Whether it has the third lib that can improve the performance when PyTorch on ARMv8?

I have PyTorch on RAMV8, when I test some models such as resnet50 etc, I find the performance just not as good as I except, of course I have installed BLAS lib on ARM, I want to ask whether it has the third lib such as NNPACK that can improve the performance.

what is RAM? is it an OS?

@smth sorry, I have a miss spelling of RAM, it is the ARM.