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Status Planned for future release
Workspace Spectrum LSF
Components Scheduling
Created by Guest
Created on Jun 10, 2025

RELATED IDEAS

Consider AMD ccd in affinity string

Hello,

Currently, using affinity string, we can target a core, a numa, a socket or memory, but not an AMD CCD (Core Complex Dies, L3 cache shared by 8 or 16 cores)

Allowing jobs requesting less cores than available in a CCD (8 or 16 currently) to constrain to a CCD can improve drastically performance (all job processes/threads will use the shared L3 cache) .

Can you please add a new keyword in affinity string, similar to numa, core, socket,  to cover this request ?

ex using 'die' keyword to target CCD: bsub ... -n 8 -R "... affinity[core(1,same=die,exclusive=(socket, alljobs))]" <cmd>

 Regards,

        Olivier

Needed By Not sure -- Just thought it was cool
  • Admin
    Bill McMillan
    Jun 28, 2025

    Hi Olivier,
    We have a project tentatively planned for 4Q, but may slip to 1Q26, so enhance the affinity options. We'll consider this requirement as part of that project.


    Regards,

    Bill


    Reply

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