set_sizes_contiguous is not allowed on a Tensor created from .data or .detach().

[athulvingt]

input.data.resize_(real_cpu.size()).copy_(real_cpu)
RuntimeError: set_sizes_contiguous is not allowed on a Tensor created from .data or .detach().
If your intent is to change the metadata of a Tensor (such as sizes / strides / storage / storage_offset)
without autograd tracking the change, remove the .data / .detach() call and wrap the change in a with torch.no_grad(): block.
For example, change:
x.data.set_(y)
to:
with torch.no_grad():
x.set_(y)