The log output indicate of cpu&npu percentage looks strange

[heweiwill]

Hi ,
I run this command: examples/arm/run.sh --model_name=mv2 --target=ethos-u55-128
And it runs successfully, but the log output indicate CPU ratio looks strange, suppose the mv2 model could 100% running on npu.
Any idea on this?

I [executorch:arm_perf_monitor.cpp:133 StopMeasurements()] NPU Inferences : 1
I [executorch:arm_perf_monitor.cpp:134 StopMeasurements()] Profiler report, CPU cycles per operator:
I [executorch:arm_perf_monitor.cpp:138 StopMeasurements()] ethos-u : cycle_cnt : 1859660 cycles
I [executorch:arm_perf_monitor.cpp:145 StopMeasurements()] Operator(s) total: 1859660 CPU cycles
I [executorch:arm_perf_monitor.cpp:151 StopMeasurements()] Inference runtime: 2219663 CPU cycles total
I [executorch:arm_perf_monitor.cpp:153 StopMeasurements()] NOTE: CPU cycle values and ratio calculations require FPGA and identical CPU/NPU frequency
I [executorch:arm_perf_monitor.cpp:162 StopMeasurements()] Inference CPU ratio: 99.98 %
I [executorch:arm_perf_monitor.cpp:166 StopMeasurements()] Inference NPU ratio: 0.02 %
I [executorch:arm_perf_monitor.cpp:175 StopMeasurements()] cpu_wait_for_npu_cntr : 336 CPU cycles
I [executorch:arm_perf_monitor.cpp:180 StopMeasurements()] Ethos-U PMU report:
I [executorch:arm_perf_monitor.cpp:181 StopMeasurements()] ethosu_pmu_cycle_cntr : 1085680
I [executorch:arm_perf_monitor.cpp:184 StopMeasurements()] ethosu_pmu_cntr0 : 499818
I [executorch:arm_perf_monitor.cpp:184 StopMeasurements()] ethosu_pmu_cntr1 : 378668
I [executorch:arm_perf_monitor.cpp:184 StopMeasurements()] ethosu_pmu_cntr2 : 299694
I [executorch:arm_perf_monitor.cpp:184 StopMeasurements()] ethosu_pmu_cntr3 : 47887
I [executorch:arm_perf_monitor.cpp:184 StopMeasurements()] ethosu_pmu_cntr4 : 388