Re: [condor-users] pre-emption disabling without machine locking

[Dan Bradley <dan@xxxxxxxxxxxx>]

Dan Bradley wrote:

> Matt Hope wrote:
>
> > Is there anyway to force a machine to become unclaimed when jobs 
> > finish? would this significantly affect throughput when the farm has 
> > only one user with many jobs?
>
> There is no way to do this, but the feature you want will be in 6.7.x 
> (probably 6.7.1).  Your solution which allows preemption during the 
> early stages of a job is the best workaround that I know about.  
> Unfortunately, you don't want to do that for a certain class of 
> "critical" jobs, so those will be problematic.

I should mention an additional clever but expensive workaround that some 
people came up for preventing critical jobs from being killed while 
still allowing preemption to happen: they set PREEMPTION_REQUIREMENTS to 
allow preemption during the first 10 minutes of execution and they make 
their job sleep for 10 minutes (plus a few for safety) on startup.

--Dan


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