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paddle_infer_cpp #5467
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# 服务器端C++预测 | ||
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test本教程将介绍在服务器端部署mobilenet_v3_small模型的详细步骤。 | ||
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## 1. 准备环境 | ||
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### 运行准备 | ||
- Linux环境,推荐使用docker[安装说明](https://www.paddlepaddle.org.cn/install/quick?docurl=/documentation/docs/zh/install/docker/linux-docker.html)。 | ||
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### 1.1 编译opencv库 | ||
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* 首先需要从opencv官网上下载在Linux环境下源码编译的包,以3.4.7版本为例,下载及解压缩命令如下: | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 首先需要从opencv官网上下载Linux环境下的源码 |
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``` | ||
wget https://github.com/opencv/opencv/archive/3.4.7.tar.gz | ||
tar -xvf 3.4.7.tar.gz | ||
``` | ||
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最终可以在当前目录下看到`opencv-3.4.7/`的文件夹。 | ||
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* 编译opencv,首先设置opencv源码路径(`root_path`)以及安装路径(`install_path`),`root_path`为下载的opencv源码路径,`install_path`为opencv的安装路径。在本例中,源码路径即为当前目录下的`opencv-3.4.7/`。 | ||
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```shell | ||
cd ./opencv-3.4.7 | ||
export root_path=$PWD | ||
export install_path=${root_path}/opencv3 | ||
``` | ||
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* 然后在opencv源码路径下,按照下面的方式进行编译。 | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 按照下面的命令进行编译 |
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```shell | ||
rm -rf build | ||
mkdir build | ||
cd build | ||
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cmake .. \ | ||
-DCMAKE_INSTALL_PREFIX=${install_path} \ | ||
-DCMAKE_BUILD_TYPE=Release \ | ||
-DBUILD_SHARED_LIBS=OFF \ | ||
-DWITH_IPP=OFF \ | ||
-DBUILD_IPP_IW=OFF \ | ||
-DWITH_LAPACK=OFF \ | ||
-DWITH_EIGEN=OFF \ | ||
-DCMAKE_INSTALL_LIBDIR=lib64 \ | ||
-DWITH_ZLIB=ON \ | ||
-DBUILD_ZLIB=ON \ | ||
-DWITH_JPEG=ON \ | ||
-DBUILD_JPEG=ON \ | ||
-DWITH_PNG=ON \ | ||
-DBUILD_PNG=ON \ | ||
-DWITH_TIFF=ON \ | ||
-DBUILD_TIFF=ON | ||
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make -j | ||
make install | ||
``` | ||
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* `make install`完成之后,会在该文件夹下生成opencv头文件和库文件,用于后面的代码编译。 | ||
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以opencv3.4.7版本为例,最终在安装路径下的文件结构如下所示。**注意**:不同的opencv版本,下述的文件结构可能不同。 | ||
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``` | ||
opencv3/ | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 各个文件夹需要介绍一下 |
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|-- bin | ||
|-- include | ||
|-- lib64 | ||
|-- share | ||
``` | ||
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### 1.2 下载或者编译Paddle预测库 | ||
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* 有2种方式获取Paddle预测库,下面进行详细介绍。 | ||
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#### 1.2.1 预测库源码编译 | ||
* 如果希望获取最新预测库特性,可以从Paddle github上克隆最新代码,源码编译预测库。 | ||
* 可以参考[Paddle预测库官网](https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/guides/05_inference_deployment/inference/build_and_install_lib_cn.html#id16)的说明,从github上获取Paddle代码,然后进行编译,生成最新的预测库。使用git获取代码方法如下。 | ||
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```shell | ||
git clone https://github.com/PaddlePaddle/Paddle.git | ||
``` | ||
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* 进入Paddle目录后,使用如下方法编译。 | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 使用如下命令编译 |
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```shell | ||
rm -rf build | ||
mkdir build | ||
cd build | ||
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cmake .. \ | ||
-DWITH_CONTRIB=OFF \ | ||
-DWITH_MKL=ON \ | ||
-DWITH_MKLDNN=ON \ | ||
-DWITH_TESTING=OFF \ | ||
-DCMAKE_BUILD_TYPE=Release \ | ||
-DWITH_INFERENCE_API_TEST=OFF \ | ||
-DON_INFER=ON \ | ||
-DWITH_PYTHON=ON | ||
make -j | ||
make inference_lib_dist | ||
``` | ||
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更多编译参数选项可以参考Paddle C++预测库官网:[https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/guides/05_inference_deployment/inference/build_and_install_lib_cn.html#id16](https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/guides/05_inference_deployment/inference/build_and_install_lib_cn.html#id16)。 | ||
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* 编译完成之后,可以在`build/paddle_inference_install_dir/`文件下看到生成了以下文件及文件夹。 | ||
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``` | ||
build/paddle_inference_install_dir/ | ||
|-- CMakeCache.txt | ||
|-- paddle | ||
|-- third_party | ||
|-- version.txt | ||
``` | ||
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其中`paddle`就是之后进行C++预测时所需的Paddle库,`version.txt`中包含当前预测库的版本信息。 | ||
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#### 1.2.2 直接下载安装 | ||
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* [Paddle预测库官网](https://paddleinference.paddlepaddle.org.cn/user_guides/download_lib.html)上提供了不同cuda版本的Linux预测库,可以在官网查看并选择合适的预测库版本。 | ||
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以`manylinux_cuda11.1_cudnn8.1_avx_mkl_trt7_gcc8.2`版本为例,使用下述命令下载并解压: | ||
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```shell | ||
wget https://paddle-inference-lib.bj.bcebos.com/2.2.2/cxx_c/Linux/GPU/x86-64_gcc8.2_avx_mkl_cuda11.1_cudnn8.1.1_trt7.2.3.4/paddle_inference.tgz | ||
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tar -xvf paddle_inference.tgz | ||
``` | ||
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最终会在当前的文件夹中生成`paddle_inference/`的子文件夹。 | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 这里补充一下 |
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## 2 开始运行 | ||
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### 2.1 将模型导出为inference model | ||
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* 可以参考[模型导出](../../tools/export_model.py),导出`inference model`,用于模型预测。得到预测模型后,假设模型文件放在`inference`目录下,则目录结构如下。 | ||
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``` | ||
mobilenet_v3_small_infer/ | ||
|--inference.pdmodel | ||
|--inference.pdiparams | ||
|--inference.pdiparams.info | ||
``` | ||
**注意**:上述文件中,`inference.pdmodel`文件存储了模型结构信息,`inference.pdiparams`文件存储了模型参数信息。注意两个文件的路径需要与配置文件`tools/config.txt`中的`cls_model_path`和`cls_params_path`参数对应一致。 | ||
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### 2.2 编译 C++预测demo | ||
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* 编译命令如下,其中Paddle C++预测库、opencv等其他依赖库的地址需要换成自己机器上的实际地址。 | ||
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```shell | ||
sh tools/build.sh | ||
``` | ||
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具体地,`tools/build.sh`中内容如下。 | ||
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```shell | ||
OPENCV_DIR=your_opencv_dir | ||
LIB_DIR=your_paddle_inference_dir | ||
CUDA_LIB_DIR=your_cuda_lib_dir | ||
CUDNN_LIB_DIR=your_cudnn_lib_dir | ||
TENSORRT_DIR=your_tensorrt_lib_dir | ||
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BUILD_DIR=build | ||
rm -rf ${BUILD_DIR} | ||
mkdir ${BUILD_DIR} | ||
cd ${BUILD_DIR} | ||
cmake .. \ | ||
-DPADDLE_LIB=${LIB_DIR} \ | ||
-DWITH_MKL=ON \ | ||
-DDEMO_NAME=clas_system \ | ||
-DWITH_GPU=OFF \ | ||
-DWITH_STATIC_LIB=OFF \ | ||
-DWITH_TENSORRT=OFF \ | ||
-DTENSORRT_DIR=${TENSORRT_DIR} \ | ||
-DOPENCV_DIR=${OPENCV_DIR} \ | ||
-DCUDNN_LIB=${CUDNN_LIB_DIR} \ | ||
-DCUDA_LIB=${CUDA_LIB_DIR} \ | ||
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make -j | ||
``` | ||
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上述命令中, | ||
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* `OPENCV_DIR`为opencv编译安装的地址(本例中为`opencv-3.4.7/opencv3`文件夹的路径); | ||
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* `LIB_DIR`为下载的Paddle预测库(`paddle_inference`文件夹),或编译生成的Paddle预测库(`build/paddle_inference_install_dir`文件夹)的路径; | ||
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* `CUDA_LIB_DIR`为cuda库文件地址,在docker中为`/usr/local/cuda/lib64`; | ||
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* `CUDNN_LIB_DIR`为cudnn库文件地址,在docker中为`/usr/lib64`。 | ||
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* `TENSORRT_DIR`是tensorrt库文件地址,在dokcer中为`/usr/local/TensorRT-7.2.3.4/`,TensorRT需要结合GPU使用。 | ||
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在执行上述命令,编译完成之后,会在当前路径下生成`build`文件夹,其中生成一个名为`clas_system`的可执行文件。 | ||
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### 运行demo | ||
* 首先修改`tools/config.txt`中对应字段: | ||
* use_gpu:是否使用GPU; | ||
* gpu_id:使用的GPU卡号; | ||
* gpu_mem:显存; | ||
* cpu_math_library_num_threads:底层科学计算库所用线程的数量; | ||
* use_mkldnn:是否使用MKLDNN加速; | ||
* use_tensorrt: 是否使用tensorRT进行加速; | ||
* use_fp16:是否使用半精度浮点数进行计算,该选项仅在use_tensorrt为true时有效; | ||
* cls_model_path:预测模型结构文件路径; | ||
* cls_params_path:预测模型参数文件路径; | ||
* resize_short_size:预处理时图像缩放大小; | ||
* crop_size:预处理时图像裁剪后的大小。 | ||
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* 然后修改`tools/run.sh`: | ||
* `./build/clas_system ./tools/config.txt /work/Docs/models/tutorials/mobilenetv3_prod/Step6/images/demo.jpg` | ||
* 上述命令中分别为:编译得到的可执行文件`clas_system`;运行时的配置文件`config.txt`;待预测的图像。 | ||
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* 最后执行以下命令,完成对一幅图像的分类。 | ||
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```shell | ||
sh tools/run.sh | ||
``` | ||
对于下面的图像进行预测 | ||
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<div align="center"> | ||
<img src="../../images/demo.jpg" width=300"> | ||
</div> | ||
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* 最终屏幕上会输出结果,如下图所示 | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. 下面没有图,改为如下所示,下面的输出用``````包裹一下 |
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class id: 8 | ||
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score: 0.9014717937 | ||
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Current image path: /work/Docs/models/tutorials/mobilenetv3_prod/Step6/images/demo.jpg | ||
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Current time cost: 0.0473620000 s, average time cost in all: 0.0473620000 s. | ||
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表示预测的类别ID是`8`,置信度为`0.901`,该结果与基于训练引擎的结果完全一致。 | ||
其中`class id`表示置信度最高的类别对应的id,score表示图片属于该类别的概率。 |
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// Copyright (c) 2020 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. | ||
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#pragma once | ||
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#include "opencv2/core.hpp" | ||
#include "opencv2/imgcodecs.hpp" | ||
#include "opencv2/imgproc.hpp" | ||
#include "paddle_inference_api.h" | ||
#include <chrono> | ||
#include <iomanip> | ||
#include <iostream> | ||
#include <ostream> | ||
#include <vector> | ||
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#include <cstring> | ||
#include <fstream> | ||
#include <numeric> | ||
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#include <include/preprocess_op.h> | ||
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using namespace paddle_infer; | ||
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namespace PaddleClas { | ||
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class Classifier { | ||
public: | ||
explicit Classifier(const std::string &model_path, | ||
const std::string ¶ms_path, const bool &use_gpu, | ||
const int &gpu_id, const int &gpu_mem, | ||
const int &cpu_math_library_num_threads, | ||
const bool &use_mkldnn, const bool &use_tensorrt, | ||
const bool &use_fp16, const int &resize_short_size, | ||
const int &crop_size) { | ||
this->use_gpu_ = use_gpu; | ||
this->gpu_id_ = gpu_id; | ||
this->gpu_mem_ = gpu_mem; | ||
this->cpu_math_library_num_threads_ = cpu_math_library_num_threads; | ||
this->use_mkldnn_ = use_mkldnn; | ||
this->use_tensorrt_ = use_tensorrt; | ||
this->use_fp16_ = use_fp16; | ||
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this->resize_short_size_ = resize_short_size; | ||
this->crop_size_ = crop_size; | ||
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LoadModel(model_path, params_path); | ||
} | ||
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// Load Paddle inference model | ||
void LoadModel(const std::string &model_path, const std::string ¶ms_path); | ||
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// Run predictor | ||
double Run(cv::Mat &img); | ||
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private: | ||
std::shared_ptr<Predictor> predictor_; | ||
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bool use_gpu_ = false; | ||
int gpu_id_ = 0; | ||
int gpu_mem_ = 4000; | ||
int cpu_math_library_num_threads_ = 4; | ||
bool use_mkldnn_ = false; | ||
bool use_tensorrt_ = false; | ||
bool use_fp16_ = false; | ||
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std::vector<float> mean_ = {0.485f, 0.456f, 0.406f}; | ||
std::vector<float> scale_ = {1 / 0.229f, 1 / 0.224f, 1 / 0.225f}; | ||
bool is_scale_ = true; | ||
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int resize_short_size_ = 256; | ||
int crop_size_ = 224; | ||
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// pre-process | ||
ResizeImg resize_op_; | ||
Normalize normalize_op_; | ||
Permute permute_op_; | ||
CenterCropImg crop_op_; | ||
}; | ||
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} // namespace PaddleClas |
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这个文档也需要添加,tutorials/tipc/infer_cpp/infer_cpp.md