!7441 No need to add atomic for communication op's output

Merge pull request !7441 from laiyongqiang/no_atomic_for_comm_output

mindspore/ccsrc/runtime/device/ascend/kernel_build_ascend.cc

@@ -234,7 +234,13 @@ std::map<AnfNodePtr, std::vector<size_t>> GetCommunicationOpInputInfo(
       for (size_t i = 0; i < input_num; i++) {
         auto input_node = kernel->input(i + 1);
         auto kernel_input = AnfAlgo::VisitKernelWithReturnType(input_node, 0, true);
-        MS_LOG(INFO) << " Add atomic clean for single communication op input, comm:" << kernel->fullname_with_scope()
+        if (AnfAlgo::IsCommunicationOp(kernel_input.first)) {
+          // no need to add atomic for communication op's output
+          MS_LOG(INFO) << "No need to add atomic clean for communication op "
+                       << kernel_input.first->fullname_with_scope() << "'s output";
+          continue;
+        }
+        MS_LOG(INFO) << "Add atomic clean for single communication op input, comm:" << kernel->fullname_with_scope()
                      << " input_node: " << kernel_input.first->fullname_with_scope()
                      << " index: " << kernel_input.second;
         auto iter = comm_input_info_map.find(kernel_input.first);