Documenting an undocumented chip: the TensorCore of TPU v5e
Comments
Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Summary
An unofficial, experimentally derived reference for the TensorCore of Google's TPU v5e, documenting its instruction set and per-instruction cycle counts. The author built a custom minimal driver and ran micro-kernel probes on a physical chip, with LLM agents assisting in exploring the design.