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

A step-by-step account of accelerating Pi0.5 SFT on LoongForge: empty camera-slot pruning, partial torch.compile, FlexAttention, selective recomputation, layered compilation to hide gradient AllReduce, and TorchAO FP8. 2.63x the community t

通过空闲摄像头剪枝、部分编译、FlexAttention、选择性重算、分层编译隐藏梯度 AllReduce 和 TorchAO FP8 等技术,加速 Pi0.5 SFT 在 LoongForge 上的训练

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Seen on hackernews · last checked 2026-10-23.

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