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Editorial Team
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Asked: 2026-05-26T03:38:58+00:00

Is there a way to make an OMP thread or task run on a

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Is there a way to make an OMP thread or task run on a certain core?
I found this, followed the link, but I couldn’t find the source code to test it. Also this is an Intel solution to it (I think). Does OMP support this itself?

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  1. Editorial Team

    As far as I know as of OpemMP 3.0 they’re all vendor specific extensions.

    For example GOMP (GCC’s implementation) honours the environment variable GOMP_CPU_AFFINITY for setting thread affinity.

    In their documentation they give the example:

    GOMP_CPU_AFFINITY="0 3 1-2 4-15:2"

    Which they state:

    will bind the initial thread to CPU 0, the second to CPU 3, the third
    to CPU 1, the fourth to CPU 2, the fifth to CPU 4, the sixth through
    tenth to CPUs 6, 8, 10, 12, and 14 respectively and then start
    assigning back from the beginning of the list. GOMP_CPU_AFFINITY=0
    binds all threads to CPU 0

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