Modify debug_all_outputs.py (#204)

* debug all outputs python script doesn't debug final outputs anymore

* update onnx example model

* add link to onnx standard motivating omitting final graph output debug operators

Samples/CustomOperatorCPU/customize_model/scripts/debug_all_outputs.py

@@ -18,6 +18,11 @@ def create_modified_model(args):
         for output in node.output:
             intermediate_outputs.add(output)
 
+    # remove final graph outputs (see the definition of graph outputs in the onnx standard: https://github.com/onnx/onnx/blob/master/docs/IR.md#user-content-graphs)
+    # it would be invalid to add debug operators after the final graph outputs since execution must be finished once all outputs are written to
+    for output in model.graph.output:
+        intermediate_outputs.remove(output.name)
+
     # create a debug operator that consumes each intermediate output
     # debug operator file path attribute is constructed by the name of the intermediate output
     for output in intermediate_outputs: