How to implement NPU(graph-based) driver?

[xuke537]

Hi Microsoft，
We plan to implement our NPU driver on Windows. Our NPU is graph-based approache to model execution.
I have a few questions:

1. Can we get the description of the graph（a directed acyclic graph of nodes and edges between them ）in UMD？
2. How to associate DML operators with D3D metacommands？For example, how is the DirectML Convolution operator mapped to a metacommand? The GUID of MetaCommand_Convolution is provided by Microsoft or defined by vendors？If defined by vendor，how to associate it with DML operators？