https://community.intel.com/t5/Intel-MPI-Library/I-MPI-PIN-MAPPING/m-p/1708073#M12192 <P>I see Intel MPI sets the following environment variables.</P><P>I_MPI_PIN_INFO x0,1,2,3,7,8,9,13,14<BR />I_MPI_PIN_MAPPING 5:0 0,1 15,2 4,3 10,4 28</P><P>&nbsp;</P><P>I think&nbsp;I_MPI_PIN_INFO is the cores that MPI process is pinned on. But how do I interpret&nbsp;I_MPI_PIN_MAPPING? How does these affect MKL? Thanks.</P> Thu, 07 Aug 2025 20:31:18 GMT toddwz 2025-08-07T20:31:18Z https://community.intel.com/t5/Intel-MPI-Library/I-MPI-PIN-MAPPING/m-p/1708073#M12192 <P>I see Intel MPI sets the following environment variables.</P><P>I_MPI_PIN_INFO x0,1,2,3,7,8,9,13,14<BR />I_MPI_PIN_MAPPING 5:0 0,1 15,2 4,3 10,4 28</P><P>&nbsp;</P><P>I think&nbsp;I_MPI_PIN_INFO is the cores that MPI process is pinned on. But how do I interpret&nbsp;I_MPI_PIN_MAPPING? How does these affect MKL? Thanks.</P> Thu, 07 Aug 2025 20:31:18 GMT https://community.intel.com/t5/Intel-MPI-Library/I-MPI-PIN-MAPPING/m-p/1708073#M12192 toddwz 2025-08-07T20:31:18Z