diff --git a/paddle/fluid/lite/core/kernel.cc b/paddle/fluid/lite/core/kernel.cc
index d297f0f1488040bfa0826d9341a9a1bb2e348ecc..c86e38b3801340638c9627f29d9b97aa78e1ec3a 100644
--- a/paddle/fluid/lite/core/kernel.cc
+++ b/paddle/fluid/lite/core/kernel.cc
@@ -24,6 +24,31 @@ std::string KernelBase::summary() const {
   return ss.str();
 }
 
+const Type *KernelBase::GetInputDeclType(const std::string &arg_name) {
+  CHECK(!op_type_.empty()) << "op_type should be set first";
+  const auto *type = ParamTypeRegistry::Global().RetrieveInArgument(
+      place(), GenParamTypeKey(), arg_name);
+  CHECK(type) << "no type registered for kernel [" << op_type_
+              << "] input argument [" << arg_name << "]"
+              << " with key " << GenParamTypeKey();
+  return type->type;
+}
+
+const Type *KernelBase::GetOutputDeclType(const std::string &arg_name) {
+  CHECK(!op_type_.empty()) << "op_type should be set first";
+  const auto *type = ParamTypeRegistry::Global().RetrieveOutArgument(
+      place(), GenParamTypeKey(), arg_name);
+  CHECK(type) << "no type registered for kernel [" << op_type_
+              << "] output argument [" << arg_name << "]";
+  return type->type;
+}
+
+std::string KernelBase::GenParamTypeKey() const {
+  std::stringstream ss;
+  ss << op_type() << "/" << alias_;
+  return ss.str();
+}
+
 bool ParamTypeRegistry::KeyCmp::operator()(
     const ParamTypeRegistry::key_t &a,
     const ParamTypeRegistry::key_t &b) const {
@@ -37,6 +62,5 @@ std::ostream &operator<<(std::ostream &os,
      << other.place.DebugString();
   return os;
 }
-
 }  // namespace lite
 }  // namespace paddle
\ No newline at end of file
diff --git a/paddle/fluid/lite/core/kernel.h b/paddle/fluid/lite/core/kernel.h
index a984a7a99e4b080a7a46661b54ad058422c88be6..4eed43f4cf16edddfd4d7b58db942afe2774034f 100644
--- a/paddle/fluid/lite/core/kernel.h
+++ b/paddle/fluid/lite/core/kernel.h
@@ -73,28 +73,11 @@ class KernelBase {
   void set_op_type(const std::string& type) { op_type_ = type; }
   const std::string& op_type() const { return op_type_; }
 
-  void Torch() {}
+  // Get input declaration Type.
+  const Type* GetInputDeclType(const std::string& arg_name);
 
-  // Get input declaration type.
-  const Type* GetInputDeclType(const std::string& arg_name) {
-    CHECK(!op_type_.empty()) << "op_type should be set first";
-    const auto* type = ParamTypeRegistry::Global().RetrieveInArgument(
-        place(), GenParamTypeKey(), arg_name);
-    CHECK(type) << "no type registered for kernel [" << op_type_
-                << "] input argument [" << arg_name << "]"
-                << " with key " << GenParamTypeKey();
-    return type->type;
-  }
-
-  // Get output declaration type.
-  const Type* GetOutputDeclType(const std::string& arg_name) {
-    CHECK(!op_type_.empty()) << "op_type should be set first";
-    const auto* type = ParamTypeRegistry::Global().RetrieveOutArgument(
-        place(), GenParamTypeKey(), arg_name);
-    CHECK(type) << "no type registered for kernel [" << op_type_
-                << "] output argument [" << arg_name << "]";
-    return type->type;
-  }
+  // Get output declaration Type.
+  const Type* GetOutputDeclType(const std::string& arg_name);
 
   void set_alias(const std::string& x) { alias_ = x; }
   const std::string& alias() const { return alias_; }
@@ -110,14 +93,11 @@ class KernelBase {
   std::string summary() const;
   // Long human-readable document.
   virtual std::string doc() const { return ""; }
-
-  std::string GenParamTypeKey() const {
-    std::stringstream ss;
-    ss << op_type() << "/" << alias_;
-    return ss.str();
-  }
+  // Generate the key of the parameter type.
+  std::string GenParamTypeKey() const;
 
   virtual ~KernelBase() = default;
+  void Torch() {}
 
  protected:
   std::unique_ptr<KernelContext> context_;
@@ -144,10 +124,7 @@ class OpKernel : public KernelBase {
   PrecisionType precision() const override { return Precision; }
   DataLayoutType layout() const override { return DataLayout; }
   Place place() const override { return Place{Target, Precision, DataLayout}; }
-  std::string name() const override {
-    return op_type() + ":" + TargetToStr(Target) + "/" +
-           PrecisionToStr(Precision) + "/" + DataLayoutToStr(DataLayout);
-  }
+  std::string name() const override;
 
   void Touch() {}
 
@@ -158,5 +135,11 @@ class OpKernel : public KernelBase {
   std::unique_ptr<KernelContext> ctx_;
 };
 
+template <TargetType Target, PrecisionType Precision, DataLayoutType DataLayout>
+std::string OpKernel<Target, Precision, DataLayout>::name() const {
+  return op_type() + ":" + TargetToStr(Target) + "/" +
+         PrecisionToStr(Precision) + "/" + DataLayoutToStr(DataLayout);
+}
+
 }  // namespace lite
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/memory.cc b/paddle/fluid/lite/core/memory.cc
index 205452f0398fa58d9471a4b4ae2db019993ce6d4..39f312be8d4bf3963c885bbcc501e181f03b6e36 100644
--- a/paddle/fluid/lite/core/memory.cc
+++ b/paddle/fluid/lite/core/memory.cc
@@ -15,7 +15,5 @@
 #include "paddle/fluid/lite/core/memory.h"
 
 namespace paddle {
-namespace framework {
 namespace lite {}  // namespace lite
-}  // namespace framework
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/op_lite.cc b/paddle/fluid/lite/core/op_lite.cc
index d189fb15d999617fd4a9a6827792108f69a8987f..0ce27e9a5673fe026dda42c1e1da5ea79477d3e4 100644
--- a/paddle/fluid/lite/core/op_lite.cc
+++ b/paddle/fluid/lite/core/op_lite.cc
@@ -55,17 +55,6 @@ std::vector<std::unique_ptr<KernelBase>> OpLite::CreateKernels(
   return kernels;
 }
 
-void OpLite::PickKernel(const std::vector<Place> &valid_places,
-                        OpLite::KernelStrategy kernel_strategy) {
-  switch (kernel_strategy) {
-    case KernelStrategy::kStatic:
-      StaticPickKernel(valid_places);
-      break;
-    default:
-      LOG(FATAL) << "unsupported kernel strategy";
-  }
-}
-
 bool OpLite::Run() {
   CHECK(kernel_);
   SyncInputEvents();
@@ -120,5 +109,72 @@ bool OpInfo::GetOutputArgname(const std::string &value_name,
   }
   return false;
 }
+
+void OpInfo::ExtractInputsAndOutputs(const framework::proto::OpDesc &opdesc) {
+  for (const auto &item : opdesc.inputs()) {
+    for (const auto &x : item.arguments()) {
+      input_names_.push_back(x);
+    }
+  }
+  for (const auto &item : opdesc.outputs()) {
+    for (const auto &x : item.arguments()) {
+      output_names_.push_back(x);
+    }
+  }
+}
+
+void OpInfo::CollectInputAndOutputArgnames(
+    const framework::proto::OpDesc &opdesc) {
+  for (const auto &item : opdesc.inputs()) {
+    input_argnames_.push_back(item.parameter());
+  }
+  for (const auto &item : opdesc.outputs()) {
+    output_argnames_.push_back(item.parameter());
+  }
+}
+
+void OpInfo::CollectArguments(const framework::proto::OpDesc &opdesc) {
+  for (const auto &item : opdesc.inputs()) {
+    for (auto &x : item.arguments()) {
+      input_argument_[item.parameter()].push_back(x);
+    }
+  }
+  for (const auto &item : opdesc.outputs()) {
+    for (auto &x : item.arguments()) {
+      output_argument_[item.parameter()].push_back(x);
+    }
+  }
+}
+
+void OpInfo::Build(const framework::proto::OpDesc &desc) {
+  ExtractInputsAndOutputs(desc);
+  CollectInputAndOutputArgnames(desc);
+  CollectArguments(desc);
+  desc_.reset(new framework::proto::OpDesc(desc));
+}
+
+const std::map<std::string, std::list<std::string>> &OpInfo::input_argument()
+    const {
+  return input_argument_;
+}
+
+const std::map<std::string, std::list<std::string>> &OpInfo::output_argument()
+    const {
+  return output_argument_;
+}
+
+const std::list<std::string> &OpInfo::input_argnames() const {
+  return input_argnames_;
+}
+
+const std::list<std::string> &OpInfo::output_argnames() const {
+  return output_argnames_;
+}
+
+const framework::proto::OpDesc &OpInfo::desc() const {
+  CHECK(desc_) << "desc has't set";
+  return *desc_;
+}
+
 }  // namespace lite
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/op_lite.h b/paddle/fluid/lite/core/op_lite.h
index 85c9cec7fb854f1a8bab8e4d1c05111f6112dfa3..bfeb32d1a7215185debc1dc6450ea425d2c383fd 100644
--- a/paddle/fluid/lite/core/op_lite.h
+++ b/paddle/fluid/lite/core/op_lite.h
@@ -54,16 +54,6 @@ class OpInfo;
  */
 class OpLite : public Registry {
  public:
-  // The strategies to pick a kernel from candidates.
-  enum class KernelStrategy {
-    // Return the user specified one.
-    kStatic = 0,
-    // Specify the expected kernel externally.
-    kSpecified,
-    // Run each kernel to evaluate and get the best kernel.
-    kRuntime,
-  };
-
   OpLite() = default;
   OpLite(const std::string &type) : op_type_(type) {}
   OpLite(const std::vector<Place> &valid_places)
@@ -91,10 +81,6 @@ class OpLite : public Registry {
 
   const Place &kernel_place() const { return kernel_place_; }
 
-  // NOTE This might be discarded.
-  void PickKernel(const std::vector<Place> &valid_places,
-                  KernelStrategy kernel_strategy = KernelStrategy::kStatic);
-
   // Create all the kernels for the valid targets.
   std::vector<std::unique_ptr<KernelBase>> CreateKernels(
       const std::vector<Place> &places, const std::string &kernel_type = "");
@@ -147,71 +133,26 @@ class OpInfo {
  public:
   // To avoid the bugs from legancy framework::OpDesc, we use the ProtoBuf
   // message instead.
-  void Build(const framework::proto::OpDesc &desc) {
-    ExtractInputsAndOutputs(desc);
-    CollectInputAndOutputArgnames(desc);
-    CollectArguments(desc);
-    desc_.reset(new framework::proto::OpDesc(desc));
-  }
+  void Build(const framework::proto::OpDesc &desc);
 
-  const framework::proto::OpDesc &desc() const {
-    CHECK(desc_) << "desc has't set";
-    return *desc_;
-  }
+  const framework::proto::OpDesc &desc() const;
   framework::proto::OpDesc *mutable_desc() { return desc_.get(); }
   const std::list<std::string> &input_names() const { return input_names_; }
   const std::list<std::string> &output_names() const { return output_names_; }
-  const std::map<std::string, std::list<std::string>> &input_argument() const {
-    return input_argument_;
-  }
-  const std::map<std::string, std::list<std::string>> &output_argument() const {
-    return output_argument_;
-  }
+  const std::map<std::string, std::list<std::string>> &input_argument() const;
+  const std::map<std::string, std::list<std::string>> &output_argument() const;
   bool GetInputArgname(const std::string &value_name, std::string *out) const;
   bool GetOutputArgname(const std::string &value_name, std::string *out) const;
 
-  const std::list<std::string> &input_argnames() const {
-    return input_argnames_;
-  }
-  const std::list<std::string> &output_argnames() const {
-    return output_argnames_;
-  }
+  const std::list<std::string> &input_argnames() const;
+  const std::list<std::string> &output_argnames() const;
 
  private:
-  void ExtractInputsAndOutputs(const framework::proto::OpDesc &opdesc) {
-    for (const auto &item : opdesc.inputs()) {
-      for (const auto &x : item.arguments()) {
-        input_names_.push_back(x);
-      }
-    }
-    for (const auto &item : opdesc.outputs()) {
-      for (const auto &x : item.arguments()) {
-        output_names_.push_back(x);
-      }
-    }
-  }
+  void ExtractInputsAndOutputs(const framework::proto::OpDesc &opdesc);
 
-  void CollectInputAndOutputArgnames(const framework::proto::OpDesc &opdesc) {
-    for (const auto &item : opdesc.inputs()) {
-      input_argnames_.push_back(item.parameter());
-    }
-    for (const auto &item : opdesc.outputs()) {
-      output_argnames_.push_back(item.parameter());
-    }
-  }
+  void CollectInputAndOutputArgnames(const framework::proto::OpDesc &opdesc);
 
-  void CollectArguments(const framework::proto::OpDesc &opdesc) {
-    for (const auto &item : opdesc.inputs()) {
-      for (auto &x : item.arguments()) {
-        input_argument_[item.parameter()].push_back(x);
-      }
-    }
-    for (const auto &item : opdesc.outputs()) {
-      for (auto &x : item.arguments()) {
-        output_argument_[item.parameter()].push_back(x);
-      }
-    }
-  }
+  void CollectArguments(const framework::proto::OpDesc &opdesc);
 
  private:
   std::list<std::string> input_names_;
diff --git a/paddle/fluid/lite/core/optimizer.h b/paddle/fluid/lite/core/optimizer.h
index 4da5331fda8644c81224c672f86b03903105e1e6..f7a4a7989c48c4bf1b32303a3fc9a499d1181db1 100644
--- a/paddle/fluid/lite/core/optimizer.h
+++ b/paddle/fluid/lite/core/optimizer.h
@@ -41,7 +41,7 @@ class Optimizer {
     graph_.reset(new mir::SSAGraph);
     graph_->Build(program, valid_places);
     SpecifyKernelPickTactic(kernel_pick_factor);
-    InitIoComplement();
+    InitTargetTypeTransformPass();
 
     if (passes.empty()) {
       RunPasses(std::vector<std::string>{{
@@ -82,7 +82,7 @@ class Optimizer {
     return program;
   }
 
-  void InitIoComplement() {
+  void InitTargetTypeTransformPass() {
     auto* pass =
         mir::PassManager::Global().LookUp<mir::TypeTargetTransformPass>(
             "type_target_transform_pass");
diff --git a/paddle/fluid/lite/core/program.h b/paddle/fluid/lite/core/program.h
index 43b2f535f1735baa92d892bf4c767db205b84619..2d6560a59be0232d9350a4fbd6b5243d9304ab4b 100644
--- a/paddle/fluid/lite/core/program.h
+++ b/paddle/fluid/lite/core/program.h
@@ -33,7 +33,7 @@ struct Program {
   std::list<std::string> tmp_vars;
   std::list<std::string> weights;
   std::list<std::shared_ptr<OpLite>> ops;
-  // the scope to run the kernels, NOTE not the root scope.
+  // the scope to run the kernels, NOTE this is the execution scope.
   std::shared_ptr<lite::Scope> scope;
   std::vector<Place> valid_places;
   // Runtime scope.
@@ -67,8 +67,6 @@ struct Program {
       // if (op_type == "feed" || op_type == "fetch") continue;
       VLOG(4) << "create Op [" << op_type << "]";
       ops.emplace_back(LiteOpRegistry::Global().Create(op_type));
-      // pick initial kernel
-      ops.back()->PickKernel(valid_places);
       ops.back()->Attach(op_desc, exec_scope);
     }
   }
diff --git a/paddle/fluid/lite/core/scope.cc b/paddle/fluid/lite/core/scope.cc
index 4a662ebf4899270966e4aeef56b6a6e0ed20cf96..053803b00a082ada50bea5f6f7a8f0f1cd787166 100644
--- a/paddle/fluid/lite/core/scope.cc
+++ b/paddle/fluid/lite/core/scope.cc
@@ -54,5 +54,13 @@ Variable *Scope::FindLocalVar(const std::string &name) const {
   return nullptr;
 }
 
+std::vector<std::string> Scope::LocalVarNames() const {
+  std::vector<std::string> keys;
+  for (const auto &item : vars_) {
+    keys.push_back(item.first);
+  }
+  return keys;
+}
+
 }  // namespace lite
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/scope.h b/paddle/fluid/lite/core/scope.h
index c67087e8a083c35864f142c431302446a5791011..57287c17e3edf85f5022534a5947ac6c46f07cb8 100644
--- a/paddle/fluid/lite/core/scope.h
+++ b/paddle/fluid/lite/core/scope.h
@@ -40,13 +40,7 @@ class Scope final {
   const Scope* parent() const { return parent_; }
 
   // Following the legacy scope interface.
-  std::vector<std::string> LocalVarNames() const {
-    std::vector<std::string> keys;
-    for (const auto& item : vars_) {
-      keys.push_back(item.first);
-    }
-    return keys;
-  }
+  std::vector<std::string> LocalVarNames() const;
 
  private:
   // Scope in `kids_` are owned by this class.
diff --git a/paddle/fluid/lite/core/tensor.cc b/paddle/fluid/lite/core/tensor.cc
index a962dab49942d92c1f2c2099a04e99b2e4b76be2..65a47ed05f77f10d4c7c036bd881667a639e80fd 100644
--- a/paddle/fluid/lite/core/tensor.cc
+++ b/paddle/fluid/lite/core/tensor.cc
@@ -41,5 +41,31 @@ std::ostream &operator<<(std::ostream &os, const Tensor &tensor) {
   return os;
 }
 
+void Tensor::ShareDataWith(const Tensor &other) {
+  buffer_ = other.buffer_;
+  dims_ = other.dims_;
+  target_ = other.target_;
+  lod_ = other.lod_;
+  memory_size_ = other.memory_size_;
+}
+
+void *Tensor::mutable_data(size_t memory_size) {
+  buffer_->ResetLazy(target_, memory_size);
+  return buffer_->data();
+}
+
+void *Tensor::mutable_data(TargetType target, size_t memory_size) {
+  target_ = target;
+  return mutable_data(memory_size);
+}
+
+void Tensor::CopyDataFrom(const Tensor &other) {
+  dims_ = other.dims_;
+  target_ = other.target_;
+  lod_ = other.lod_;
+  memory_size_ = other.memory_size_;
+  buffer_->CopyDataFrom(*other.buffer_, memory_size_);
+}
+
 }  // namespace lite
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/tensor.h b/paddle/fluid/lite/core/tensor.h
index e19948cde1263131ecf109d30dcecbde4a6814b1..2e8dc47ffc4ab0b3fb6644db015cd9926897b229 100644
--- a/paddle/fluid/lite/core/tensor.h
+++ b/paddle/fluid/lite/core/tensor.h
@@ -62,50 +62,20 @@ class Tensor {
   LoD* mutable_lod() { return &lod_; }
 
   template <typename T>
-  T* mutable_data() {
-    memory_size_ = product(dims_) * sizeof(T);
-    buffer_->ResetLazy(target_, memory_size_);
-    return static_cast<T*>(buffer_->data());
-  }
-
+  T* mutable_data();
   template <typename T>
-  T* mutable_data(TargetType target) {
-    target_ = target;
-    memory_size_ = product(dims_) * sizeof(T);
-    buffer_->ResetLazy(target, memory_size());
-    return static_cast<T*>(buffer_->data());
-  }
-
-  void* mutable_data(size_t memory_size) {
-    buffer_->ResetLazy(target_, memory_size);
-    return buffer_->data();
-  }
-
-  void* mutable_data(TargetType target, size_t memory_size) {
-    target_ = target;
-    return mutable_data(memory_size);
-  }
+  T* mutable_data(TargetType target);
+  void* mutable_data(size_t memory_size);
+  void* mutable_data(TargetType target, size_t memory_size);
 
   size_t memory_size() const { return memory_size_; }
 
   bool IsInitialized() const { return buffer_->data(); }
 
   // Other share data to this.
-  void ShareDataWith(const Tensor& other) {
-    buffer_ = other.buffer_;
-    dims_ = other.dims_;
-    target_ = other.target_;
-    lod_ = other.lod_;
-    memory_size_ = other.memory_size_;
-  }
+  void ShareDataWith(const Tensor& other);
 
-  void CopyDataFrom(const Tensor& other) {
-    dims_ = other.dims_;
-    target_ = other.target_;
-    lod_ = other.lod_;
-    memory_size_ = other.memory_size_;
-    buffer_->CopyDataFrom(*other.buffer_, memory_size_);
-  }
+  void CopyDataFrom(const Tensor& other);
 
   TargetType target() const { return target_; }
 
@@ -117,6 +87,21 @@ class Tensor {
   size_t memory_size_{};
 };
 
+template <typename T>
+T* Tensor::mutable_data() {
+  memory_size_ = product(dims_) * sizeof(T);
+  buffer_->ResetLazy(target_, memory_size_);
+  return static_cast<T*>(buffer_->data());
+}
+
+template <typename T>
+T* Tensor::mutable_data(TargetType target) {
+  target_ = target;
+  memory_size_ = product(dims_) * sizeof(T);
+  buffer_->ResetLazy(target, memory_size());
+  return static_cast<T*>(buffer_->data());
+}
+
 std::ostream& operator<<(std::ostream& os, const DDim& dims);
 std::ostream& operator<<(std::ostream& os, const Tensor& tensor);
 
diff --git a/paddle/fluid/lite/core/type_system.cc b/paddle/fluid/lite/core/type_system.cc
index a51bdb428914d7d87df9f6b85803d346f6ab7045..233e04d7bc5f0d8f2191beb77061d4e1dd1853c8 100644
--- a/paddle/fluid/lite/core/type_system.cc
+++ b/paddle/fluid/lite/core/type_system.cc
@@ -126,5 +126,14 @@ const Type* LookupType(DataTypeBase::ID type_id, bool is_unknown,
 
 // ------------------------- end GetType specification ------------------------
 
+size_t ParamTypeRegistry::KernelIdTy::hash() const {
+  std::hash<std::string> h;
+  size_t hash = h(kernel_type);
+  hash = hash_combine(hash, place.hash());
+  hash = hash_combine(hash, std::hash<int>()(static_cast<int>(io)));
+  hash = hash_combine(hash, std::hash<std::string>()(arg_name));
+  return hash;
+}
+
 }  // namespace lite
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/type_system.h b/paddle/fluid/lite/core/type_system.h
index a141f0afbbba899b54e719662c4f990e0a0477a8..f55f4a35d5db48d6b8571e07a540875738c08529 100644
--- a/paddle/fluid/lite/core/type_system.h
+++ b/paddle/fluid/lite/core/type_system.h
@@ -274,19 +274,11 @@ const Type* LookupType(DataTypeBase::ID type_id, bool is_unknown,
  * registered in the `TypeSystem`.
  */
 struct ParamType {
-  // For unsupported types.
-  size_t element_type_hash{};
   Place tensor_place{};
   const Type* type;
 
   ParamType() = default;
-  explicit ParamType(size_t element_type_hash)
-      : element_type_hash(element_type_hash) {}
-  ParamType(size_t element_type_hash, const Place& place)
-      : element_type_hash(element_type_hash), tensor_place(place) {}
-  explicit ParamType(const Type* type) : type(type) {
-    tensor_place = type->place();
-  }
+  ParamType(const Type* type) : type(type) { tensor_place = type->place(); }
 
   std::string DebugString() const { return tensor_place.DebugString(); }
 };
@@ -416,14 +408,7 @@ class ParamTypeRegistry {
     IO io;
     std::string arg_name;
 
-    size_t hash() const {
-      std::hash<std::string> h;
-      size_t hash = h(kernel_type);
-      hash = hash_combine(hash, place.hash());
-      hash = hash_combine(hash, std::hash<int>()(static_cast<int>(io)));
-      hash = hash_combine(hash, std::hash<std::string>()(arg_name));
-      return hash;
-    }
+    size_t hash() const;
     friend std::ostream& operator<<(std::ostream& os, const KernelIdTy& other);
   };
 
diff --git a/paddle/fluid/lite/core/types.cc b/paddle/fluid/lite/core/types.cc
index b94ac8c5c961b019ff5e0e0ed80fe89557cda6bb..f5398414b0d401e81e388820c0cd71260f6b44d1 100644
--- a/paddle/fluid/lite/core/types.cc
+++ b/paddle/fluid/lite/core/types.cc
@@ -47,6 +47,24 @@ bool KernelPickFactor::IsDeviceConsidered() const {
   return data_ & static_cast<int>(Factor::DeviceFirst);
 }
 
+std::ostream& operator<<(std::ostream& os, const KernelPickFactor& k) {
+  std::stack<bool> bits;
+  auto data = k.data_;
+  while (data) {
+    bits.push(data % 2);
+    data /= 2;
+  }
+  int nbits = bits.size();
+  for (size_t i = 0; i < sizeof(data) * 8 - nbits; i++) {
+    os << 0;
+  }
+  while (!bits.empty()) {
+    os << bits.top();
+    bits.pop();
+  }
+  return os;
+}
+
 }  // namespace core
 }  // namespace lite
 }  // namespace paddle
diff --git a/paddle/fluid/lite/core/types.h b/paddle/fluid/lite/core/types.h
index 4b542814cdb9f6aa0e4cf541eb90157c61497c7e..810901d15baf0fdb92b913e57dae99a7aa740461 100644
--- a/paddle/fluid/lite/core/types.h
+++ b/paddle/fluid/lite/core/types.h
@@ -49,23 +49,7 @@ class KernelPickFactor {
   bool IsDataLayoutConsidered() const;
   bool IsDeviceConsidered() const;
 
-  friend std::ostream& operator<<(std::ostream& os, const KernelPickFactor& k) {
-    std::stack<bool> bits;
-    auto data = k.data_;
-    while (data) {
-      bits.push(data % 2);
-      data /= 2;
-    }
-    int nbits = bits.size();
-    for (size_t i = 0; i < sizeof(data) * 8 - nbits; i++) {
-      os << 0;
-    }
-    while (!bits.empty()) {
-      os << bits.top();
-      bits.pop();
-    }
-    return os;
-  }
+  friend std::ostream& operator<<(std::ostream& os, const KernelPickFactor& k);
 
  private:
   unsigned char data_{};
diff --git a/paddle/fluid/lite/operators/scale_op.cc b/paddle/fluid/lite/operators/scale_op.cc
index 95dfecb9eba2f4392146a7ae8c00b1d31e328ecd..33d925bae73cd8ef07aac56975d5f6fc22d92032 100644
--- a/paddle/fluid/lite/operators/scale_op.cc
+++ b/paddle/fluid/lite/operators/scale_op.cc
@@ -56,10 +56,6 @@ class ScaleOp : public OpLite {
     param_.scale = op_desc.GetAttr("scale").get<float>();
     param_.bias = op_desc.GetAttr("bias").get<float>();
     param_.bias_after_scale = op_desc.GetAttr("bias_after_scale").get<bool>();
-
-    CHECK(kernel_);
-    kernel_->SetParam(param_);
-
     return true;
   }