Re: [Condor-users] Jobs being preempted with default rank settings

[Steven Timm <timm@xxxxxxxx>]

What's the value of PREEMPTION_REQUIREMENTS?
That can do it--if one user has got too high of a priority the other one
can come in and knock it out, unless you set PREEMPTION_REQUIREMENTS to 
false.

Steve

On Thu, 17 Jul 2008, David Dynerman wrote:

> Hey there,
>
> I was wondering if anyone's encountered problems with jobs of equal rank
> preempting eachother.
>
> Our condor pool is running mostly the default configuration files. We
> don't have RANK set on our execute nodes (it's commented out by default)
>
> The behavior I'm noticing is that once we have enough jobs to match
> multiple jobs to one node, existing running jobs are being preempted by
> new jobs. The odd thing is that we haven't set any preferences - these
> jobs are both from internal lab users, and we have all the default
> settinings.
>
> This is in the StartLog of the execute node that evicted a job:
>
> 7/17 14:33:27 slot2: match_info called
> 7/17 14:33:29 slot2: Preempting claim has correct ClaimId.
> 7/17 14:33:29 slot2: New claim has sufficient rank, preempting current
> claim.
> 7/17 14:33:29 slot2: State change: preempting claim based on user priority
> 7/17 14:33:29 slot2: State change: claim retirement ended/expired
> 7/17 14:33:29 slot2: Changing state and activity: Claimed/Busy ->
> Preempting/Vacating
>
> Does anyone know what might be going on? Do long-running jobs by default
> become "evictable" after a certain timeframe?
>
> We're running in vanilla, so evictions really suck since everything has
> to start over...
>
> David
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--
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Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.