[tome]

It's a completely custom ASIC. Haskell was used in the hardware design, in a Bluespec-like way. Some parts of the compiler tool chain and infrastructure are also written in Haskell. We have loads of C++ and Python too, as you would imagine.

[sandGorgon]

very cool. thanks for sharing. i would not have guessed haskell for the compiler tool chain. Why did you choose that ? i mean haskell has a LONG history in chip design...but compilers are usually the forte of llvm/c++, etc. im guessing it must have been non trivial to do this.

[tome]

Our founder/CEO Jonathan Ross is a big fan of Haskell and used Haskell to design the first version of the TPU whilst he was working for Google. When he founded Groq he and the early team designed some parts of our chip using Haskell too, particular the matrix multiplication engine, IIRC. Most of our compiler toolchain is MLIR/LLVM/C++ as you suggest, but a decent fraction of it is Haskell and another decent fraction is Python. Haskell is actually a really good language for writing compilers!