Fused_adam index out of range error

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
48/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
python, pytorch
Domain
machine-learning

Research direction

Start by reading apex/optimizers/fused_adam.py at line 121 and reproduce the failure with an empty params list. Confirm the empty-list case no longer raises an index error while normal optimizer behavior remains unchanged, using the repository's existing test entry point if available.

Written by the indexing model from the issue text.

Description

bug

This line throws index out of range error when params is empty.
https://github.com/NVIDIA/apex/blob/d8643eff7f493d28e0fb26254829dbce211a2e25/apex/optimizers/fused_adam.py#L121

An easy fix would be to check if the list is empty or if it's self.capturable

Dominant language
Python
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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