Re: [Condor-devel] help with preemption

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

On 1/13/2012 10:34 AM, Nathan Panike wrote:
> Hi Dan:

Hi Nathan -

You may also want to read the section in the man titled "Disabling 
Preemption" :


http://research.cs.wisc.edu/condor/manual/v7.7/3_5Policy_Configuration.html#27425

It is section 3.5.9.5 - how could you have missed it? ;-)

Todd

> On Fri, Jan 13, 2012 at 09:36:19AM -0600, Dan Bradley wrote:
> > On 1/13/12 9:00 AM, Nathan Panike wrote:
> > > Dear colleagues:
> > >
> > > I have the following configuration:
> > >
> > > CountDeNovoJobs = int(( slot1_IsDeNovoJob =?= True ) +( slot2_IsDeNovoJob =?=
> > > True ) +( slot3_IsDeNovoJob =?= True ) +( slot4_IsDeNovoJob =?= True ))
> > > WantsDeNovoJobs = ( CountDeNovoJobs<= 1 )
> > > STARTD_SLOT_ATTRS = $(STARTD_SLOT_ATTRS) IsDeNovoJob
> > > STARTD_JOB_EXPRS = $(STARTD_JOB_EXPRS) IsDeNovoJob
> > > STARTD_ATTRS = $(STARTD_ATTRS) CountDeNovoJobs WantsDeNovoJobs
> > > KILL = ($(KILL))&&   ( MY.IsDeNovoJob =!= True )
> > > PREEMPT = ($(PREEMPT))&&   ( MY.IsDeNovoJob =!= True )
> > > SUSPEND = ($(SUSPEND))&&   ( MY.IsDeNovoJob =!= True )
> >
> > What is RANK set to?
>
> RANK = (Group =?= "lmcg") * (1000 + Tier)
>
> If I change this to
>
> RANK = (Group =?= "lmcg") * (1000 + Tier) * ( MY.IsDeNovoJob =!= True )
>
> then will it do what I want (wrt machine rank)?
>
> > The preemption happened because the new job had higher machine rank
> > than the existing job.
> >
> > It's a continual source of surprise to users that when PREEMPT is
> > false, jobs can still be preempted.  Our terminology sucks.
> >
> > --Dan
>
> Thanks for the explanation
>
> Nathan Panike
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--
Todd Tannenbaum                       University of Wisconsin-Madison
Center for High Throughput Computing  Department of Computer Sciences
tannenba@xxxxxxxxxxx                  1210 W. Dayton St. Rm #4257
Phone: (608) 263-7132                 Madison, WI 53706-1685