Re: [Condor-users] concurrency limits

[Matthew Farrellee <matt@xxxxxxxxxx>]

On 06/21/2011 09:39 AM, Rich Pieri wrote:
> On Jun 21, 2011, at 9:10 AM, Matthew Farrellee wrote:
> > You can have each user put a limit in their submit file, or you should
> > be able to use this config...
>
>
> It isn't that simple.  Again with the hypotheticals, let's say that
> you have a Condor pool and a software package with 50 floating
> licenses -- that is, the pool can have up to 50 instances of that
> package running concurrently.  Alice wants to start a large,
> long-running (days or weeks) job and she is authorized to use all 50
> licenses.  She submits her job with a concurrency limit of 45
> licenses (she is a considerate user) and her processes start
> running.
>
> You come along a day or two later and want to reduce Alice's
> concurrency limit to 30 licenses.  How do you propose to have Condor
> make 15 of Alice's actively running processes release their
> licenses?

For the question as posed it was.

Reduction in # of licenses configured does not result in eviction of 
jobs. If you want to do that you'll have to condor_hold/rm some of the 
jobs using licenses, which shouldn't be a problem with a considerate 
user like Alice. 8o)

Best,


matt