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Dougall Johnson

Reverse engineer of Apple AMX and the M1 GPU instruction set

EngineeringmacOS
The work

What we are celebrating, specifically.

  • applegpu docs and tools
  • Apple AMX reverse engineering
  • M1 microarchitecture timing research

Reverse engineer of Apple AMX and the M1 GPU instruction set

Public work celebrated here · current

Why

Why we celebrate them.

Dougall documented Apple's secret AMX matrix coprocessor and the G13 GPU instruction set, publishing disassemblers, emulators, and notes that ML optimizers and the Asahi project alike build on. When code runs fast on an M-series chip, his fingerprints are often nearby.

Sources — their own pages, so you can check us

  • applegpu
  • AMX notes
This page is yours

Dougall Johnson, this belongs to you.

We built this from your public work because we think it deserves celebrating. You did not ask us to, so the only fair thing is that you decide what happens to it. Claim it and it is yours to edit. Ask us to change something and we will. Ask us to take it down and it is gone within 72 hours — free, no account needed, and nobody will try to talk you out of it.

Claim or remove this pageEveryone we celebrate