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Why does my PyTorch DataLoader fail when a worker touches CUDA?

I work on CloudGPU. Keep dataset decoding and collation on the CPU, then move each batch to CUDA in the main training process. If a worker initializes CUDA after a fork, adding more workers can expose a process-initialization problem rather than a model problem. 1. Find the CUDA operation inside th…

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  1. 2026-11-11 05:25 · DEV Community — Machine Learning
    Why does my PyTorch DataLoader fail when a worker touches CUDA?

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