pytorch/examples

Example code (mnist) does not work under torch.utils.bottleneck

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#391 opened on Jul 25, 2018

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good first issue

Description

Example code (mnist) does not work under torch.utils.bottleneck. This is solved by changing the value num_workers from 1 to 0. It needs to check other examples also.

Reference https://github.com/pytorch/pytorch/issues/6313 https://discuss.pytorch.org/t/cannot-measure-cuda-usage-on-mnist-example/21600/2

Contributor guide

Tech stack
python
Domain
machine learning
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
PythonPyTorch basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
The issue is that the MNIST example fails under torch.utils.bottleneck when num workers=1. The fix is to change num workers to 0 in the data loader. The issue also suggests checking other examples for similar issues. No linked PR or assignee, so the fix is straightforward but requires verifying other examples in the repository (e.g., in the examples directory) for the same pattern.