[Q&A] Do you see a way to get the amount of high-performance cores on MacOS?

[Byron]

This is a forwarding issue to the one in the num_cpus crate, and maybe you would have an idea.

I also did a little bit of my own investigation there in case it helps.

Thanks a lot.

[GuillaumeGomez]

"high-performance core" seems very vague... Considering that this crate aims to provide the same API on all targets, it seems to be too much apple (or even macOS) specific to be added here. I'll close the issue but don't hesitate to continue commenting on it if you have more information. I'm curious if that's something other OSes also have.

[Byron]

The other side of ‘high performance cores’ are ‘high efficiency cores’, and time will tell if those will be an architectural trend similar to what we know as ‘logical cores’. Right now, only Apple seems to have them, but I guess if AMD and Intel provide some of their own we can have a look at this once more.

[GuillaumeGomez]

Sounds good to me!

[Byron]

Here is the announced Intel Alder Lake CPU which introduces the concept of 'big' and 'small' cores, where 'small' would be equivalent in purpose to the 'high efficiency' cores Apple uses. I guess I would prefer to stick to the more descriptive term 😅.

Let's see what AMD will do.