https://www.amd.com/content/dam/amd/en/documents/instinct-tech-docs/instruction-set-architectures/amd-instinct-mi300-cdna3-instruction-set-architecture.pdf http

https://www.amd.com/content/dam/amd/en/documents/instinct-tech-docs/instruction-set-architectures/amd-instinct-mi300-cdna3-instruction-set-architecture.pdf https://www.amd.com/content/dam/amd/en/documents/instinct-te... The compiler is LLVM https://github.com/llvm/llvm-project/tree/main/llvm/lib/Target/AMDGPU https://github.com/llvm/llvm-project/tree/main/llvm/lib/Targ... It's all there. For the driver/runtime everything is also open and upstreamed into the Linux kernel (register map and pcie bar and etc). The packet protocol isn't well-documented but documented enough that tinygrad managed to build their own driver from scratch.