[GitHub] [incubator-mxnet] szha commented on issue #16376: [RFC] Deferred compute in imperative interface to unify imperative and symbolic interface

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szha commented on issue #16376:  [RFC] Deferred compute in imperative interface to unify imperative and symbolic interface
URL: https://github.com/apache/incubator-mxnet/issues/16376#issuecomment-538706564
 
 
   Thanks for the proposal, @leezu. Since this is a major change, I have some questions regarding the plan.
   
   First, should we restrict this mode to only apply to the new numpy arrays? Since the deferred compute mode won't support reverse shape inference, new blocks that implement the forward interface will not work without implementing the parameter shape inference logic in `infer_shape`. This also applies when migrating the existing Gluon blocks in our API. Since we have plan to adopt numpy array in Gluon, the two changes can potentially happen at the same time.
   
   Also, could you elaborate on what the changes are to the `infer_shape`, especially on how and when it's invoked during deferred initialization?

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