chore: import upstream snapshot with attribution

python/paddle/distributed/communication/stream/__init__.py

@@ -0,0 +1,38 @@
+# Copyright (c) 2022 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.
+# 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.
+
+from .all_gather import all_gather
+from .all_reduce import all_reduce
+from .all_to_all import alltoall, alltoall_single
+from .broadcast import broadcast
+from .gather import gather
+from .recv import recv
+from .reduce import reduce
+from .reduce_scatter import reduce_scatter
+from .scatter import scatter
+from .send import send
+
+__all__ = [
+    "all_gather",
+    "all_reduce",
+    "alltoall",
+    "alltoall_single",
+    "broadcast",
+    "reduce",
+    "reduce_scatter",
+    "recv",
+    "scatter",
+    "send",
+    "gather",
+]