[Refine Paddle-TRT INT8]: Support PaddleSlim's Resnet50, Mobilenetv1, Yolov3 models for Inference. (#22483)

* add int8 op teller for trt.

* refine trt int8

* add int8 op teller for trt.
test=develop

paddle/fluid/inference/analysis/ir_passes/tensorrt_subgraph_pass.cc

@@ -34,10 +34,13 @@ using framework::ir::Node;
 void analysis::TensorRtSubgraphPass::ApplyImpl(
     framework::ir::Graph *graph) const {
   framework::ir::FusePassBase::Init("tensorrt_subgraph_pass", graph);
-
-  auto teller = [](const framework::ir::Node *node) {
+  auto enable_int8 = Get<bool>("enable_int8");
+  auto use_calib_mode = Get<bool>("use_calib_mode");
+  bool no_calib_int8 = enable_int8 && !(use_calib_mode);
+  auto teller = [&](const framework::ir::Node *node) {
     if (!node->IsOp() || !node->Op()) return false;
-    return tensorrt::OpTeller::Global().Tell(node->Op()->Type(), *node->Op());
+    return tensorrt::OpTeller::Global().Tell(node->Op()->Type(), *node->Op(),
+                                             no_calib_int8);
   };
 
   framework::ir::SubGraphFuser fuser(

paddle/fluid/inference/tensorrt/convert/pool2d_op.cc

@@ -98,6 +98,14 @@ class Pool2dOpConverter : public OpConverter {
 
     nvinfer1::ILayer *layer = nullptr;
 
+    if (op_desc.HasAttr("enable_int8")) {
+#if IS_TRT_VERSION_GE(5000)
+      CHECK(op_desc.HasAttr("X_scale"));
+      float input_scale = boost::get<float>(op_desc.GetAttr("X_scale"));
+      engine_->SetTensorDynamicRange(input1, input_scale);
+#endif
+    }
+
     if (global_pooling == true) {
       nv_ksize.d[0] = input_shape.d[input_dims - 2];
       nv_ksize.d[1] = input_shape.d[input_dims - 1];
@@ -159,14 +167,6 @@ class Pool2dOpConverter : public OpConverter {
 
     auto output_name = op_desc.Output("Out")[0];
     RreplenishLayerAndOutput(layer, "pool2d", {output_name}, test_mode);
-
-    if (op_desc.HasAttr("enable_int8")) {
-#if IS_TRT_VERSION_GE(5000)
-      CHECK(op_desc.HasAttr("X_scale"));
-      float input_scale = boost::get<float>(op_desc.GetAttr("X_scale"));
-      engine_->SetTensorDynamicRange(input1, input_scale);
-#endif
-    }
   }
 };
 

paddle/fluid/inference/tensorrt/convert/softmax_op.cc

@@ -36,12 +36,8 @@ class SoftMaxOpConverter : public OpConverter {
     auto output_name = op_desc.Output("Out")[0];
     RreplenishLayerAndOutput(layer, "softmax", {output_name}, test_mode);
 
-    if (op_desc.HasAttr("out_scale")) {
-#if IS_TRT_VERSION_GE(5000)
-      float out_scale = boost::get<float>(op_desc.GetAttr("out_scale"));
-      engine_->SetTensorDynamicRange(layer->getOutput(0), out_scale);
-#endif
-    }
+    // The trt will not run int for softmax.
+    engine_->SetTensorDynamicRange(input1, 1.0);
   }
 };
 

paddle/fluid/inference/tensorrt/op_teller.cc

@@ -26,12 +26,20 @@ struct SimpleOpTypeSetTeller : public Teller {
 #endif
   }
 
-  bool operator()(const std::string& op_type,
-                  const framework::OpDesc& desc) override {
-    return teller_set.count(op_type);
+  bool operator()(const std::string& op_type, const framework::OpDesc& desc,
+                  bool use_no_calib_int8) override {
+    if (use_no_calib_int8) {
+      return int8_teller_set.count(op_type);
+    } else {
+      return teller_set.count(op_type);
+    }
   }
 
  private:
+  // use this set for no calib int8.
+  std::unordered_set<std::string> int8_teller_set{
+      {"mul", "conv2d", "pool2d", "relu", "depthwise_conv2d", "softmax",
+       "batch_norm", "elementwise_add", "leaky_relu", "fc"}};
   std::unordered_set<std::string> teller_set{{
       "mul",
       "conv2d",
@@ -61,11 +69,15 @@ struct SimpleOpTypeSetTeller : public Teller {
   }};
 };
 
-bool OpTeller::Tell(const std::string& op_type, const framework::OpDesc& desc) {
+bool OpTeller::Tell(const std::string& op_type, const framework::OpDesc& desc,
+                    bool use_no_calib_int8) {
   // do not support the op which is labeled the `skip_quant`
-  if (desc.HasAttr("op_namescope") &&
-      boost::get<std::string>(desc.GetAttr("op_namescope")) == "/skip_quant_2/")
+  if ((desc.HasAttr("namescope") &&
+       boost::get<std::string>(desc.GetAttr("op_namescope")) ==
+           "/skip_quant_2/") ||
+      desc.HasAttr("skip_quant"))
     return false;
+
   for (auto& teller : tellers_) {
     if (op_type == "pool2d" || op_type == "conv2d" ||
         op_type == "depthwise_conv2d" || op_type == "conv2d_transpose") {
@@ -73,7 +85,7 @@ bool OpTeller::Tell(const std::string& op_type, const framework::OpDesc& desc) {
           boost::get<std::vector<int>>(desc.GetAttr("paddings"));
       if (paddings.size() > 2) return false;
     }
-    if ((*teller)(op_type, desc)) return true;
+    if ((*teller)(op_type, desc, use_no_calib_int8)) return true;
   }
   return false;
 }

paddle/fluid/inference/tensorrt/op_teller.h

@@ -31,7 +31,8 @@ namespace tensorrt {
  */
 struct Teller {
   virtual bool operator()(const std::string& op_type,
-                          const framework::OpDesc& desc) = 0;
+                          const framework::OpDesc& desc,
+                          bool use_no_calib_int8) = 0;
 
   virtual ~Teller() = default;
 };
@@ -57,7 +58,8 @@ class OpTeller {
     return *x;
   }
 
-  bool Tell(const std::string& op_type, const framework::OpDesc& desc);
+  bool Tell(const std::string& op_type, const framework::OpDesc& desc,
+            bool use_no_calib_int8 = false);
 
  private:
   OpTeller();