Gemma 4 in Pure JAX: What Ports from TPU to GPU, and What Doesn't

This article is about running a hand-written Gemma 4 port in pure JAX on three different accelerators, and about the two places the abstraction leaks. The code is here: github. com/xbill9/gemma4-dev What is this project trying to Do?

Source: [Dev.to](https://dev.to/gde/gemma-4-in-pure-jax-what-ports-from-tpu-to-gpu-and-what-doesnt-3m09)