pymc-devs / pymc-devs/pytensor

Consider making grad a dummy Op

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enhancement graph rewriting Op implementation request discussion
Dominant language
Python
Stars
644
Forks
208
Avg merge
2d 14h
Merged PRs (30d)
16

Description

Description

That gets unrolled at some stage of the compilation pipeline.

This allows us and users to easily rewrite gradient graphs before they get "messy". This covers a lot of the discussion in #182

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing grad through the compilation pipeline and identify where gradient graphs are currently unrolled. The work is done when grad can remain a dummy Op long enough for PyTensor and users to rewrite gradient graphs before unrolling.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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