fix .clone() to .copy() for AutogradBatchNorm

[Farbdrucker]

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Docs change / refactoring / dependency upgrade

Motivation and Context / Related issue

How Has This Been Tested (if it applies)

Checklist

• The documentation is up-to-date with the changes I made.
• I have read the CONTRIBUTING document and completed the CLA (see CONTRIBUTING).
• All tests passed, and additional code has been covered with new tests.

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[lvdmaaten]

Good catch, thanks!

Please note that there are a few more outstanding issues with batch normalization in training mode (see the commented out code below), so I don't expect it will work correctly for training at the moment.

Please also note that the unit tests for batch normalization are disabled because of these issues. They need to be added in test/test_autograd:test_autograd_functions once all issues are fixed.

[Farbdrucker]

Thanks! Just noticed this obvious one.

Please note that there are a few more outstanding issues with batch normalization in training mode (see the commented out code below), so I don't expect it will work correctly for training at the moment.

good to know since this came up when I used the resnet18 like in your imagenet example

Cheers

[lvdmaaten]

@Farbdrucker Can you please sign the CLA so that we can merge your PR?

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@shubho is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[facebook-github-bot]

@shubho merged this pull request in fd950b6.