QuantEcon / QuantEcon/lecture-python.myst

[performance] GitHub Actions appears to be running much more slowly than local testing

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bug
Dominant language
TeX
Stars
123
Forks
57
Avg merge
3d 10h
Merged PRs (30d)
11

Description

This was observed on a recent PR https://github.com/QuantEcon/lecture-python.myst/pull/567

  1. The timing is slower on JAX version (GitHub actions build - gpu) than the numba version. (LHS = this PR, RHS = Live site)~~ (Status: Local testing shows jax should run approximately 2 x faster than numba version, so this timing is an issue with GA environment).
Screenshot 2025-08-21 at 4 53 16 pm

We should investigate performance comparing GitHub Actions to Local and understand why.

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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

Use PR #567 as the baseline and compare the JAX and numba timings from local testing with the GitHub Actions gpu environment. Start by examining the workflow configuration and the commands used for the affected build. Done means the cause of the GitHub Actions slowdown is identified and the comparison is documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
github-actions, python
Domain
ci-cd, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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