[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Condor-users] Setting concurrency limits for already running jobs

On 06/20/2011 11:44 AM, Horvátth Szabolcs wrote:

You cannot change the concurrency limits of running jobs. You would
have to hold + change + release.
That is a serious limitation of the system. Would be great if it was

You can set limits at the same time you submit, so your second
sentence is a bit odd.
My second sentence was about modifying the job class-ad after
submission, using condor_qedit.
Sometimes the limit has to be set after hours or days of job execution
(for jobs that can't preempt/continue)
so holding and releasing a job is not a viable option.



It is a limitation, but typically it is difficult to determine when an executing program phase shifts and no longer requires a resource. You can make the shifts explicit with a DAG.

Possibly the recently mentioned condor_suspend/resume would be useful in your case.

FYI, it is architecturally possible to get jobs to release limits, via chirp or qedit, the ability just isn't implemented. A strong use case would be helpful.