Source sync: Add Flax configuration updates and improve WAN trainer profiling#326
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michelle-yooh wants to merge 1 commit intomainfrom
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Source sync: Add Flax configuration updates and improve WAN trainer profiling#326michelle-yooh wants to merge 1 commit intomainfrom
michelle-yooh wants to merge 1 commit intomainfrom
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PiperOrigin-RevId: 866156279
entrpn
approved these changes
Feb 6, 2026
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This PR contains source synchronization from internal MaxDiffusion updates with the following improvements:
Changes:
Flax Configuration - Add automatic Flax config update to disable variable sharding by default in the main init.py, ensuring consistent behavior across the codebase.
Configuration Loading Fix - Improve model configuration loading in configuration_utils.py to prioritize subfolder-specific configs when available. This ensures models with subfolder structures load their configs correctly before falling back to the root directory.
WAN Trainer Profiling Enhancements - Add jax.named_scope() annotations in wan_trainer.py to improve performance profiling:
These changes improve model loading robustness, provide better profiling granularity for performance analysis, and ensure consistent Flax behavior across the framework.
PiperOrigin-RevId: 866156279