machine's PREEMPT expression could be used to periodically
> checkpoint vanilla universe jobs that implement some kind of
> self-checkpointing.  You would just want to make sure that WANT_VACATE
> is true for the jobs that get preempted or they will be booted off
> without any chance to save state.
> 
> --Dan
> 
> Smith, Ian wrote:
>> Dear All,
>>
>> Just a very quick question that I can't seem to find an answer for
>> anywhere:
>>
>> Is it possible to periodically vacate jobs in the same way as
>> they can be periodically held and removed ?
>>
>> The reason I ask is that I've been building checkpointing
>> into some of our vanilla universe jobs and it would
>> be useful if these could be vacated say once every
>> few hours so that the checkpoint file get stored in
>> the $(SPOOL). Some of the jobs can run for days
>> and with few students around the campus at present
>> they are unlikely to get evicted by user logins. This
>> means that the output can get lost if the startd crashes for some
>> reason*, loosing several days
>> work.
>>
>> regards,
>>
>> -ian.
>>
>> * I've noticed several connection failures with long running jobs  
>> and I'm still not sure of the reason although someone turning
>>   off an execute host running a job is obviously one !
>>
>> --------------------------------------------
>> Dr Ian C. Smith,
>> Advanced Research Computing (e-Science) Team,
>> The University of Liverpool
>> Computing Services Department
>>
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