!1447 LinkToPotentialPrecedenceNode

From: @dimitri_rose
Reviewed-by: @sheng-nan,@ji_chen
Signed-off-by: @lbisdaddy

ge/graph/passes/atomic_addr_clean_pass.cc

@@ -222,6 +222,39 @@ Status AtomicAddrCleanPass::HandleNormalGraph(ComputeGraphPtr &graph, const vect
       }
     }
   }
+  return LinkToPotentialPrecedenceNode(graph, clean_addr_node);
+}
+
+// Add control edges from atomic clean node to all potential precedence nodes which may execute before atomic clean
+// node. We hope that atomic clean node can execute with the highest priority in the entire graph. Because of stream
+// concurrency mechanism, only placing it at the head can not ensure that priority. Therefore, we need to add control
+// edges from atomic clean node to the nodes that may be the first node on each stream. Generally, the first nodes on
+// each stream are successors of Data/Variable, and Data/Variable won't generate task or execute, so we link to the
+// successors of Data/Variable.
+Status AtomicAddrCleanPass::LinkToPotentialPrecedenceNode(ComputeGraphPtr &graph, NodePtr &atomic_clean_node) {
+  GELOGD("Start to add control edges from %s to all second-nodes behind first-nodes which have no input.",
+         atomic_clean_node->GetName().c_str());
+  auto out_ctrl_anchor = atomic_clean_node->GetOutControlAnchor();
+  GE_CHECK_NOTNULL(out_ctrl_anchor);
+
+  for (const auto &node : graph->GetDirectNode()) {
+    GE_CHECK_NOTNULL(node);
+    bool need_handle = (node->GetType() == DATA || node->GetType() == VARIABLE) && node->GetInAllNodes().empty();
+    if (!need_handle) {
+      continue;
+    }
+    auto second_nodes = node->GetOutAllNodes();
+    for (const auto &second_node : second_nodes) {
+      GE_CHECK_NOTNULL(second_node);
+      auto in_ctrl_anchor = second_node->GetInControlAnchor();
+      GE_CHECK_NOTNULL(in_ctrl_anchor);
+      if (!out_ctrl_anchor->IsLinkedWith(in_ctrl_anchor)) {
+        GE_CHK_STATUS_RET(out_ctrl_anchor->LinkTo(in_ctrl_anchor));
+        GELOGD("Add control edge from %s to %s.", atomic_clean_node->GetName().c_str(), second_node->GetName().c_str());
+      }
+    }
+  }
+
   return SUCCESS;
 }
 

ge/graph/passes/atomic_addr_clean_pass.h

@@ -68,6 +68,14 @@ class AtomicAddrCleanPass : public GraphPass {
   Status LinkToAtomicNode(const NodePtr &atomic_node, NodePtr &atomic_clean_node);
 
   /**
+   * Link atomic clean node to all potential precedence nodes which may execute before atomic clean node
+   * @param graph
+   * @param atomic_clean_node
+   * @return
+   */
+  Status LinkToPotentialPrecedenceNode(ComputeGraphPtr &graph, NodePtr &atomic_clean_node);
+
+  /**
    * Check if this node is atomic op.
    * @param node
    * @return

tests/ut/ge/graph/passes/atomic_addr_clean_pass_unittest.cc

@@ -48,18 +48,49 @@ public:
     return node;
   }
 
+  int CountOfAtomicCleanNode() {
+    int node_num = 0;
+    for (NodePtr &node : graph_->GetDirectNode()) {
+      if (node->GetType() == ATOMICADDRCLEAN) {
+        ++node_num;
+      }
+    }
+    return node_num;
+  }
+
   ComputeGraphPtr graph_;
 };
 
-// node1 -> node2 -> node3
+/*
+ *     Data                       Data  Atomic_clean 
+ *      |                           |   /  |
+ *     relu                         relu   |
+ *      |               ==>           |    |
+ *    relu(atomic)               relu(atomic) 
+ *      |                             |
+ *   netoutput                    netoutput
+ */
 TEST_F(UtestGraphPassesAtomicAddrCleanPass, pass_run_success) {
   auto node1 = NewNode("node1", DATA, 0, 1);
+
   auto node2 = NewNode("node2", RELU, 1, 1);
-  auto node3 = NewNode("node3", NETOUTPUT, 1, 0);
+  auto node3 = NewNode("node3", RELU, 1, 1);
+  auto op_desc = node3->GetOpDesc();
+  vector<int64_t> atomic_input_index = {123, 456};
+  AttrUtils::SetListInt(op_desc, "atomic_input_index", atomic_input_index);
+
+  auto node4 = NewNode("node4", NETOUTPUT, 1, 0);
   GraphUtils::AddEdge(node1->GetOutDataAnchor(0), node2->GetInDataAnchor(0));
   GraphUtils::AddEdge(node2->GetOutDataAnchor(0), node3->GetInDataAnchor(0));
+  GraphUtils::AddEdge(node3->GetOutDataAnchor(0), node4->GetInDataAnchor(0));
   AtomicAddrCleanPass atomi_addr_clean_pass;
   Status ret = atomi_addr_clean_pass.Run(graph_);
   EXPECT_EQ(ret, SUCCESS);
+  EXPECT_EQ(1, CountOfAtomicCleanNode());
+  
+  auto atomic_clean = graph_->FindNode("atomic_addr_clean");
+  EXPECT_NE(atomic_clean, nullptr);
+  auto out_ctrl_nodes = atomic_clean->GetOutControlNodes();
+  EXPECT_EQ(out_ctrl_nodes.size(), 2);
 }
 }  // namespace ge