Multigpu training becomes slower in Kaggle

[BraunGe]

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Question

Hello,

Recently, Kaggle begun to provide T42 GPU option. However, I found that when I train the YOLOv5s with single P100, it is much faster than T42. The batch size for P100 is 64, for T4*2 is 128 (64 each).

In my mind, if we double the batch size, it could run faster.

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[github-actions]

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[glenn-jocher]

@BraunGe this is incorrect multi-GPU usage. See Multi-GPU tutorial for correct usage:

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[github-actions]

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