Add set_config option to python backend (#4373)

* Add set_config option to python backend

* Address reviewer comment
Co-authored-by: Robert Kimball <robert.kimball@intel.com>

python/ngraph/runtime.py

@@ -15,7 +15,7 @@
 # ******************************************************************************
 """Provide a layer of abstraction for the ngraph++ runtime environment."""
 import logging
-from typing import List, Union
+from typing import Dict, List, Union
 
 import numpy as np
 
@@ -42,6 +42,10 @@ class Runtime:
         self.backend_name = backend_name
         self.backend = Backend.create(backend_name)
 
+    def set_config(self, config):  # type: (Dict[str, str]) -> None
+        """Set the backend configuration."""
+        self.backend.set_config(config, '')
+
     def __repr__(self):  # type: () -> str
         return "<Runtime: Backend='{}'>".format(self.backend_name)
 

python/pyngraph/runtime/backend.cpp

@@ -48,4 +48,5 @@ void regclass_pyngraph_runtime_Backend(py::module m)
                     const ngraph::element::Type&, const ngraph::Shape&)) &
                     ngraph::runtime::Backend::create_tensor);
     backend.def("compile", &compile);
+    backend.def("set_config", &ngraph::runtime::Backend::set_config);
 }

python/test/ngraph/test_basic.py

@@ -211,3 +211,9 @@ def test_constant_get_data_unsigned_integer(data_type):
     node = ng.constant(input_data, dtype=data_type)
     retrieved_data = node.get_data()
     assert np.allclose(input_data, retrieved_data)
+
+
+def test_backend_config():
+    dummy_config = {'dummy_option': 'dummy_value'}
+    # Expect no throw
+    ng.runtime(backend_name=test.BACKEND_NAME).set_config(dummy_config)