chore: import upstream snapshot with attribution

op_builder/cpu/no_impl.py

@@ -0,0 +1,24 @@
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+# DeepSpeed Team
+
+from .builder import CPUOpBuilder
+
+
+class NotImplementedBuilder(CPUOpBuilder):
+    BUILD_VAR = "DS_BUILD_NOT_IMPLEMENTED"
+    NAME = "deepspeed_not_implemented"
+
+    def __init__(self, name=None):
+        name = self.NAME if name is None else name
+        super().__init__(name=name)
+
+    def absolute_name(self):
+        return f'deepspeed.ops.comm.{self.NAME}_op'
+
+    def load(self, verbose=True):
+        raise ValueError("This op had not been implemented on CPU backend.")
+
+    def sources(self):
+        return []