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Status Not under consideration
Workspace Spectrum LSF
Created by Guest
Created on Jun 22, 2015

RELATED IDEAS

LSF to preempt tasks in a running parallel job that use borrowed resources to allow PEND jobs with guarantees to go running

We hare 3 queues.
All queues have same priority.
Each queue has a GRP SLA (guarantee).
All queues are setup such that each queue loans out it guarantees to the other 2 queues when not used.

In customer environment is often the case that 1 queue goes HOT and consumes all the loaned resources from the other 2 queues.
Jobs in this queue can run at 1000's of cores for several days.

In the above scenario - we not that GRP SLA's only work at the scheduling level. This means that once allocated - the loan guarantees cannot be reclaimed until the running jobs using them has completed or have been deleted.

This means that the GRP policy offers us no guarantees in our environment.

We have tried the following:

1 - using different queue priorities and pre-emption. FAILED - users from HOT group just submit to higher priority queue and choke other 2 groups that way.
2 - using limits on job size. FAILED. - users from HOT group just submit 100's of smaller jobs and choke other 2 groups that way.

Only satisfactory solution is implement GRP SLA for running jobs (in addition to scheduled jobs) - forcing either subordination or resize shrink of portions of HOT groups jobs that are using loaned resources from GRP SLA's from other groups.

  • Guest
    Reply
    |     Aug 18, 2020

    This RFE has been open for a considerable time, with all votes from the same organization.
    We have no plans to change the current behavior in the foreseeable future.

  • Guest
    Reply
    |     Jun 23, 2015

    Creating a new RFE based on Community RFE #73114 in product Platform LSF.

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