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

[Ian Chesal <ian.chesal@xxxxxxxxx>]

Some one is doing this now. Checkpointing vanilla jobs with a signal  
from Condor. I think it's Matt Hope. I recall posts to the list about  
this very topic maybe 2 years back. It's possible.

- Ian

Sent from my iPhone

On 2010-06-21, at 8:51 AM, Matthew Farrellee <matt@xxxxxxxxxx> wrote:

> 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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