'int' object has no attribute 'cpu'

This error occurs when you try to call the 'cpu' method on an integer object. In PyTorch, the 'cpu' method is used to move a tensor from the GPU to the CPU.

To resolve this error, make sure that you are calling the 'cpu' method on a PyTorch tensor object, not an integer object. If you are not sure where the error is occurring, you can try printing out the value of the variable or object that you are trying to call the 'cpu' method on to make sure it is a tensor.

Example:

import torch

# Correct usage of 'cpu' method
x = torch.tensor([1, 2, 3])
y = x.cuda()
z = y.cpu()  # Move tensor from GPU to CPU

# Incorrect usage of 'cpu' method
a = 5
b = a.cpu()  # This will raise the 'int' object has no attribute 'cpu' error