@dboyliao Can you add some quick comments on theStridedIterator in this chat? I'm pretty sure you wrote the original stride op

Ok.
The basic idea ofStridedIterator is simple, it will give you the linear index/offset of the source tensor given the stride slice specs.
For example, if the given slice specs are0:3 and1:5:2 and input tensor of shape(5, 10), all possible strided indices are:

• (0, 1), with linear index1
• (0, 3), with linear index3
  ....
• (2, 9), with linear index29

Then in the strided slice op, I only need to copy value from source tensor based on the linear indices.