High Performance Computing Group

High Performance Computing Group

Connect with HPC subject matter experts and discuss how hybrid cloud HPC Solutions from IBM meet today's business needs.

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  • 1.  Is LSF queue allowed to preempt itself?

    Posted Wed December 26, 2018 10:14 PM
    Hi, dear LSF experts,

    I have an LSF queue, say it's queue A. I only want higher priority jobs in queue A to preempt lower priority jobs in queue A, but not jobs in any other queues. If I set queue A to be preemptable, could I set it to be preemptable only by itself (queue A)? Or if this is not allowed, what could achieve my goal?

    Many thanks,
    Willy.

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    Willy Pinkman
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    #SpectrumComputingGroup


  • 2.  RE: Is LSF queue allowed to preempt itself?

    Posted Thu January 03, 2019 02:48 PM
    Willy,

    This is not possible, you should bswitch or bmod the job to a PREEMPTIVE queue.  However, if you simply want to raise the priority of the job so that it's the next job to be scheduled, you can use btop, or you can change the user or groups fairshare allocation dynamically either through a modification of the various user configuration files, or through the bconf command.  Users with a higher fairshare dynamic priority will have their jobs scheduled ahead of others.  You can view that command using the 'bqueues -l queuename' command if fairshare is configured.

    Larry

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    Larry Adams
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