[vthumbe1503]

Description

Please include a brief summary of the changes, relevant motivation and context.

Fixes # (issue)

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• 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 not work as expected)
• Infra/Build change
• Code refactoring

Changes

Please list the changes introduced in this PR:

• Change A
• Change B

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge, with a non-blocking request to restore autograd regression coverage.

Findings

1.  Autograd views lose test coverage ▶

Summary

This PR adds shape-preserving autograd views for GroupedTensor and forwards CUDA stream tracking to its backing tensors.

• Same-shape autograd views keep the GroupedTensor layout.
• GroupedTensor records streams on its CUDA backing buffers.

_{Reviews (4) · Last reviewed commit: "remove unecessary test" · Reviewed by Greptile}

[greptile-apps]

Autograd views lose test coverage

Removing test_autograd_identity_supports_varying_shapes drops the direct regression test for the autograd views added by this PR. The remaining tests in test_grouped_tensor.py do not check grad_fn or backward through these views. Restore this test, or equivalent coverage, so changes that break shared buffers or gradient propagation are caught.

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