Global fair share scheduling

The global fair share scheduling policy divides the processing power of the IBM® Spectrum LSF multicluster capability and the LSF/XL feature of IBM Spectrum LSF Advanced Edition among users to provide fair access to all resources, so that every user can use the resources of multiple clusters according to their configured shares.

Global fair share is supported in LSF Standard Edition and LSF Advanced Edition.

Global fair share supports the following features:

Queue level user-based fair share.
Cross queue user-based fair share. You configure the parent queue as a participant of global fair share. Participants can be any queues, users or user groups participating in the global fair share policy. There is no need to configure a child queue as a participant since it does not synchronize data for the global fair share policy.
Parallel fair share: LSF can consider the number of CPUs when using global fair share scheduling with parallel jobs.

Global fair share supports 4096 user groups in a fair share tree.

Global fair share scheduling is based on queue-level user-based fair share scheduling. LSF clusters running in geographically separate sites connected by LSF multicluster capability can maximize resource utilization and throughput.