ZhennanQin commented on a change in pull request #12530: Implement mkldnn 
convolution fusion and quantization.
URL: https://github.com/apache/incubator-mxnet/pull/12530#discussion_r221416274
 
 

 ##########
 File path: src/operator/quantization/quantize_graph_pass.cc
 ##########
 @@ -89,17 +89,41 @@ std::vector<NodeEntry> 
OfflineParams(std::vector<NodeEntry>&& outputs,
   return outputs;
 }
 
-inline bool NeedQuantize(NodePtr node, const std::unordered_set<NodePtr> 
excluded_nodes) {
+inline bool NeedQuantize(NodePtr node, const std::unordered_set<std::string>& 
excluded_nodes) {
   static auto& quantized_op_map = 
Op::GetAttr<mxnet::FQuantizedOp>("FQuantizedOp");
-  return quantized_op_map.count(node->op()) && !excluded_nodes.count(node);
+  if (quantized_op_map.count(node->op())) {
+    bool excluded = false;
+    if (node->attrs.subgraphs.size()) {
+      // This is a subgraph node, try to match subgraph name first,
+      // and then try to match inner node.
+      if (excluded_nodes.count(node->attrs.name)) {
+        excluded = true;
+      } else {
+        auto subgraph_sym = node->attrs.subgraphs[0];
 
 Review comment:
   CHECK is added.

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