User Guide

Getting started

• Development guide Getting the code, setting up the dev image or a local environment, running the tests, and opening a PR.

Specs and ops

• Reading and writing the manifest How the system uses a spec, the concepts a spec is described in, and how to write one.
• Adding a new op The six steps from a spec to status: implemented.
• Op base class developer guide What the Op base class does for every op, what a subclass declares to it, and the steps construction and a call go through inside it.

Kernels and hardware

• How an op selects a kernel How an op selects a kernel, how to add a kernel, and how a backend joins.
• Adding a hardware backend Serving the ops on one class of devices with your own kernels.

Integration and performance

• Bringing an op into torch.compile What an op looks like inside a compiled graph, and the conventions a caller follows.
• How a benchmark is timed How the numbers on the Benchmarks pages are measured.
• Writing benchmarks Checking and timing an op against other implementations over its manifest cases.