Lightning-AI/pytorch-lightning

Redesign dataloader re-instantiation context managers for Lite

Open

#15 179 ouverte le 18 oct. 2022

Voir sur GitHub
 (10 commentaires) (0 réactions) (1 assigné)Python (3 233 forks)batch import
discussionfabrichelp wantedpriority: 2refactor

Métriques du dépôt

Stars
 (26 687 stars)
Métriques de merge PR
 (Merge moyen 9j 15h) (3 PRs mergées en 30 j)

Description

Proposed refactor

Redesign the context managers that enable re-instantiations of DataLoader after #14992 deprecates the run method design.

Motivation

We currently have two context managers over the run method:

https://github.com/Lightning-AI/lightning/blob/776432fd7e34cc02e9dbfb16ad8ec8491c176dbf/src/lightning_lite/lite.py#L394-L397

  • _replace_dunder_methods(DataLoader, "dataset")
  • _replace_dunder_methods(BatchSampler)

These get applied for the user if they implement the run method. However, this won't be the case anymore after #14992. We need to find an alternative approach.

Pitch

We probably need to call these methods at the start of the program, for example in LightningLite.__init__. But it is unclear how to undo the patching which is usually done in __exit__. Happy to hear suggestions.

cc @borda @justusschock @awaelchli @tchaton @carmocca @otaj

Guide contributeur