Housekeeping

[klamike]

This is ready, except I need to check the slurm pipeline works on phoenix.

• MathOptSymbolicAD -> MOI.Nonlinear.SymbolicMode
• CI for latest and for LTS
• Use julia-actions/cache@v2
• Default to 8 cores for sysimage
• switch time_limit kwarg default to Inf in exp/sampler.jl, check if existing time limit matches for less verbose warnings when not using time limits

Breaking changes:

• slurm/submit_jobs.jl -> slurm/create_jobs.jl (since it doesn't actually submit anymore)
• close On HSL_jll and OTHER_ERROR #200 . we now warn and skip if HSL_jll is a dummy
• Use user's julia instead of lmod's. To use the old workflow, add julia to the module load list in slurm/template/env.sh

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
src/opf/ed.jl	95.38% <100.00%> (+0.03%)	⬆️
src/opf/opf.jl	100.00% <100.00%> (ø)

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[klamike]

@mtanneau what do you think of this split project approach?

[mtanneau]

Good with all of these:

• MathOptSymbolicAD -> MOI.Nonlinear.SymbolicMode
• CI for latest and for LTS
• Use julia-actions/cache@v2
• Default to 8 cores for sysimage
• slurm/submit_jobs.jl -> slurm/create_jobs.jl (since it doesn't actually submit anymore)

But TBH I have mixed feelings about this one:

• Separate projects for root, exp, and slurm

🙂 I am supportive of reducing / cleaning up our dependencies, and the fact that our codebase is effectively scatter across src, exp and slurm.
🙁 However, it does scare me a little to have 3 different environments that can possibly (likely) fall out of sync with one another.

I would rather we consolidate all these pieces into src and leverage the app functionalities introduced in Julia 1.12... which I believe would also reduce our CI burden quite a bit. That is a non-trivial amount of work, and I would be 100% open to splitting it into a separate PR (or PRs)

[mtanneau]

CI is failing, looks like it's because of an issue with Clarabel.

[klamike]

I'll rebase and revert to a single Project.toml. The main motivation is to avoid pulling different versions of dependencies across src, exp, slurm.

[Copilot]

Pull request overview

This pull request reorganizes the project's dependency structure by introducing separate Julia project environments for different use cases (root, exp, and slurm), modernizes the automatic differentiation backend by replacing MathOptSymbolicAD with MOI.Nonlinear.SymbolicMode, and improves CI configuration.

Key Changes:

• Separated dependencies into three project environments: root for core PGLearn functionality, exp/ for experimentation/sampling scripts, and slurm/ for cluster job management
• Replaced deprecated MathOptSymbolicAD with MOI.Nonlinear.SymbolicMode via a new maybe_set_ad() helper function
• Updated CI to test on both latest Julia and LTS versions, and modernized caching with julia-actions/cache@v2

Reviewed changes

Copilot reviewed 15 out of 16 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Project.toml	Removed solver-specific and utility dependencies now moved to exp/ and slurm/ projects
exp/Project.toml	New project file for experimentation environment with solvers and sampling dependencies
slurm/Project.toml	New project file for SLURM job management with templating and I/O dependencies
src/opf/opf.jl	Removed MathOptSymbolicAD import, added maybe_set_ad() helper using MOI.Nonlinear.SymbolicMode
src/opf/ed.jl	Updated to use new AD backend via maybe_set_ad()
exp/sampler.jl	Removed obsolete MathOptSymbolicAD import
exp/config.toml	Updated example configuration with placeholder values for SLURM settings
slurm/create_jobs.jl	Renamed from submit_jobs.jl, added error handling for incorrect project usage
slurm/make_sysimage.jl	Updated package list and project paths to use exp/ environment
slurm/template/*.sbatch	Updated all SLURM templates to use correct project paths (exp/ or slurm/)
slurm/README.md	Updated documentation for file rename and new project structure with setup instructions
README.md	Added setup instructions for new project structure
test/sampler.jl	Added environment setup logic with version-specific handling for Julia ≤1.10
.github/workflows/ci.yml	Added LTS testing, replaced custom caching with julia-actions/cache@v2

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[klamike]

@copilot add a commit to go back to a single Project.toml file

[Copilot]

@klamike I've opened a new pull request, #214, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@klamike I've opened a new pull request, #216, to work on those changes. Once the pull request is ready, I'll request review from you.