ITensor / ITensor/BlockSparseArrays.jl
[BUG] Investigate potential compilation issues related to overloading `Base.cat`
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- Julia
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Description
@amilsted reported that as of this PR to NDTensors.BlockSparseArrays: https://github.com/ITensor/ITensors.jl/pull/1579 loading NDTensors.jl/ITensors.jl along with DifferentialEquations.jl causes huge compile times. That might also be related to https://itensor.discourse.group/t/linearmaps-and-itensors-incompatibility/2216.
For NDTensors.jl/ITensors.jl, that issue should get fixed by https://github.com/ITensor/ITensors.jl/pull/1601, since that PR removes BlockSparseArrays.jl from NDTensors.jl in favor of the version in this repository. We need to check if this package has the same problem, and if so rewrite it to avoid that problem.
See also https://github.com/ITensor/SparseArraysBase.jl/issues/25.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by inspecting this package's overloads of Base.cat and reproducing the reported compilation behavior when loading BlockSparseArrays.jl with DifferentialEquations.jl. Compare the relevant changes in ITensors.jl PRs 1579 and 1601 and SparseArraysBase.jl issue 25. Done means confirming whether the problem occurs here and rewriting the package if needed to avoid it.
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Assessment
- Tech stack
- julia
- Domain
- performance
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100