JuliaDiff / JuliaDiff/AbstractDifferentiation.jl

Feature request: option to turn off ForwardDiff tagging

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feature
Dominant language
Julia
Stars
138
Forks
18
PR merge metrics
No merged PRs in 30d

Description

While developing code that you know isn't part of a higher order differentiation its really useful for compilation speed to turn off ForwardDiff's tagging, but that's not exposed here. Can we make it be? If we can agree on an API, I can implement it. I propose:

ForwardDiffBackend(tag=false) # default is true

Contributor guide

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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 locating the ForwardDiffBackend entry point and reading how its current options are passed to ForwardDiff. Compare that path with ForwardDiff's custom-tags and tag-checking documentation, then define and verify the proposed tag=false behavior while preserving the default tag=true behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
backend-api-design
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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