Debugging JAX & Flax NNX (Part 1)

From the creator

You know that debugging is crucial when doing any kind of software development. JAX and Flax NNX offer amazing performance and a clean API, but debugging can feel different due to JAX's compilation model. Today, we'll bridge the gap, exploring how to debug JAX and NNX effectively, relating techniques back to your PyTorch experience. We'll focus specifically on the Flax NNX API. This is the first episode of a three episode series on debugging. This episode introduces the core problem of JAX's JIT compilation and presents the most direct, fundamental tools for inspecting runtime values, introducing the basics for anyone new to JAX debugging. Resources: Learn more → https://goo.gle/learning-jax Subscribe to Google for Developers → https://goo.gle/developers Speaker: Robert Crowe

Published 2025-12-04 · Watch on YouTube ↗
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