Forcing macos high power mode on GPU?

[jafioti]

Hi, I'm writing matmul kernels right now, and I have an issue where I will run my kernel 100 times and each time get drastically different performance. I suspect this is caused by macos shifting the gpu to low power mode / limiting it's clock speed.

There's also the issue where when I switch windows during execution, my kernels start returning 0's and taking 0 time to run.

Has anyone dealt with this, or is there a ggml issue I can look at where similar problems have been addressed?