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Sam Estep 8c798e0622 Forbid trailing whitespace (#53406 )

Summary:
Context: https://github.com/pytorch/pytorch/pull/53299#discussion_r587882857

These are the only hand-written parts of this diff:
- the addition to `.github/workflows/lint.yml`
- the file endings changed in these four files (to appease FB-internal land-blocking lints):
  - `GLOSSARY.md`
  - `aten/src/ATen/core/op_registration/README.md`
  - `scripts/README.md`
  - `torch/csrc/jit/codegen/fuser/README.md`

The rest was generated by running this command (on macOS):
```
git grep -I -l ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' | xargs gsed -i 's/ *$//'
```

I looked over the auto-generated changes and didn't see anything that looked problematic.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/53406

Test Plan:
This run (after adding the lint but before removing existing trailing spaces) failed:
- https://github.com/pytorch/pytorch/runs/2043032377

This run (on the tip of this PR) succeeded:
- https://github.com/pytorch/pytorch/runs/2043296348

Reviewed By: walterddr, seemethere

Differential Revision: D26856620

Pulled By: samestep

fbshipit-source-id: 3f0de7f7c2e4b0f1c089eac9b5085a58dd7e0d97

2021-03-05 17:22:55 -08:00

2.4 KiB

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PyTorch Glossary

PyTorch Glossary
Operation and Kernel
JIT Compilation
- JIT
- TorchScript
- Tracing
- Scripting

Operation and Kernel

ATen

Short for "A Tensor Library". The foundational tensor and mathematical operation library on which all else is built.

Operation

A unit of work. For example, the work of matrix multiplication is an operation called aten::matmul.

Native Operation

An operation that comes natively with PyTorch ATen, for example aten::matmul.

Custom Operation

An Operation that is defined by users and is usually a Compound Operation. For example, this tutorial details how to create Custom Operations.

Kernel

Implementation of a PyTorch operation, specifying what should be done when an operation executes.

Compound Operation

A Compound Operation is composed of other operations. Its kernel is usually device-agnostic. Normally it doesn't have its own derivative functions defined. Instead, AutoGrad automatically computes its derivative based on operations it uses.

Composite Operation

Same as Compound Operation.

Non-Leaf Operation

Same as Compound Operation.

Leaf Operation

An operation that's considered a basic operation, as opposed to a Compound Operation. Leaf Operation always has dispatch functions defined, usually has a derivative function defined as well.

Device Kernel

Device-specific kernel of a leaf operation.

Compound Kernel

Opposed to Device Kernels, Compound kernels are usually device-agnostic and belong to Compound Operations.

JIT Compilation

JIT

Just-In-Time Compilation.

TorchScript

An interface to the TorchScript JIT compiler and interpreter.

Tracing

Using torch.jit.trace on a function to get an executable that can be optimized using just-in-time compilation.

Scripting

Using torch.jit.script on a function to inspect source code and compile it as TorchScript code.

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