Lightning-AI / Lightning-AI/lightning-thunder

Tracker for [Fix runtime-trace shape/dtype/device mismatch]

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operators
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Python
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Description

This issue tracks the OpInfo instances with outstanding [Fix runtime-trace shape/dtype/device mismatch] TODOs in [thunder/tests/opinfos.py](thunder/tests/opinfos.py).

Related: #2069

Outstanding OpInfos:
- [x] `copysign` -- prims.where <- #2135
- https://github.com/Lightning-AI/lightning-thunder/blob/8444f90c594c3f29f9d07691cee7f3245a6dd16e/thunder/tests/opinfos.py#L2300-L2312
- [x] `floor_divide` -- prims.where <- #2135
- https://github.com/Lightning-AI/lightning-thunder/blob/8444f90c594c3f29f9d07691cee7f3245a6dd16e/thunder/tests/opinfos.py#L2347-L2388
- [ ] `diagonal` -- clang advanced indexing?
- https://github.com/Lightning-AI/lightning-thunder/blob/8444f90c594c3f29f9d07691cee7f3245a6dd16e/thunder/tests/opinfos.py#L3730-L3741
- [ ] `unfold` -- clang advanced indexing?
- https://github.com/Lightning-AI/lightning-thunder/blob/8444f90c594c3f29f9d07691cee7f3245a6dd16e/thunder/tests/opinfos.py#L3938-L3947
- [ ] `__getitem__` -- clang advanced indexing?
- https://github.com/Lightning-AI/lightning-thunder/blob/8444f90c594c3f29f9d07691cee7f3245a6dd16e/thunder/tests/opinfos.py#L4210-L4237

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 in thunder/tests/opinfos.py at the linked ranges for diagonal, unfold, and __getitem__, then review related issues #2069 and #2135 for context. Compare the remaining OpInfo TODOs against runtime-trace shape, dtype, and device behavior. Done means resolving the three unchecked entries and updating the tracker.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
compilers, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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