Set TensorProxy shape's history to None if tensor's history is unavailable #2755
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Pull Request Overview
This PR fixes an AssertionError that occurs when creating TensorProxy objects with dynamic shapes for DTensors that lack history information. The fix ensures that when a tensor's history is unavailable, the shape's IntegerProxy objects are created with history=None instead of attempting to construct a ProvenanceRecord from a None value.
- Modified the
tensorproxyfunction to conditionally create shape provenance records only when history is available - Added the first test case for DTensor with dynamic shapes to ensure proper caching behavior
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| thunder/core/proxies.py | Added conditional logic to handle None history when creating shape IntegerProxy objects for symbolic values |
| thunder/tests/distributed/test_dtensor.py | Added test case for DTensor.from_local with symbolic values caching to verify dynamic shape handling |
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kshitij12345
approved these changes
Nov 19, 2025
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kshitij12345
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kshitij12345
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LGTM, thanks @shino16
KaelanDt
approved these changes
Nov 26, 2025
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This is to fix the AssertionError reported in #2677 (comment).
See #2746 (comment) for the discussion on correctness.
I added a test for this, which was the first test related to DTensors with dynamic shapes.