[GitHub] zheng-da opened a new issue #12732: TODO list for supporting dynamic shape

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zheng-da opened a new issue #12732: TODO list for supporting dynamic shape
URL: https://github.com/apache/incubator-mxnet/issues/12732
 
 
   MXNet doesn't support operators that don't allow static shape inference, such as unique and boolean_index. One possible solution is proposed in https://cwiki.apache.org/confluence/display/MXNET/Dynamic+shape
   
   This task can be broken into multiple steps:
   * support such an operator in the imperative execution. A possible modification in the imperative execution is shown here: https://github.com/apache/incubator-mxnet/pull/12400
   * support such an operator in CachedOp. This step requires writing a new executor that runs operators in a computation graph one by one without shape inference and memory planning. We can start with executing operators synchronously, but eventually, we should execute them asynchronously.
   * an optimization is to use the subgraph API to split the computation graph into subgraphs so that a subgraph either contain only operators allowing static shape inference or operators with dynamic shape. 

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