Overview

On May 7, 2024 Apple announced the M4 chip at its “Let Loose” event. M4 is the first publicly available silicon supporting Arm’s Scalable Matrix Extension (SME). SME has been eagerly awaited by the HPC community for quite some time now, and this page is dedicated to providing information about M4’s SME support. One last thing: Hello SME!

Information

We are making the corresponding code available on GitHub. The goal of this effort is to move quickly. This means that there will probably be bugs. If you find any, please let us know. You can reach us via Matrix or submit an issue.

Here is a small collection of links related to M4 and SME:

• Apple:

  • Apple events

  • M4 Press Release

  • iPad Pro Press Release

  • LLVM M4 support

• ARM:

  • SME Blog Post

  • SME Programmer’s Guide

  • SME Instructions

  • Arm Architecture Reference Manual for A-profile architecture