onnxruntime

11fe6834 - Partition full graph one execution provider at a time (#5635)

Partition full graph one execution provider at a time (#5635) * Partition full graph one EP at a time, bottom-up. Nuphar requires this and it makes life simpler for an EP as they can just check if all nodes in a subgraph are assigned to it when processing the control flow node containing the subgraph. Make a couple of nuphar error messages more meaningful.