Post Ad826lg6Go92wDUbmi by Methylzero@mast.hpc.social
 (DIR) More posts by Methylzero@mast.hpc.social
 (DIR) Post #Ad4JYjkzvXhlg1rlr6 by ignaloidas@not.acu.lt
       2023-12-22T13:12:43.841Z
       
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       @niconiconi@mk.absturztau.be I wonder how much the epyc NUMA modes do this (I think you could go to 4 nodes per CPU on Rome)
       
 (DIR) Post #Ad826lg6Go92wDUbmi by Methylzero@mast.hpc.social
       2023-12-24T08:15:33Z
       
       1 likes, 0 repeats
       
       @ignaloidas @niconiconi Yes the IOD can be split into its 4 quadrants, which will be reported as 4 NUMA nodes. But IIRC usually this is less severe of a shift than the Haswell/Broadwell Xeons' CoD modes. There is also the L3-as-NUMA toggle, which will report each L3 block (4 cores on Rome, 8 on Milan) as a separate NUMA node to the OS.