follow comments to refine PR 32144 (#32174)

paddle/fluid/memory/allocation/npu_allocator.cc

-// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

paddle/fluid/memory/allocation/npu_allocator.h

-// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

paddle/fluid/platform/npu_info.cc

-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

paddle/fluid/platform/npu_info.h

-/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

paddle/fluid/platform/stream/npu_stream.cc

-/* Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+/* Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
 
 licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

python/paddle/device.py

@@ -39,9 +39,11 @@ __all__ = [
 _cudnn_version = None
 
 
+# TODO: WITH_ASCEND_CL may changed to WITH_NPU or others in the future
+# for consistent.
 def is_compiled_with_npu():
     """
-    Whether this whl package can be used to run the model on NPU.
+    Whether paddle was built with WITH_ASCEND_CL=ON to support Ascend NPU.
 
     Returns (bool): `True` if NPU is supported, otherwise `False`.