Fix _can_use_flash_attention.
#21512
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Summary of Changes
Hello @james77777778, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request enhances the robustness of the _can_use_flash_attention function within the JAX backend. It achieves this by implementing a more flexible approach to passing keyword arguments to the check_layout utility, ensuring that the function can adapt to changes in check_layout's signature without requiring manual updates.
Highlights
- Dynamic Keyword Argument Handling: The
_can_use_flash_attentionfunction now dynamically determines and passesNonefor any unspecified keyword arguments to thecheck_layoutfunction. This change makes the call more robust and resilient to future modifications in thecheck_layoutfunction's signature, addressing potential issues where new parameters might be added. - New Module Import: The
inspectmodule has been imported intokeras/src/backend/jax/nn.py. This module is crucial for enabling the dynamic introspection of function signatures, which is a core part of the new keyword argument handling logic.
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Code Review
This pull request improves the robustness of _can_use_flash_attention by dynamically determining the parameters for check_layout using inspect.signature. This is a good change that avoids hardcoding parameter names and makes the code more resilient to upstream changes in JAX.
My review includes a suggestion to cache the result of inspect.signature to mitigate potential performance overhead, as this function may be on a hot path. This ensures we get the robustness benefits without a performance penalty on subsequent calls.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #21512 +/- ##
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- Coverage 82.72% 82.71% -0.01%
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Files 567 567
Lines 56214 56219 +5
Branches 8786 8787 +1
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+ Hits 46501 46502 +1
- Misses 7556 7560 +4
Partials 2157 2157
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google-ml-butler
bot
added
kokoro:force-run
ready to pull
Fix #21507
This PR addresses the issue by using
Nonefor kwargs if not specified in_can_use_flash_attention.Hopefully, this change will make the impl more robust.