How to Speed Up VLA Training Step by Step:3× Acceleration on Pi0.5

Gives concrete, measured optimizations for VLA training, such as removing 256 padding tokens and layering compilation to hide AllReduce. Engineers training embodied models can apply the same steps to cut cost.

• token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.

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