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Issue 68576 prefetch factor#88972

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blankstatic wants to merge 4 commits intopytorch:masterfrom
blankstatic:issue-68576-prefetch_factor
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Issue 68576 prefetch factor#88972
blankstatic wants to merge 4 commits intopytorch:masterfrom
blankstatic:issue-68576-prefetch_factor

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@blankstatic blankstatic commented Nov 13, 2022

Fixes #68576
This PR allows set the prefetch_factor=None making it really optional according to the documentation

@pytorch-bot pytorch-bot bot added the release notes: dataloader release notes category label Nov 13, 2022
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🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/88972

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kit1980 commented Nov 14, 2022

@pytorchbot merge

@pytorch-bot pytorch-bot bot added the ciflow/trunk Trigger trunk jobs on your pull request label Nov 14, 2022
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Merge failed

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@blankstatic blankstatic requested a review from kit1980 November 15, 2022 00:08
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kit1980 commented Nov 16, 2022

@pytorchbot merge

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Merge failed

Reason: 2 additional jobs have failed, first few of them are: trunk ,trunk / cuda11.6-py3.10-gcc7-sm86 / test (default, 2, 4, linux.g5.4xlarge.nvidia.gpu)

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kit1980 commented Nov 17, 2022

@pytorchbot merge

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Merge failed

Reason: 2 additional jobs have failed, first few of them are: trunk ,trunk / cuda11.6-py3.10-gcc7-sm86 / test (default, 2, 4, linux.g5.4xlarge.nvidia.gpu)

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kit1980 commented Nov 17, 2022

@pytorchbot rebase

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pytorchmergebot commented Nov 17, 2022

Successfully rebased issue-68576-prefetch_factor onto refs/remotes/origin/viable/strict, please pull locally before adding more changes (for example, via git checkout issue-68576-prefetch_factor && git pull --rebase)

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kit1980 commented Nov 17, 2022

@pytorchbot merge

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kit1980 commented Nov 17, 2022

@pytorchbot merge

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Thank you for adding this PR. Could you please add a follow up PR to Fix the docstring related to prefetch_factor -> Default is None when num_workers=0 but default is 2 when num_workers>0

@ejguan ejguan added the topic: improvements topic category label Nov 18, 2022
@ejguan ejguan mentioned this pull request Nov 18, 2022
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facebook-github-bot pushed a commit to meta-pytorch/data that referenced this pull request Nov 19, 2022
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Fix tests for Azure and DataLoader (#905)
67afe0c 
Summary:
### Changes

- For Azure test: Please see #904
- For DataLoader test, pytorch/pytorch#88972 introduces an Error when `prefetch_factor` is specified when `num_workers>0`.

Pull Request resolved: #905

Reviewed By: wenleix

Differential Revision: D41403018

Pulled By: ejguan

fbshipit-source-id: 7f1d0677a7311b5c7b3d72b86501301d7a68e7a7
kulinseth pushed a commit to kulinseth/pytorch that referenced this pull request Dec 10, 2022
@blankstatic @kulinseth
Issue 68576 prefetch factor (pytorch#88972)
5f38155 
Fixes pytorch#68576
This PR allows set the `prefetch_factor=None` making it really optional according to the documentation
Pull Request resolved: pytorch#88972
Approved by: https://github.com/kit1980
@nguyenkhoihoang nguyenkhoihoang mentioned this pull request Jan 31, 2024
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When num_workers=0, prefetch_factor is enforced to be 2 but this is missing from documentation

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