Update wholegraph_benchmark.cpp

cpp/bench/common/wholegraph_benchmark.cpp

@@ -1,3 +1,18 @@
+#=============================================================================
+# Copyright (c) 2023, NVIDIA CORPORATION.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#=============================================================================
 #include "wholegraph_benchmark.hpp"
 
 #include "wholememory/communicator.hpp"
@@ -114,4 +129,4 @@ void MultiProcessMeasurePerformance(std::function<void()> run_fn,
   }
 }
 
-}  // namespace wholegraph::bench
+}  // namespace wholegraph::bench