The meaning of reduce=False

#1

Is:

loss = nn.MSELoss(reduce=False)
loss = loss.mean()

and:

loss = nn.MSELoss(reduce=True)

The same?
If yes, is it the same for all loss functions with the reduce option? If no, what do I need to do to get the same result if I choose to do reduce=False?

#2

https://github.com/pytorch/pytorch/blob/master/torch/nn/functional.py
At line 1553 you can see the code for a pointwise loss. Then yes, it is the same if size_average is true.