No performance difference between ARMv7 (32-bit) Android and ARM64 (64-bit) Android

pytorch / QNNPACK

Quantized Neural Network PACKage - mobile-optimized implementation of quantized neural network operators

https://code.fb.com/ml-applications/qnnpack/

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No performance difference between ARMv7 (32-bit) Android and ARM64 (64-bit) Android #47

Closed yangwenca closed 5 years ago

yangwenca commented 5 years ago

I follow the tutorial to run speed benchmark (MobileNet v2) on ARMv7 (32-bit) and ARM64 (64-bit) Android. There is no performance difference between them.

Data from a few Android devices

device	per iter (ms)	iters per second
oneplus_5_32	17.27	57.92
oneplus_5_64	15.3	65.36
htc_10_32	35.56	28.12
htc_10_64	37.63	26.57
huawei_caml21_32	52.34	19.14
huawei_caml21_64	49.89	20.05

Maratyszcza commented 5 years ago

This is expected. On well-optimized code there is only a small difference between 32-bit and 64-bit ARM