Feature Request: Support AVX-512 for Intel Rocket Lake

[aluklon]

Prerequisites

• I am running the latest code. Mention the version if possible as well.
• I carefully followed the README.md.
• I searched using keywords relevant to my issue to make sure that I am creating a new issue that is not already open (or closed).
• I reviewed the Discussions, and have a new and useful enhancement to share.

Feature Description

I have Intel i9-11900 (Rocket Lake) and i5-12600 (Alder Lake) CPUs. Llamafile runs twice as slow on "Rocket Lake" as "Alder Lake". Although "Rocket Lake" supports AVX-512. I suspect this is because "Rocket Lake" uses AVX2 instead of AVX-512. Is it possible to support AVX-512 for "Rocket Lake"?

lscpu-11900.txt
lscpu-12600.txt

llamafile-bench-11900.json
llamafile-bench-12600.json

Motivation

This feature will increase the performance of Llamafile for "Rocket Lake".

Possible Implementation

No response