[suresk]

My non-expert brain immediately jumped to double-pumping + maybe working with their thread director to have tasks using a lot of AVX512 instructions prefer P cores more. It feels like such an obvious solution to a really dumb problem that I assumed there was something simple I was missing.

The register file size makes sense, I didn't think they were that much of the die on those processors but I guess they had to be pretty aggressive to meet power goals?

[jsheard]

> The register file size makes sense, I didn't think they were that much of the die on those processors

https://i.imgur.com/WdMPX8S.jpeg

According to this, Zen4s FP register file is almost as big as its FP execution units. It's a pretty sizable chunk of silicon.

[suresk]

I was having trouble finding an E Core die shot, but that helps put it into perspective a bit anyway. Thanks!