NVIDIA / NVIDIA/apex

while i choose O2 to train model, bug: Expected tensor for argument #1 'input' to have the same device as tensor for argument #2 'weight'; but device 1 does not equal 0 (while checking arguments for cudnn_convolution)

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#826 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Python
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Description

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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

No file, test, or entry point is identified in the issue. Start by reproducing model training with O2 enabled and the reported CUDA device mismatch, then trace the device placement involved in the cudnn_convolution error. Done means training completes with O2 without input and weight tensors being placed on different devices.

Written by the indexing model from the issue text.

Assessment

Tech stack
python, pytorch
Domain
machine-learning
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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