> Am 22.11.2016 um 09:52 schrieb Goes, Patrick <patrick.g...@arcelormittal.com>: > > Hi, > > To optimize the utilization of our pool of Abaqus licenses, I want to > implement some form of preemptive scheduling, where urgent jobs can force > suspension of less urgent ones. > I have used Marc Olesen’s qlicserver (run as a load sensor) to account for > external uses of licenses, which works fine. > I have created a Abaqus-dedicated queue with suspend, resume and terminate > methods for suspending, etc… > The abaqus jobs that run on execution hosts are suspended all right, and the > licenses are released correctly as far as the FlexLM license server is > concerned, but for SGE they are *not* released, and consequently, no new jobs > that need them are executed. > Since qlicserver compares the license use reported by the FlexLM server with > that of SGE to determine the external (non-SGE) uses, and adjusts (reduces) > the SGE complex accordingly, it seems possible to do something similar for > suspended jobs: they are reported by qstat but not by FlexLM. Their license > use count could be used to increase the SGE complex as long as they are > suspended. > As far as I know, this would require an extension of the qlicserver.
Correct. > Or am I missing existing possibilities? No. > Are any of you aware of similar efforts in that direction ? Or alternative > solutions ? Unfortunately no. Although there are custom suspend and resume procedures which can be defined and even correct any overbooking of licenses, there is no "look-ahead" feature in SGE. Means, that SGE can't see that the available licenses with be increased by X if job Y is going to be suspended. So the job which would lead to suspension of another job is never scheduled. -- Reuti > Thank you, best regards, > > Patrick L. Goes > > http://www.ocas.be/ > _______________________________________________ > users mailing list > users@gridengine.org > https://gridengine.org/mailman/listinfo/users _______________________________________________ users mailing list users@gridengine.org https://gridengine.org/mailman/listinfo/users
