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Status Delivered
Workspace Spectrum LSF
Components Scheduling
Created by Guest
Created on Sep 27, 2023

RELATED IDEAS

Group jobs to same cluster when using bsub -cluster feature

Goal:

Group together lsf jobs, "regression", in such a way that bsub -cluster feature directs all jobs in the group to the same cluster.

Proposal:

a) bsub submits all jobs in a job array to a single cluster

bsub -cluster all -J "ArrayName[1-10]" // LSF forwards ArrayName to initially best selected cluster for given resources

This is not sufficient by itself as a regression may contain a mix of arrays and single jobs.


b) bsub supports a cluster affinity tag

bsub -cluster all -clusterAffinityId=<UID> // LSF forwards all jobs with same id to same cluster

The first time LSF sees a new UID, it adds a mapping to a table

Every time a job is bsubbed, LSF increments the job_count associated with the UID

When a job is retired from LSF, LSF decrements the job_count

When job_count reaches zero, the mapping is removed.


Needed By Quarter
  • Admin
    Bill McMillan
    Reply
    |     Nov 23, 2023

    There is no immediate solution to this requirement, although it does align with our longer term direction of modernizing multicluster. Michael Spriggs will continue to investigate this.

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