[fleet executor] add a tensor wrapper to support python numpy input

paddle/fluid/distributed/fleet_executor/CMakeLists.txt

@@ -12,8 +12,8 @@ endif()
 
 cc_library(task_loop_thread_pool SRCS task_loop_thread_pool.cc task_loop_thread.cc task_loop.cc DEPS enforce glog)
 
-cc_library(fleet_executor SRCS fleet_executor.cc carrier.cc task_node.cc runtime_graph.cc dist_model.cc
-        interceptor.cc compute_interceptor.cc amplifier_interceptor.cc message_service.cc message_bus.cc
+cc_library(fleet_executor SRCS fleet_executor.cc carrier.cc task_node.cc runtime_graph.cc dist_model.cc interceptor.cc
+        compute_interceptor.cc amplifier_interceptor.cc message_service.cc message_bus.cc dist_model_tensor_wrapper.cc
         DEPS proto_desc fleet_executor_desc_proto interceptor_message_proto task_loop_thread_pool collective_helper
         op_registry executor_gc_helper gflags glog ${BRPC_DEPS})
 

paddle/fluid/distributed/fleet_executor/dist_model.cc

@@ -355,8 +355,8 @@ bool DistModel::PrepareFeedAndFetch() {
   return true;
 }
 
-void DistModel::Run(const std::vector<paddle::framework::Tensor> &input_data,
-                    std::vector<paddle::framework::Tensor> *output_data) {
+void DistModel::Run(const std::vector<DistModelTensor> &input_data,
+                    std::vector<DistModelTensor> *output_data) {
   /* TODO(fleet exe dev): implement this funct */
 }
 

paddle/fluid/distributed/fleet_executor/dist_model.h

@@ -17,6 +17,7 @@
 #include <string>
 #include <vector>
 
+#include "paddle/fluid/distributed/fleet_executor/dist_model_tensor_wrapper.h"
 #include "paddle/fluid/distributed/fleet_executor/fleet_executor_desc.pb.h"
 #include "paddle/fluid/framework/tensor.h"
 #include "paddle/fluid/platform/macros.h"
@@ -56,8 +57,8 @@ class DistModel {
  public:
   explicit DistModel(const DistModelConfig& config) : config_(config) {}
   bool Init();
-  void Run(const std::vector<paddle::framework::Tensor>& input_data,
-           std::vector<paddle::framework::Tensor>* output_data);
+  void Run(const std::vector<DistModelTensor>& input_data,
+           std::vector<DistModelTensor>* output_data);
   ~DistModel() = default;
 
  private:

paddle/fluid/distributed/fleet_executor/dist_model_tensor_wrapper.cc

@@ -0,0 +1,100 @@
+// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "paddle/fluid/distributed/fleet_executor/dist_model_tensor_wrapper.h"
+#include "paddle/fluid/platform/enforce.h"
+
+namespace paddle {
+namespace distributed {
+
+void DistModelDataBuf::Reset(void* data, size_t length) {
+  Free();
+  memory_owned_ = false;
+  data_ = data;
+  length_ = length;
+}
+
+void DistModelDataBuf::Free() {
+  if (memory_owned_ && data_) {
+    PADDLE_ENFORCE_GT(length_, 0UL,
+                      platform::errors::PreconditionNotMet(
+                          "Error occurred when deconstruct DistModelDataBuf: "
+                          "it contains no data!"));
+    // NOTE: if own the memory, it must be char* type
+    delete[] static_cast<char*>(data_);
+    data_ = nullptr;
+    length_ = 0;
+  }
+}
+
+void DistModelDataBuf::Resize(size_t length) {
+  if (length_ >= length) {
+    return;
+  }
+  if (memory_owned_) {
+    Free();
+    data_ = new char[length];
+    length_ = length;
+    memory_owned_ = true;
+  } else {
+    PADDLE_THROW(platform::errors::PreconditionNotMet(
+        "The memory is allocated externally, can not Resized"));
+  }
+}
+
+DistModelDataBuf& DistModelDataBuf::operator=(const DistModelDataBuf& other) {
+  if (!other.memory_owned_) {
+    data_ = other.data_;
+    length_ = other.length_;
+    memory_owned_ = other.memory_owned_;
+  } else {
+    Resize(other.length_);
+    if (other.length() && other.data()) {
+      std::memcpy(data_, other.data(), other.length());
+    } else if (other.length()) {
+      PADDLE_THROW(platform::errors::InvalidArgument(
+          "Invalid argument, null pointer data with length %u is passed",
+          other.length()));
+    }
+    length_ = other.length_;
+    memory_owned_ = true;
+  }
+  return *this;
+}
+
+DistModelDataBuf& DistModelDataBuf::operator=(DistModelDataBuf&& other) {
+  data_ = other.data_;
+  memory_owned_ = other.memory_owned_;
+  length_ = other.length_;
+  other.data_ = nullptr;
+  other.length_ = 0;
+  other.memory_owned_ = false;
+  return *this;
+}
+
+DistModelDataBuf::DistModelDataBuf(DistModelDataBuf&& other)
+    : data_(other.data_),
+      length_(other.length_),
+      memory_owned_(other.memory_owned_) {
+  other.memory_owned_ = false;
+  other.data_ = nullptr;
+  other.length_ = 0;
+}
+
+DistModelDataBuf::DistModelDataBuf(const DistModelDataBuf& other) {
+  *this = other;
+}
+
+}  // namespace distributed
+}  // namespace paddle

paddle/fluid/distributed/fleet_executor/dist_model_tensor_wrapper.h

@@ -0,0 +1,77 @@
+// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+#include <string>
+#include <vector>
+#include "paddle/fluid/platform/macros.h"
+
+namespace paddle {
+namespace distributed {
+
+enum DistModelDataType { FLOAT16, FLOAT32, INT64, INT32, INT8 };
+
+template <typename T>
+constexpr DistModelDataType DistModelGetDtype();
+
+template <>
+constexpr DistModelDataType DistModelGetDtype<int32_t>() {
+  return DistModelDataType::INT32;
+}
+
+template <>
+constexpr DistModelDataType DistModelGetDtype<int64_t>() {
+  return DistModelDataType::INT64;
+}
+
+template <>
+constexpr DistModelDataType DistModelGetDtype<float>() {
+  return DistModelDataType::FLOAT32;
+}
+
+class DistModelDataBuf {
+ public:
+  explicit DistModelDataBuf(size_t length)
+      : data_(new char[length]), length_(length), memory_owned_(true) {}
+  DistModelDataBuf(void* data, size_t length)
+      : data_(data), length_(length), memory_owned_(false) {}
+  void Reset(void* data, size_t length);
+  size_t length() const { return length_; }
+  void* data() const { return data_; }
+  ~DistModelDataBuf() { Free(); }
+  DistModelDataBuf() = default;
+  void Resize(size_t length);
+
+  DistModelDataBuf& operator=(const DistModelDataBuf& other);
+  DistModelDataBuf& operator=(DistModelDataBuf&& other);
+  DistModelDataBuf(DistModelDataBuf&& other);
+  DistModelDataBuf(const DistModelDataBuf& other);
+
+ private:
+  void Free();
+  void* data_{nullptr};
+  size_t length_{0};
+  bool memory_owned_{false};
+};
+
+struct DistModelTensor {
+  std::string name;
+  std::vector<int> shape;
+  DistModelDataBuf data;
+  DistModelDataType dtype;
+  std::vector<std::vector<size_t>> lod;
+};
+
+}  // namespace distributed
+}  // namespace paddle

paddle/fluid/pybind/bind_fleet_executor.cc

@@ -13,8 +13,12 @@
 // limitations under the License.
 
 #include "paddle/fluid/pybind/bind_fleet_executor.h"
+#include <pybind11/numpy.h>
 #include <pybind11/stl.h>
+#include <string>
+#include <vector>
 #include "paddle/fluid/distributed/fleet_executor/dist_model.h"
+#include "paddle/fluid/distributed/fleet_executor/dist_model_tensor_wrapper.h"
 #include "paddle/fluid/distributed/fleet_executor/fleet_executor.h"
 #include "paddle/fluid/distributed/fleet_executor/task_node.h"
 #include "paddle/fluid/framework/operator.h"
@@ -31,9 +35,90 @@ using paddle::distributed::FleetExecutor;
 using paddle::distributed::TaskNode;
 using paddle::distributed::DistModelConfig;
 using paddle::distributed::DistModel;
+using paddle::distributed::DistModelDataBuf;
+using paddle::distributed::DistModelTensor;
+using paddle::distributed::DistModelDataType;
 using paddle::framework::OpDesc;
 using paddle::framework::ProgramDesc;
 
+template <typename T>
+DistModelDataBuf DistModelDataBufCreate(
+    py::array_t<T, py::array::c_style | py::array::forcecast> data) {
+  // accept numpy array directly
+  DistModelDataBuf buf(data.size() * sizeof(T));
+  std::copy_n(static_cast<const T*>(data.data()), data.size(),
+              static_cast<T*>(buf.data()));
+  return buf;
+}
+
+template <typename T>
+void DistModelDataBufReset(
+    DistModelDataBuf& buf,                                             // NOLINT
+    py::array_t<T, py::array::c_style | py::array::forcecast> data) {  // NOLINT
+  // reset the data with numpy array directly
+  buf.Resize(data.size() * sizeof(T));
+  std::copy_n(static_cast<const T*>(data.data()), data.size(),
+              static_cast<T*>(buf.data()));
+}
+
+template <typename T>
+DistModelTensor DistModelTensorCreate(
+    py::array_t<T, py::array::c_style | py::array::forcecast> data,
+    const std::string name, const std::vector<std::vector<size_t>>& lod,
+    bool copy) {
+  DistModelTensor tensor;
+
+  if (copy) {
+    DistModelDataBuf buf(data.size() * sizeof(T));
+    std::copy_n(static_cast<const T*>(data.data()), data.size(),
+                static_cast<T*>(buf.data()));
+    tensor.data = std::move(buf);
+  } else {
+    tensor.data =
+        DistModelDataBuf(data.mutable_data(), data.size() * sizeof(T));
+  }
+
+  tensor.dtype = paddle::distributed::DistModelGetDtype<T>();
+  tensor.name = name;
+  tensor.lod = lod;
+  tensor.shape.resize(data.ndim());
+  std::copy_n(data.shape(), data.ndim(), tensor.shape.begin());
+
+  return tensor;
+}
+
+py::dtype DistModelTypeToNumpyDType(DistModelDataType dtype) {
+  py::dtype dt;
+  switch (dtype) {
+    case DistModelDataType::INT32:
+      dt = py::dtype::of<int32_t>();
+      break;
+    case DistModelDataType::INT64:
+      dt = py::dtype::of<int64_t>();
+      break;
+    case DistModelDataType::FLOAT32:
+      dt = py::dtype::of<float>();
+      break;
+    case DistModelDataType::INT8:
+      dt = py::dtype::of<int8_t>();
+      break;
+    case DistModelDataType::FLOAT16:
+      dt = py::dtype::of<paddle::platform::float16>();
+      break;
+    default:
+      PADDLE_THROW(platform::errors::Unimplemented(
+          "Unsupported data type. Now only supports INT32, INT64, INT8, "
+          "FLOAT16 and FLOAT32."));
+  }
+
+  return dt;
+}
+
+py::array DistModelTensorGetData(DistModelTensor& tensor) {  // NOLINT
+  py::dtype dt = DistModelTypeToNumpyDType(tensor.dtype);
+  return py::array(std::move(dt), {tensor.shape}, tensor.data.data());
+}
+
 void BindFleetExecutor(py::module* m) {
   py::class_<FleetExecutor>(*m, "FleetExecutor")
       .def(py::init<const std::string&>())
@@ -78,6 +163,74 @@ void BindFleetExecutor(py::module* m) {
       .def(py::init<const DistModelConfig&>())
       .def("init", &DistModel::Init)
       .def("run", &DistModel::Run, py::call_guard<py::gil_scoped_release>());
+
+  py::class_<DistModelDataBuf>(*m, "DistModelDataBuf")
+      .def(py::init<size_t>())
+      .def(py::init([](std::vector<float>& data) {
+        auto buf = DistModelDataBuf(data.size() * sizeof(float));
+        std::memcpy(buf.data(), static_cast<void*>(data.data()), buf.length());
+        return buf;
+      }))
+      .def(py::init(&DistModelDataBufCreate<int32_t>))
+      .def(py::init(&DistModelDataBufCreate<int64_t>))
+      .def(py::init(&DistModelDataBufCreate<float>))
+      .def("reset",
+           [](DistModelDataBuf& self, std::vector<float>& data) {
+             self.Resize(data.size() * sizeof(float));
+             std::memcpy(self.data(), data.data(), self.length());
+           })
+      .def("reset", &DistModelDataBufReset<int32_t>)
+      .def("reset", &DistModelDataBufReset<int64_t>)
+      .def("reset", &DistModelDataBufReset<float>)
+      .def("length", &DistModelDataBuf::length)
+      .def("tolist",
+           [](DistModelDataBuf& self, const std::string& dtype) -> py::list {
+             py::list l;
+             if (dtype == "int32") {
+               auto* data = static_cast<int32_t*>(self.data());
+               auto size = self.length() / sizeof(int32_t);
+               l = py::cast(std::vector<int32_t>(data, data + size));
+             } else if (dtype == "int64") {
+               auto* data = static_cast<int64_t*>(self.data());
+               auto size = self.length() / sizeof(int64_t);
+               l = py::cast(std::vector<int64_t>(data, data + size));
+             } else if (dtype == "float32") {
+               auto* data = static_cast<float*>(self.data());
+               auto size = self.length() / sizeof(float);
+               l = py::cast(std::vector<float>(data, data + size));
+             } else {
+               PADDLE_THROW(platform::errors::Unimplemented(
+                   "Unsupported data type. Now only supports INT32, INT64 and "
+                   "FLOAT32."));
+             }
+             return l;
+           });
+
+  py::class_<DistModelTensor>(*m, "DistModelTensor")
+      .def(py::init<>())
+      .def(py::init(&DistModelTensorCreate<int32_t>), py::arg("data"),
+           py::arg("name") = "",
+           py::arg("lod") = std::vector<std::vector<size_t>>(),
+           py::arg("copy") = true)
+      .def(py::init(&DistModelTensorCreate<int64_t>), py::arg("data"),
+           py::arg("name") = "",
+           py::arg("lod") = std::vector<std::vector<size_t>>(),
+           py::arg("copy") = true)
+      .def(py::init(&DistModelTensorCreate<float>), py::arg("data"),
+           py::arg("name") = "",
+           py::arg("lod") = std::vector<std::vector<size_t>>(),
+           py::arg("copy") = true)
+      .def_readwrite("name", &DistModelTensor::name)
+      .def_readwrite("shape", &DistModelTensor::shape)
+      .def_readwrite("data", &DistModelTensor::data)
+      .def_readwrite("dtype", &DistModelTensor::dtype)
+      .def_readwrite("lod", &DistModelTensor::lod)
+      .def("as_ndarray", &DistModelTensorGetData);
+
+  py::enum_<DistModelDataType>(*m, "DistModelDataType")
+      .value("FLOAT32", DistModelDataType::FLOAT32)
+      .value("INT64", DistModelDataType::INT64)
+      .value("INT32", DistModelDataType::INT32);
 }
 }  // namespace pybind
 }  // namespace paddle