Can we control CPU core usage in MLPerf on NVIDIA Orin?

[aabhinavg1]

Can we control CPU core usage in MLPerf on NVIDIA Orin?

We are running MLPerf on an NVIDIA Orin platform with the following CPU configuration:

• 12 CPU cores
• 1 thread per core
• 3 clusters

Scenario

We tried running MLPerf with different core affinities using taskset. The goal is to limit the benchmark to specific cores and observe the expected core utilization.

Here are our observations:

Command	Scenario	Observation
taskset -c 0-11	12C 12T	All 12 cores active
taskset -c 0-3	4C 12T	All 12 cores still active
taskset -c 0	1C 12T	All 12 cores active (core switching observed)

We expected only the specified cores (e.g., 0-3) to be active during execution, but all cores are being used regardless of the taskset configuration.

Question

Is it possible to control or limit the CPU cores used by MLPerf (e.g., via taskset or other methods) on the NVIDIA Orin platform?

If yes, how can we configure MLPerf to respect the core affinity settings?

Thanks in advance!