RuntimeError: Input type and weight type should be the same

pytorch使用GPU计算报错:

RuntimeError: Input type (torch.FloatTensor) and weight type (torch.cuda.FloatTensor) should be the same

原因是,还必须将每一步的输入和目标也发送到GPU。

示例:

原始错误代码:

...

net = Net()
net.to(device)  # GPU版本,递归遍历所有模块,并将其参数和缓冲区转换为CUDA张量

...

dataiter = iter(trainloader)  # 数据迭代器
images = dataiter.next()[0]
labels = dataiter.next()[1]

...

改进代码:

device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")

...

net = Net()
net.to(device)  # GPU版本,递归遍历所有模块,并将其参数和缓冲区转换为CUDA张量

...

dataiter = iter(trainloader)  # 数据迭代器
images = dataiter.next()[0].to(device)
labels = dataiter.next()[1].to(device)

...

 

 

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