Demystify RAM Usage in Multi-Process Data Loaders
A typical PyTorch training program on 8 GPUs with 4 dataloaderworkers per GPU would create at least processes.A naive use of PyTorch dataset and dataloader can easilyreplicate your dataset's RAM usage by 40 times. This issue has probably affected everyone who has done anything nontrivial with PyTorch.In this post, we will explain why it happens, and how to avoid the 40x RAM usage. All code example
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Torch compile does not work on python 3.12 · Issue #120233 · pytorch/pytorch
