Charlie Burnes (charlie.burnes.delete@this.no-spam.com) on May 19, 2022 3:11 am wrote:
> At Intel’s Investor Day in February 2022, Intel said the Xeon line in 2024 will be split into a
> series of products with only performance cores (P cores) and a different series of products with
> only energy efficient cores (E cores). The E cores are derived from the Atom line and take about
> 1/4 the area of the P cores. The first Xeon with E cores is called Sierra Forest. It seems safe to
> assume that Sierra Forest Xeons will not have AVX-512 and Intel’s 1024-bit Advanced Matrix Extensions
> (AMX). Intel described Sierra Forest as “Power/perf optimized to support high-density, ultra-efficient
> compute for the cloud”. A front-end web server doesn’t need AVX-512 and AMX.

It's unlikely Sierra Forrest with use Gracemont. Leaks/details on Crestmont/Skymont are pretty thin at the moment, so who knows what they'll have.
I forgot about the E-core only Xeon, and I wouldn't be surprised if they did or didn't adopt AVX-512. But it's likely the P-core future Xeons will keep AVX-512.

Front end web-servers probably don't need high performance SIMD, but the ISA itself could have some uses (I, for one, have a front end webserver doing on-demand image manipulation). Note that Gracemont implements AVX2 on 128-bit FPUs.