Polish log

test=develop

paddle/fluid/framework/ir/lock_free_optimize_pass.cc

@@ -80,7 +80,7 @@ std::unique_ptr<ir::Graph> LockFreeOptimizePass::ApplyImpl(
       if (IsVarNameEndsWith(merged_grad_var, kGradVarSuffix) &&
           merged_grad_var->outputs.size() == 1u) {
         ir::Node* opt_node = merged_grad_var->outputs[0];
-        LOG(ERROR) << "Found opt node " << opt_node->Name();
+        VLOG(3) << "Found opt node " << opt_node->Name();
 
         // find the backward op connected with sum op
         for (ir::Node* unmerged_grad_var : node->inputs) {
@@ -88,13 +88,13 @@ std::unique_ptr<ir::Graph> LockFreeOptimizePass::ApplyImpl(
               unmerged_grad_var->inputs.size() == 1u) {
             ir::Node* backward_op = unmerged_grad_var->inputs[0];
 
-            LOG(ERROR) << "Found backward_op " << backward_op->Name();
+            VLOG(3) << "Found backward_op " << backward_op->Name();
 
             // find the forward op related to the backward op
             ir::Node* forward_op =
                 FindForwardOpViaBackwardOp(graph.get(), backward_op);
 
-            LOG(ERROR) << "Found forward_op " << forward_op->Name();
+            VLOG(3) << "Found forward_op " << forward_op->Name();
 
             PADDLE_ENFORCE(forward_op);
 
@@ -114,27 +114,26 @@ std::unique_ptr<ir::Graph> LockFreeOptimizePass::ApplyImpl(
       for (Node* optimize_op : sum_op_output->outputs) {
         if (optimize_op->NodeType() == Node::Type::kOperation &&
             optimize_op->Name() == kOptimizerType) {
-          LOG(ERROR) << "remove optimize_op: " << optimize_op->Name() << "_"
+          VLOG(3) << "remove optimize_op: " << optimize_op->Name() << "_"
                   << optimize_op->id();
           graph->RemoveNode(optimize_op);
         }
       }
-      LOG(ERROR) << "remove sum_op_output: " << sum_op_output->Name() << "_"
+      VLOG(3) << "remove sum_op_output: " << sum_op_output->Name() << "_"
               << sum_op_output->id();
       graph->RemoveNode(sum_op_output);
     }
-    LOG(ERROR) << "remove sum_op: " << sum_op->Name() << "_" << sum_op->id();
+    VLOG(3) << "remove sum_op: " << sum_op->Name() << "_" << sum_op->id();
     graph->RemoveNode(sum_op);
   }
 
   for (auto* node : graph->Nodes()) {
     for (Node* output_node : node->outputs) {
       if (output_node->Name() == "sgd") {
-        LOG(ERROR) << "Node link to SGD: " << node->Name() << "_" << node->id()
-                   << " --> " << output_node->Name() << "_"
-                   << output_node->id();
+        VLOG(3) << "Node link to SGD: " << node->Name() << "_" << node->id()
+                << " --> " << output_node->Name() << "_" << output_node->id();
         for (Node* input_node : node->inputs) {
-          LOG(ERROR) << "SGD Input link: " << input_node->Name() << "_"
+          VLOG(3) << "SGD Input link: " << input_node->Name() << "_"
                   << input_node->id() << " --> " << node->Name() << "_"
                   << node->id();
         }
@@ -226,8 +225,7 @@ ir::Node* LockFreeOptimizePass::CreateNewSGDNode(
     }
   }
 
-  LOG(ERROR) << "Create new opt node" << sgd_node->Name() << "_"
-             << sgd_node->id();
+  VLOG(3) << "Create new opt node" << sgd_node->Name() << "_" << sgd_node->id();
 
   return sgd_node;
 }