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Update optimizer param group strategy#7376

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glenn-jocher merged 2 commits intomasterfrom
update/pg
Apr 11, 2022
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Update optimizer param group strategy#7376
glenn-jocher merged 2 commits intomasterfrom
update/pg

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@glenn-jocher glenn-jocher commented Apr 11, 2022 •
edited by UltralyticsAssistant
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Avoid empty lists on missing BathNorm2d models as in #7375

🛠️ PR Summary

Made with ❤️ by Ultralytics Actions

🌟 Summary

Refactor optimizer parameter grouping for increased clarity in train.py.

📊 Key Changes

  • Simplified the variable naming for optimizer parameter groups from g0, g1, g2 to a single list g.
  • Changed parameter group assignments within the optimizer initialization to refer to the new g list indices.
  • Updated the parameter group addition to the optimizer to match the new grouping method.
  • Clarified logging output to reflect these changes by adjusting the counts for each parameter group.

🎯 Purpose & Impact

  • Purpose: To streamline the readability and maintenance of the optimizer parameter grouping by using a single list with indices rather than separate variables.
  • Potential Impact: This change should make the code more maintainable and understandable for developers contributing to or reviewing the train.py script, without affecting the end users' experience or the functionality of the training process.

@glenn-jocher
Update optimizer param group strategy
be3c3a7 
Avoid empty lists on missing BathNorm2d models as in #7375
@glenn-jocher glenn-jocher linked an issue Apr 11, 2022 that may be closed by this pull request
ValueError: optimizer got an empty parameter list when using group normalization instead of batch normalization in yolov5 #7375
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@glenn-jocher glenn-jocher self-assigned this Apr 11, 2022
@glenn-jocher glenn-jocher merged commit bd2dda8 into master Apr 11, 2022
@glenn-jocher glenn-jocher deleted the update/pg branch April 11, 2022 10:34
This was referenced Apr 11, 2022
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BjarneKuehl pushed a commit to fhkiel-mlaip/yolov5 that referenced this pull request Aug 26, 2022
@glenn-jocher
Update optimizer param group strategy (ultralytics#7376)
576f74a 
* Update optimizer param group strategy

Avoid empty lists on missing BathNorm2d models as in ultralytics#7375

* fix init
@hojland hojland mentioned this pull request Oct 17, 2022
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ValueError: optimizer got an empty parameter list when using group normalization instead of batch normalization in yolov5

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