Paddle Tensor Operation Library initial implementation (#34425)

* initial tensor design & sign kernel demo * add move constructor for meta & add lodtensor * add dirs & sign xpu kernel * add mean cpu&cuda kernel impl * move sign & mean xpu & npu kernel * add selected_rows basic impl * refactor design, BaseTensor to DenseTensor, etc. * add scale mkldnn kernel * polish xpu & npu impl details * fix mkldnn reuse compile failed * change tensor operation lib name * rename util filename * add more comments * change TensorImplInterface to TensorInterface * add kernel key and factory * remove MKLDNNTensorMeta, add MKLDNNDenseTensor * change XXDeviceContext to XXContext * add base kernel registrar utils & test on sign * replace boost::any by paddle::any * fix several ci failed * fix npu compile error * add ordered map util * fix multiple ordered_map compile errors * move dev into include dir * support sign op in static op run * fix static op run error * fix new executor compile failed * add dygraph branch & remove sign_op.h * fix test_infer_no_need_buffer_slots * fix rocm compile link error * fix unitybuild error & clear glog * fix npu compile failed * skip quant trans test * fix part windows compile problem * fix xpu enforce error * fix inference test failed * remove ordered_map to solve quant failed * fix part of rcom compile faild * add more register kernels * revert scale kernel temporarily * fix code format error * add new kernel registrar marco * rename top to tcmpt * revert xpu, npu, mkldnn impl & remove op def * add kernel args parse functor to auto parse args * revert some change & add scale kernels * add op proto in dygraph kernelcontext building * polish kernel dispatch logic & nameing rule * fix scale kernel match error * fix scale test failed * add mean API and unittest * test mean api success * add branch to solve compiled error * skip clang format error * add mean skip rule in op_library * add dot kernel, api and unittest (#6) * remove old kernel and add symbol link * fix dot compiled failed * add merco for module declare * fix npu and xpu compile error * revert sign, mean, scale, dot kernel removing * add comment for keeping old kernel impl * fix mutable_data error * fix bfloat16 conflit * fix inference undef error * adapt to msvc compile rules * polish comment for template inst * add cmake template instantiation for win * fix backend to place device id bug * fix ifdef error * Op2functor (#7) * add kernel args maker class * make args maker non-const * remove debug log * modify codes by review options * split constructPrKernelContext function * fix output name bug * fix test_mean_op test_sign_op failed * fill_any_like kernel refactor (#10) * fill_any_like kernel refactor * remove useless code of full_like c++ api * skip dtype for fill_any_like * add attrs for kernel key constrcut * add use_pt_kernel Flags to control whether to use pt kernel (#13) * add use_pt_kernel Flags to control whether to use pt kernel * change the default value to true for cheking pt kernels * fix mutable_data cuda place error * move high level apis into hapi * remove selectedrows adapting temporarily * Support Scalar in Tensor Compute Library (#14) * fill_any_like kernel refactor * remove useless code of full_like c++ api * Support Scalar in Tensor Compute Library * add scalar in dygraph and static graph mode * keep the basic type for attr, instead of using scalar for all * merge the code * remove mkldnn tensor & polish details * use flat_hash_map and small_vector in kernel factory * Refactor flatten kernel (#12) * refactor flatten kernel * update infershape function * fix compile bugs * fix bugs when merge * fix compiler bugs * fix bugs when run test_flatten_api * fix bugs when run test * Revert "use flat_hash_map and small_vector in kernel factory" This reverts commit 2309149. * Move cpu, cuda and other device code into kernels (#15) * fill_any_like kernel refactor * remove useless code of full_like c++ api * Support Scalar in Tensor Compute Library * add scalar in dygraph and static graph mode * keep the basic type for attr, instead of using scalar for all * merge the code * start refactor matmul * move cpu, cuda and other device modules into kernels * merge code * polish code in operator.cc * Perfect unitests (#16) * perfect unittest * update license * replace with flat_hash_map, small_vector (#19) * fix small_vector build error on windows platform * replace with flat_hash_map, small_vector * remove todo * Perfect unitests (#20) * perfect unittest * update license * fix bug when run tcmpt_utils_test * refactor execution adapting impl * fix insert conflit * Fix CI bug of test_yolov3 (#21) * fill_any_like kernel refactor * remove useless code of full_like c++ api * Support Scalar in Tensor Compute Library * add scalar in dygraph and static graph mode * keep the basic type for attr, instead of using scalar for all * merge the code * start refactor matmul * move cpu, cuda and other device modules into kernels * merge code * polish code in operator.cc * Fix CI bug of test_yolov3 * add the tensor base class, test=develop (#17) * update the tensor base class, test=develop * remove two funcs, test=develop * update the error msg, test=develop Co-authored-by: Chen Weihang <chenweihang@baidu.com> * [no-verify] commit backend and tensor signature changes * Rename tcmpt to pten (#23) * rename tcmpt to pten * update omitted files for rename to pten * update omitted file for rename to pten * remove k of all enum var * remove kernel_instantiate (#26) * remove symbols and spatial_tensor * change common to functions * readd share tensor impl methods * add a candidate dense tensor class, test=develop (#28) * change all Pt to Pten * resolve conflit with xiaowei * Op2functor opt1 (#27) * replace to small vector and change to const & * add std::move Co-authored-by: Chen Weihang <chenweihang@baidu.com> * polish kernel factory and kernel registry * fix operator test error msg mismatch * remove tensor signature and backend set member * move scalar and polish enforce * revert dtype layout change to fix error * fix enum operator override error * add several base unittests * add pten utils tests * polish some details * Dev/op2func refactor 3 (#30) * add a candidate dense tensor class, test=develop * remove TensorBase::backend(), test=develop * remove some ops, test=develop * cherry-pick the pr of tensor meta, test=develop * moves the dense tensor and some ops, test=develop * update the linalg operator, test=develop * update other operators, test=develop * fix errors, test=develop * fix bugs, test=develop * try to resolve the problem of windows ci, test=develop * updates codes, test=develop * fix the tensor_utils.cc, test=develop * modify the dense tensor, test=develop * fix the data type, test=develop Co-authored-by: shixiaowei02 <39303645+Shixiaowei02@users.noreply.github.com> * polish some details * polish kernel signature details * fix a bug about offsets of the tensor, test=develop (#31) Co-authored-by: shixiaowei02 <39303645+Shixiaowei02@users.noreply.github.com> * polish some details Co-authored-by: chentianyu03 <ctychentianyu@gmail.com> Co-authored-by: zyfncg <1370305206@qq.com> Co-authored-by: YuanRisheng <yuanrisheng@baidu.com> Co-authored-by: 石晓伟 <39303645+Shixiaowei02@users.noreply.github.com>
PaddlePaddle · Nov 1, 2021 · b9fdd3b · b9fdd3b
1 parent 3c0a68c
commit b9fdd3b
Show file tree

Hide file tree

Showing 147 changed files with 8,516 additions and 195 deletions.
diff --git a/cmake/generic.cmake b/cmake/generic.cmake
@@ -116,6 +116,20 @@ function(find_fluid_modules TARGET_NAME)
   endif()
 endfunction(find_fluid_modules)
 
+set_property(GLOBAL PROPERTY PTEN_MODULES "")
+# find all pten modules is used for paddle static library
+# for building inference libs
+function(find_pten_modules TARGET_NAME)
+  get_filename_component(__target_path ${TARGET_NAME} ABSOLUTE)
+  string(REGEX REPLACE "^${PADDLE_SOURCE_DIR}/" "" __target_path ${__target_path})
+  string(FIND "${__target_path}" "pten" pos)
+  if(pos GREATER 1)
+    get_property(pten_modules GLOBAL PROPERTY PTEN_MODULES)
+    set(pten_modules ${pten_modules} ${TARGET_NAME})
+    set_property(GLOBAL PROPERTY PTEN_MODULES "${pten_modules}")
+  endif()
+endfunction(find_pten_modules)
+
 function(common_link TARGET_NAME)
   if (WITH_PROFILER)
     target_link_libraries(${TARGET_NAME} gperftools::profiler)
@@ -310,6 +324,7 @@ function(cc_library TARGET_NAME)
       else()
         add_library(${TARGET_NAME} STATIC ${cc_library_SRCS})
         find_fluid_modules(${TARGET_NAME})
+        find_pten_modules(${TARGET_NAME})
       endif()
     if(cc_library_DEPS)
       # Don't need link libwarpctc.so
@@ -482,6 +497,7 @@ function(nv_library TARGET_NAME)
       else()
         add_library(${TARGET_NAME} STATIC ${nv_library_SRCS})
         find_fluid_modules(${TARGET_NAME})
+        find_pten_modules(${TARGET_NAME})
       endif()
       if (nv_library_DEPS)
         add_dependencies(${TARGET_NAME} ${nv_library_DEPS})
@@ -572,6 +588,7 @@ function(hip_library TARGET_NAME)
       else()
         hip_add_library(${TARGET_NAME} STATIC ${hip_library_SRCS})
         find_fluid_modules(${TARGET_NAME})
+        find_pten_modules(${TARGET_NAME})
       endif()
       if (hip_library_DEPS)
         add_dependencies(${TARGET_NAME} ${hip_library_DEPS})

diff --git a/paddle/CMakeLists.txt b/paddle/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_subdirectory(scripts)
 add_subdirectory(testing)
 set(PYTHON_TESTS_DIR ${PADDLE_BINARY_DIR}/python/paddle/fluid/tests CACHE INTERNAL "python tests directory")
+add_subdirectory(pten)
 add_subdirectory(fluid)
diff --git a/paddle/fluid/framework/CMakeLists.txt b/paddle/fluid/framework/CMakeLists.txt
@@ -197,10 +197,12 @@ cc_library(unused_var_check SRCS unused_var_check.cc DEPS glog no_need_buffer_va
 
 IF(WITH_XPU)
 cc_library(operator SRCS operator.cc DEPS xpu_op_list op_info device_context tensor scope glog trainer_desc_proto data_feed_proto
-    shape_inference data_transform lod_tensor profiler transfer_scope_cache op_kernel_type op_call_stack unused_var_check nan_inf_utils)
+    shape_inference data_transform lod_tensor profiler transfer_scope_cache op_kernel_type op_call_stack unused_var_check nan_inf_utils
+    pten pten_utils kernel_factory)
 ELSE()
 cc_library(operator SRCS operator.cc DEPS op_info device_context tensor scope glog trainer_desc_proto data_feed_proto
-    shape_inference data_transform lod_tensor profiler transfer_scope_cache op_kernel_type op_call_stack unused_var_check nan_inf_utils)
+    shape_inference data_transform lod_tensor profiler transfer_scope_cache op_kernel_type op_call_stack unused_var_check nan_inf_utils
+    pten pten_utils kernel_factory)
 ENDIF()
 
 cc_test(operator_test SRCS operator_test.cc DEPS operator op_registry device_context)
@@ -394,6 +396,8 @@ cc_library(save_load_util SRCS save_load_util.cc DEPS tensor scope layer)
 cc_test(save_load_util_test SRCS save_load_util_test.cc DEPS save_load_util tensor scope layer)
 cc_library(generator SRCS generator.cc DEPS enforce place)
 
+cc_library(pten_utils SRCS pten_utils.cc DEPS lod_tensor selected_rows place pten var_type_traits pten_hapi_utils)
+
 # Get the current working branch
 execute_process(
   COMMAND git rev-parse --abbrev-ref HEAD
@@ -456,3 +460,4 @@ if(WITH_TESTING AND TEST selected_rows_test)
 endif()
 
 cc_test(scope_guard_test SRCS scope_guard_test.cc)
+cc_test(pten_utils_test SRCS pten_utils_test.cc DEPS pten_utils)
diff --git a/paddle/fluid/framework/operator.cc b/paddle/fluid/framework/operator.cc
@@ -29,6 +29,7 @@ limitations under the License. */
 #include "paddle/fluid/framework/var_type.h"
 #include "paddle/fluid/platform/enforce.h"
 #include "paddle/fluid/platform/profiler.h"
+#include "paddle/pten/common/scalar.h"
 
 namespace paddle {
 namespace framework {
@@ -49,6 +50,7 @@ DECLARE_bool(check_nan_inf);
 DECLARE_bool(enable_unused_var_check);
 PADDLE_DEFINE_EXPORTED_int32(inner_op_parallelism, 0,
                              "number of threads for inner op");
+DECLARE_bool(run_pten_kernel);
 
 namespace paddle {
 namespace framework {
@@ -1120,8 +1122,24 @@ void OperatorWithKernel::RunImpl(const Scope& scope,
   }
 #endif
 
-  if (kernel_type_.get() == nullptr || kernel_func_.get() == nullptr) {
-    ChooseKernel(*runtime_ctx, scope, place);
+  auto exe_ctx = ExecutionContext(*this, scope, *dev_ctx, *runtime_ctx);
+
+  // TODO(chenweihang): Now we are still reusing a lot of the original fluid
+  // implementation, this is a gradual replacement process
+  // TODO(chenweihang): in the first phase of project, we only support CPU, CUDA
+  // and RCOM backend, the XPU, NPU and MKLDNN will be supported in the second
+  // phase
+  if (FLAGS_run_pten_kernel &&
+      pten::KernelFactory::Instance().HasCompatiblePtenKernel(type_)) {
+    if (pt_kernel_signature_.get() == nullptr || pt_kernel_.get() == nullptr) {
+      ChoosePtenKernel(exe_ctx);
+    }
+    run_pten_kernel_ = pt_kernel_->IsValid();
+  }
+  if (!run_pten_kernel_) {
+    if (kernel_type_.get() == nullptr || kernel_func_.get() == nullptr) {
+      ChooseKernel(exe_ctx);
+    }
   }
 
   // do data transformScope &transfer_scope;
@@ -1159,8 +1177,13 @@ void OperatorWithKernel::RunImpl(const Scope& scope,
   {
     platform::RecordEvent record_event("compute",
                                        platform::EventRole::kInnerOp);
-    (*kernel_func_)(
-        ExecutionContext(*this, exec_scope, *dev_ctx, *runtime_ctx));
+    if (run_pten_kernel_) {
+      auto op_kernel_ctx = BuildPtenKernelContext(*runtime_ctx, *dev_ctx);
+      (*pt_kernel_)(&op_kernel_ctx);
+    } else {
+      (*kernel_func_)(
+          ExecutionContext(*this, exec_scope, *dev_ctx, *runtime_ctx));
+    }
   }
 
   if (!transfered_inplace_vars.empty()) {
@@ -1208,25 +1231,11 @@ void OperatorWithKernel::RunImpl(const Scope& scope,
   }
 }
 
-void OperatorWithKernel::ChooseKernel(const RuntimeContext& ctx,
-                                      const Scope& scope,
-                                      const platform::Place& place) const {
-  platform::DeviceContextPool& pool = platform::DeviceContextPool::Instance();
-  auto* dev_ctx = pool.Get(place);
-
-  // check if op[type] has kernel registered.
-  auto& all_op_kernels = AllOpKernels();
-  auto kernels_iter = all_op_kernels.find(type_);
-  PADDLE_ENFORCE_NE(
-      kernels_iter, all_op_kernels.end(),
-      platform::errors::Unavailable(
-          "There are no kernels which are registered in the %s operator.",
-          type_));
-
-  OpKernelMap& kernels = kernels_iter->second;
+OpKernelType OperatorWithKernel::InnerGetExpectedKernelType(
+    const ExecutionContext& ctx) const {
+  auto& dev_ctx = ctx.device_context();
 
-  auto expected_kernel_key = this->GetExpectedKernelType(
-      ExecutionContext(*this, scope, *dev_ctx, ctx));
+  auto expected_kernel_key = this->GetExpectedKernelType(ctx);
   if (HasAttr("op_device")) {
     if (Attr<std::string>("op_device") == "cpu") {
       expected_kernel_key.place_ = platform::CPUPlace();
@@ -1243,9 +1252,9 @@ void OperatorWithKernel::ChooseKernel(const RuntimeContext& ctx,
       // when the Op that only has CPUKernel is assigned to GPU, the CPUKernel
       // will be executed and a warning will be given at the same time.
       if (SupportGPU()) {
-        expected_kernel_key.place_ = dev_ctx->GetPlace();
+        expected_kernel_key.place_ = dev_ctx.GetPlace();
       } else if (SupportNPU()) {
-        expected_kernel_key.place_ = dev_ctx->GetPlace();
+        expected_kernel_key.place_ = dev_ctx.GetPlace();
       } else {
         expected_kernel_key.place_ = platform::CPUPlace();
         LOG_FIRST_N(WARNING, 1)
@@ -1256,6 +1265,47 @@ void OperatorWithKernel::ChooseKernel(const RuntimeContext& ctx,
   }
   VLOG(3) << "op type:" << type_
           << ", expected_kernel_key:" << expected_kernel_key;
+  return expected_kernel_key;
+}
+
+void OperatorWithKernel::ChoosePtenKernel(const ExecutionContext& ctx) const {
+  pt_kernel_signature_.reset(
+      new KernelSignature(std::move(this->GetExpectedPtenKernelArgs(ctx))));
+
+  VLOG(1) << KernelSignatureToString(*pt_kernel_signature_.get());
+
+  kernel_type_.reset(
+      new OpKernelType(std::move(InnerGetExpectedKernelType(ctx))));
+
+  auto pt_kernel_name = pten::KernelName(pt_kernel_signature_->name);
+  auto pt_kernel_key = TransOpKernelTypeToPtenKernelKey(*kernel_type_.get());
+  pt_kernel_.reset(
+      new pten::Kernel(pten::KernelFactory::Instance().SelectKernel(
+          pt_kernel_name, pt_kernel_key)));
+
+  if (pt_kernel_->IsValid()) {
+    VLOG(1) << "Static mode ChoosePtenKernel - kernel name: " << pt_kernel_name
+            << " | kernel key: " << pt_kernel_key
+            << " | kernel: " << *pt_kernel_;
+  } else {
+    VLOG(1) << "Static mode ChoosePtenKernel - kernel `" << pt_kernel_name
+            << "` not found.";
+  }
+}
+
+void OperatorWithKernel::ChooseKernel(const ExecutionContext& ctx) const {
+  // check if op[type] has kernel registered.
+  auto& all_op_kernels = AllOpKernels();
+  auto kernels_iter = all_op_kernels.find(type_);
+  PADDLE_ENFORCE_NE(
+      kernels_iter, all_op_kernels.end(),
+      platform::errors::Unavailable(
+          "There are no kernels which are registered in the %s operator.",
+          type_));
+
+  OpKernelMap& kernels = kernels_iter->second;
+
+  auto expected_kernel_key = InnerGetExpectedKernelType(ctx);
 
   auto kernel_iter = kernels.find(expected_kernel_key);
 #ifdef PADDLE_WITH_MKLDNN
@@ -1562,11 +1612,10 @@ Scope* OperatorWithKernel::PrepareData(
 }
 
 void OperatorWithKernel::ParseInputDataType(
-    const ExecutionContext& ctx, const std::string& name,
+    const std::vector<Variable*>& vars, const std::string& name,
     proto::VarType::Type* data_type) const {
   proto::VarType::Type default_data_type =
       static_cast<proto::VarType::Type>(-1);
-  const std::vector<Variable*> vars = ctx.MultiInputVar(name);
   for (size_t i = 0; i < vars.size(); ++i) {
     const Variable* var = vars[i];
     if (var != nullptr) {
@@ -1588,10 +1637,9 @@ void OperatorWithKernel::ParseInputDataType(
       if (t != nullptr) {
         PADDLE_ENFORCE_EQ(
             t->IsInitialized(), true,
-            platform::errors::InvalidArgument(
-                "The Tensor in the %s Op's Input Variable %s(%s) is "
-                "not initialized.",
-                Type(), name, ctx.InputNames(name).at(i)));
+            platform::errors::InvalidArgument("The %s Op's Input Variable `%s` "
+                                              "contains uninitialized Tensor.",
+                                              Type(), name));
         proto::VarType::Type tmp = t->type();
         PADDLE_ENFORCE(tmp == *data_type || *data_type == default_data_type,
                        platform::errors::InvalidArgument(
@@ -1614,7 +1662,8 @@ proto::VarType::Type OperatorWithKernel::IndicateDataType(
       static_cast<proto::VarType::Type>(-1);
   proto::VarType::Type data_type = dafault_data_type;
   for (auto& input : ctx.InNameList()) {
-    ParseInputDataType(ctx, input, &data_type);
+    const std::vector<Variable*> vars = ctx.MultiInputVar(input);
+    ParseInputDataType(vars, input, &data_type);
   }
   PADDLE_ENFORCE_NE(
       data_type, dafault_data_type,
@@ -1628,7 +1677,7 @@ proto::VarType::Type OperatorWithKernel::IndicateVarDataType(
   proto::VarType::Type dafault_data_type =
       static_cast<proto::VarType::Type>(-1);
   proto::VarType::Type data_type = dafault_data_type;
-  ParseInputDataType(ctx, name, &data_type);
+  ParseInputDataType(ctx.MultiInputVar(name), name, &data_type);
   PADDLE_ENFORCE_NE(
       data_type, dafault_data_type,
       platform::errors::InvalidArgument(
@@ -1711,5 +1760,115 @@ OpKernelType OperatorWithKernel::GetKernelTypeForVar(
                       tensor.layout());
 }
 
+KernelSignature OperatorWithKernel::GetExpectedPtenKernelArgs(
+    const ExecutionContext& ctx) const {
+  if (!KernelSignatureMap::Instance().Has(Type())) {
+    // TODO(chenweihang): we can generate this map by proto info in compile time
+    KernelArgsNameMakerByOpProto maker(Info().proto_);
+    KernelSignatureMap::Instance().Emplace(
+        Type(), std::move(maker.GetKernelSignature()));
+  }
+  return KernelSignatureMap::Instance().Get(Type());
+}
+
+pten::KernelContext OperatorWithKernel::BuildPtenKernelContext(
+    const RuntimeContext& ctx, const platform::DeviceContext& dev_ctx) const {
+  // TODO(chenweihang): now only work for very simple case,
+  // many cases need to be deal with later:
+  // 1. the input and output are not tensor
+  // 2. the dispensbale, duplicable input and output
+  // 3. needless attributes remove
+  // 4. use pt Tensor directly
+  // 5. kernel input is not DenseTensor
+  pten::KernelContext op_kernel_ctx(dev_ctx);
+
+  auto& input_names = std::get<0>(pt_kernel_signature_->args);
+  auto& attr_names = std::get<1>(pt_kernel_signature_->args);
+  auto& output_names = std::get<2>(pt_kernel_signature_->args);
+
+  auto input_defs = pt_kernel_->args_def().input_defs();
+  auto attr_defs = pt_kernel_->args_def().attribute_defs();
+  auto output_defs = pt_kernel_->args_def().output_defs();
+
+  PADDLE_ENFORCE_EQ(input_names.size(), input_defs.size(),
+                    platform::errors::InvalidArgument(
+                        "The size of inputs_args names (%d) must be equal to "
+                        "the size of kernel input_defs (%d).",
+                        input_names.size(), input_defs.size()));
+
+  PADDLE_ENFORCE_EQ(output_names.size(), output_defs.size(),
+                    platform::errors::InvalidArgument(
+                        "The size of outputs_args names (%d) must be equal to "
+                        "the size of kernel output_defs (%d).",
+                        output_names.size(), output_defs.size()));
+
+  PADDLE_ENFORCE_EQ(attr_names.size(), attr_defs.size(),
+                    platform::errors::InvalidArgument(
+                        "The size of attribute_args names (%d) must be equal "
+                        "to the size of kernel attribute_defs (%d).",
+                        attr_names.size(), attr_defs.size()));
+
+  for (size_t i = 0; i < input_names.size(); ++i) {
+    auto in_def = input_defs.at(i);
+    VLOG(2) << "in_def: " << in_def.backend << ", " << in_def.dtype << ", "
+            << in_def.layout;
+
+    auto ins_vector = ctx.inputs.at(input_names[i]);
+
+    paddle::SmallVector<std::shared_ptr<pten::TensorBase>> tmp_inputs;
+    for (auto var : ins_vector) {
+      tmp_inputs.emplace_back(
+          experimental::MakePtenTensorBaseFromVar(*var, in_def));
+    }
+    op_kernel_ctx.EmplaceBackInputs(std::move(tmp_inputs));
+  }
+
+  for (size_t i = 0; i < output_names.size(); ++i) {
+    auto out_def = output_defs.at(i);
+    auto outs_vector = ctx.outputs.at(output_names[i]);
+
+    paddle::SmallVector<std::shared_ptr<pten::TensorBase>> tmp_outputs;
+    for (auto var : outs_vector) {
+      tmp_outputs.emplace_back(
+          experimental::MakePtenTensorBaseFromVar(var, out_def));
+    }
+    op_kernel_ctx.EmplaceBackOutputs(std::move(tmp_outputs));
+  }
+
+  for (size_t i = 0; i < attr_names.size(); ++i) {
+    auto& attr = Attrs().at(attr_names[i]);
+    if (attr_defs[i].type_index == std::type_index(typeid(pten::Scalar))) {
+      // TODO(chenweihang): support other attrs later
+      // TODO(zhangyunfei): Scalar should hold scaler type, and we should check
+      // attribtue type by attr_defs
+      if (std::type_index(attr.type()) == std::type_index(typeid(float))) {
+        op_kernel_ctx.EmplaceBackAttr(
+            std::move(pten::Scalar(BOOST_GET_CONST(float, attr))));
+      } else {
+        PADDLE_THROW(platform::errors::Unimplemented(
+            "unsupported cast op attribute `%s` to Scalar when construct "
+            "KernelContext.",
+            attr_names[i]));
+      }
+    } else {
+      // TODO(chenweihang): support other attrs later
+      if (attr_defs[i].type_index == std::type_index(typeid(int))) {
+        op_kernel_ctx.EmplaceBackAttr(BOOST_GET_CONST(int, attr));
+      } else if (attr_defs[i].type_index == std::type_index(typeid(float))) {
+        op_kernel_ctx.EmplaceBackAttr(BOOST_GET_CONST(float, attr));
+      } else if (attr_defs[i].type_index == std::type_index(typeid(bool))) {
+        op_kernel_ctx.EmplaceBackAttr(BOOST_GET_CONST(bool, attr));
+      } else {
+        PADDLE_THROW(platform::errors::Unimplemented(
+            "unsupported cast op attribute `%s` when construct "
+            "KernelContext.",
+            attr_names[i]));
+      }
+    }
+  }
+
+  return op_kernel_ctx;
+}
+
 }  // namespace framework
 }  // namespace paddle