Add an option to cache NNX traversals in PEFT trainer.#928
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copybara-service[bot] merged 1 commit intomainfrom Dec 22, 2025
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Add an option to cache NNX traversals in PEFT trainer.#928copybara-service[bot] merged 1 commit intomainfrom
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Add an option to cache NNX traversals in PEFT trainer.
In peft_trainer.py, wrap
train_stepandeval_stepwithnnx.cached_partialto cache NNX graph traversals for performance as documented in https://flax.readthedocs.io/en/latest/guides/performance.html#caching-graph-node-traversalsThis was show to significantly reduce the time spent in Python traversing the graph, which can be important for smaller models (e.g. Gemma3 1B) that may not spend that much accelerator time per step.