Expected all tensors to be on the same device, but found at least two devices

Expected all tensors to be on the same device, but found at least two devices,

原因是计算的过程中，两个不同类型的变量在一起进行运算，即一个变量存储在gpu中，一个变量存储在cpu中，两个变量的存储位置冲突，导致无法计算，把变量统一下就行

    x = x + kp_x_ofst
    y = y + kp_y_ofst
    x = torch.reshape(x, [-1])  
    y = torch.reshape(y, [-1])
    
    x = x.to('cpu')
    y = y.to('cpu')
 
    x0 = torch.floor(x).to(torch.int32)
    x1 = x0 + 1
    y0 = torch.floor(y).to(torch.int32)
    y1 = y0 + 1
    # device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
    x0 = torch.clamp(x0, zero, max_x)
    x1 = torch.clamp(x1, zero, max_x)
    y0 = torch.clamp(y0, zero, max_y)
    y1 = torch.clamp(y1, zero, max_y)