Lightning-AI / Lightning-AI/pytorch-lightning

Support uneven DDP inputs with pytorch model.join

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3rd party distributed feature help wanted
Dominant language
Python
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Description

See more details: https://github.com/pytorch/pytorch/issues/38174

cc @borda @tchaton @rohitgr7 @akihironitta @awaelchli

Contributor guide

Open the contributing guide

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 reading the linked PyTorch issue (#38174) and the discussion in this issue about uneven DDP inputs and pytorch model.join. Identify the relevant entry points and tests from that discussion before defining the scope. Done means pytorch model.join supports the uneven-input case described there.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, pytorch
Domain
distributed-systems, machine-learning
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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