Created by: reyoung

Since we try to use LODTensor instead of Tensor as our basic data type for Input/Output variables of operators, we should:

• Using LODTensor instead of Tensor in current code. For example, in current implementation, like here, we should use Input<LODTensor>() instead of Input<Tensor>().

• How does output inherit LOD information from one of the operator's inputs?

  • Should that be registered in OpInfo. e.g. Register Output["out"] inherits input["X"]'s lod information?
  • Or is that should be hand written in operator implementation by each developer. (which could be very noising).