Re: [Condor-users] quick questions

["Robert E. Parrott" <parrott@xxxxxxxxxxxxxxxx>]

WOW, neat trick!

Thanks,
rob

On Feb 28, 2008, at 11:42 AM, Dan Bradley wrote:

> As if by magic:
>
> http://www.cs.wisc.edu/condor/manual/v7.0/3_3Configuration.html#14088
>
> Apparently, those configuration settings were only ever documented in
> the version history, and by now, the manual no longer contains the
> version history from back when they were added, so they weren't
> documented at all.
>
> I provided some real-life examples that I hope are also helpful.
>
> --Dan
>
> Robert E. Parrott wrote:
>
> > Where can I find more info on "SYSTEM_PERIODIC_HOLD" ?
> >
> > I;m not finding it in the condor manual.
> >
> > thanks,
> > rob
> >
> > On Feb 27, 2008, at 1:48 PM, Dan Bradley wrote:
> >
> >
> >
> > > Robert E. Parrott wrote:
> > >
> > >
> > >
> > > > > > A couple of quick one-offs on configs:
> > > > > >
> > > > > > 1) How does a user specify a max runtime on a job from their  
> > > > > > submit
> > > > > > file?
> > > > > What do you want to achieve: putting the job on hold if it runs  
> > > > > for
> > > > > too
> > > > > long?  Or simply specifying the maximum amount of time the job
> > > > > should be
> > > > > given to finish before being preempted by higher priority jobs?
> > > > Here, I'd like to have users be able to specify the max total run
> > > > time for a parallel job before it's ended.
> > > Is this different from putting the job on hold if it runs too
> > > long?  I'm
> > > not aware of any other option specific to the parallel job universe.
> > >
> > >
> > >
> > > > But I would be very interested in the answers to the other cases  
> > > > you
> > > > pose as well. I assume for the first you want to use a  
> > > > PERIODIC_HOLD
> > > > expression, but the second would be useful as well.
> > > Yes, periodic_hold in the job submit file can be used to put a  
> > > job on
> > > hold if it runs too long.  An alternative would be to have users
> > > insert
> > > a custom attribute that specifies maximum runtime and then you
> > > would use
> > > SYSTEM_PERIODIC_HOLD in the config file to put jobs on hold that run
> > > longer than expected.  Example:
> > >
> > > in submit file:
> > > +MaxRunTime = 3600
> > >
> > > in config file:
> > > SYSTEM_PERIODIC_HOLD = JobStatus == 2 && MaxRunTime =!= UNDEFINED &&
> > > (RemoteWallClockTime - CumulativeSuspensionTime) > MaxRunTime
> > >
> > >
> > > The other thing I alluded to was a way to specify the amount of  
> > > time a
> > > job should be allowed to run without interruption.  This doesn't
> > > really
> > > apply to the parallel universe, because parallel universe jobs  
> > > should
> > > always run without preemption.
> > >
> > > in submit file:
> > > # this should finish in less than one hour
> > > # if it does not, it is ok for it to be preempted
> > > MaxJobRetirementTime = 3600
> > >
> > > in execute machine config file:
> > > # allow up to 2 days max of uninterrupted time for jobs
> > > MaxJobRetirementTime = 3600*24*2
> > >
> > > I hope that helps you.
> > >
> > > --Dan
> > >
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> >
> > ==========================
> > Robert E. Parrott, Ph.D. (Phys. '06)
> > Associate Director, Grid and
> >         Supercomputing Platforms
> > Project Manager, CrimsonGrid Initiative
> > Harvard University Sch. of Eng. and App. Sci.
> > Maxwell-Dworkin  211,
> > 33 Oxford St.
> > Cambridge, MA 02138
> > (617)-495-5045
> >
> >
> >
> >
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==========================
Robert E. Parrott, Ph.D. (Phys. '06)
Associate Director, Grid and
        Supercomputing Platforms
Project Manager, CrimsonGrid Initiative
Harvard University Sch. of Eng. and App. Sci.
Maxwell-Dworkin  211,
33 Oxford St.
Cambridge, MA 02138
(617)-495-5045