Solved by JamesDickens in post #2 
              
              
                I believe it would start at (0,0) and then move to (0,2). You can check this out by creating your own conv2d layer, inputting a simple array like [[1,2,3], [4,5,6], [7,8,9] to torch.tensor as your input image (so 1 channel in and 1 channel out), and then setting the weight of the conv layer to be al…