RuntimeError: module must have its parameters and buffers on device cuda:2 (device_ids[0]) but found

最新推荐文章于 2025-08-08 10:12:30 发布

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最新推荐文章于 2025-08-08 10:12:30 发布 · 3.6k 阅读

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#深度学习 #cuda #gpu

RuntimeError: module must have its parameters and buffers on device cuda:2 (device_ids[0]) but found one of them on device: cuda:0

出现这个问题是使用一机多卡分布式训练时，没有调用显卡0，例如使用显卡1,2,3进行训练。
使用的模块是pytorch nn.DataParallel。

下面给出有问题的代码

    device = torch.device("cuda" if args.cuda else "cpu")
    #Try to load models
    if args.model ==

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pytorch分布式 RuntimeError: module must have its parameters and buffers on device cuda:0 (device_ids[0]

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问题 RuntimeError: module must have its parameters and buffers on device cuda:0 (device_ids[0]) but found one of them on device: cuda:1 RuntimeError: module必须在设备cuda:0 (device_ids[0])上有它的参数和缓冲区，但在设备:cuda:1上找到其中一个解决：将 model = torch.nn.DataParallel(model)

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device = torch.device("cuda:1")//在这里指定cuda：X X的值为报错提示的。

报错module must have its parameters and buffers on device，原因是数据和模型不是在同一个显卡上