TensorRT is a C++ library for high performance inference on NVIDIA GPUs and deep learning accelerators.

TensorRT Open Source Software

This repository contains the Open Source Software (OSS) components of NVIDIA TensorRT. Included are the sources for TensorRT plugins and parsers (Caffe and ONNX), as well as sample applications demonstrating usage and capabilities of the TensorRT platform.

Prerequisites

To build the TensorRT OSS components, ensure you meet the following package requirements:

System Packages

• CUDA

  • Recommended versions:
  • cuda-10.2 + cuDNN-7.6
  • cuda-10.0 + cuDNN-7.6

• GNU Make >= v4.1

• CMake >= v3.13

• Python

  • Recommended versions:
  • Python2 >= v2.7.15
  • Python3 >= v3.6.5

• PIP >= v19.0

• Essential libraries and utilities

  • Git, pkg-config, Wget, Zlib

• Cross compilation for Jetson platforms requires JetPack’s host component installation

  • JetPack >= 4.2

Optional Packages

• Containerized builds

  • Docker >= 1.12
  • NVIDIA Docker >= 2.0

• Code formatting tools

  • Clang-format
  • Git-clang-format

TensorRT Release

• TensorRT v7.0

NOTE: Along with the TensorRT OSS components, the following source packages will also be downloaded, and they are not required to be installed on the system.

• ONNX-TensorRT v7.0
• CUB v1.8.0
• Protobuf v3.8.x

Downloading The TensorRT Components

1. Download TensorRT OSS sources.

   git clone -b master https://github.com/nvidia/TensorRT TensorRT -b release/7.0
   cd TensorRT
   git submodule update --init --recursive
   export TRT_SOURCE=`pwd`
   

   ``

2. Download the TensorRT binary release.

   To build the TensorRT OSS, obtain the corresponding TensorRT 7.0 binary release from NVidia Developer Zone. For a list of key features, known and fixed issues, refer to the TensorRT 7.0 Release Notes.

   Example: Ubuntu 18.04 with cuda-10.2

   Download and extract the latest TensorRT 7.0 GA package for Ubuntu 18.04 and CUDA 10.2

   cd ~/Downloads
   # Download TensorRT-7.0.0.11.Ubuntu-18.04.x86_64-gnu.cuda-10.2.cudnn7.6.tar.gz
   tar -xvzf TensorRT-7.0.0.11.Ubuntu-18.04.x86_64-gnu.cuda-10.2.cudnn7.6.tar.gz
   export TRT_RELEASE=`pwd`/TensorRT-7.0.0.11
   export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TRT_RELEASE/lib
   

   ``

   Example: CentOS/RedHat 7 with cuda-10.0

   Download and extract the TensorRT 7.0 GA for CentOS/RedHat 7 and CUDA 10.0 tar package

   cd ~/Downloads
   # Download TensorRT-7.0.0.11.CentOS-7.6.x86_64-gnu.cuda-10.0.cudnn7.6.tar.gz
   tar -xvzf TensorRT-7.0.0.11.CentOS-7.6.x86_64-gnu.cuda-10.0.cudnn7.6.tar.gz
   export TRT_RELEASE=`pwd`/TensorRT-7.0.0.11
   export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$TRT_RELEASE/lib
   

   ``

3. Download JetPack packages for cross-compilation.[OPTIONAL]

Using the SDK manager, download the host componets of the PDK version or Jetpack specified in the name of the Dockerfile. To do this:

1. [SDK Manager Step 01] Log into the SDK manager
2. [SDK Manager Step 01] Select the correct platform and Target OS System (should be corresponding to the name of the Dockerfile you are building (e.g. Jetson AGX Xavier, Linux Jetpack 4.2.1), then click Continue
3. [SDK Manager Step 02] Under Download & Install Options make note of or change the download folder and Select Download now. Install later. then agree to the license terms and click Continue

You should now have all expected files to build the container. Move these into the docker/jetpack_files folder.

Setting Up The Build Environment

• Install the System Packages list of components in the Prerequisites section.

• Alternatively, use the build containers as described below:

1. Generate the TensorRT build container.

The docker container can be built using the included Dockerfile. The build container is configured with the environment and packages required for building TensorRT OSS.

Example: Ubuntu 18.04 with cuda-10.2

docker build -f docker/ubuntu.Dockerfile --build-arg UBUNTU_VERSION=18.04 --build-arg CUDA_VERSION=10.2 --tag=tensorrt-ubuntu .

Example: CentOS/RedHat 7 with cuda-10.0

docker build -f docker/centos.Dockerfile --build-arg CENTOS_VERSION=7 --build-arg CUDA_VERSION=10.0 --tag=tensorrt-centos .

Example: Cross compile for JetPack 4.2.1 with cuda-10.0

docker build -f docker/ubuntu-cross-aarch64.Dockerfile --build-arg UBUNTU_VERSION=18.04 --build-arg CUDA_VERSION=10.0 --tag tensorrt-ubuntu-aarch64 .
`

2. Launch the TensorRT build container.

   docker run -v $TRT_RELEASE:/tensorrt -v $TRT_SOURCE:/workspace/TensorRT -it tensorrt-ubuntu:latest
   

   ``

   NOTE: To run TensorRT/CUDA programs within the build container, install nvidia-docker. Replace the docker run command with nvidia-docker run or docker run --runtime=nvidia.

Building The TensorRT OSS Components

• Generate Makefiles and build.

  cd $TRT_SOURCE
  mkdir -p build && cd build
  cmake .. -DTRT_LIB_DIR=$TRT_RELEASE/lib -DTRT_BIN_DIR=`pwd`/out
  make -j$(nproc)
  

  
  NOTE:
  1. The default CUDA version used by CMake is 10.2. To override this, for example to 10.0, append `-DCUDA_VERSION=10.0` to the cmake command.
  2. Samples may fail to link on CentOS7. To work around this create the following symbolic link:
  `ln -s $TRT_BIN_DIR/libnvinfer_plugin.so $TRT_BIN_DIR/libnvinfer_plugin.so.7`
  
  e required CMake arguments are:
  
  `TRT_LIB_DIR`: Path to the TensorRT installation directory containing libraries.
  
  `TRT_BIN_DIR`: Output directory where generated build artifacts will be copied.
  
  e following CMake build parameters are *optional*:
  
  `CMAKE_BUILD_TYPE`: Specify if binaries generated are for release or debug (contain debug symbols). Values consists of [`Release`] | `Debug`
  
  `CUDA_VERISON`: The version of CUDA to target, for example [`10.2`].
  
  `CUDNN_VERSION`: The version of cuDNN to target, for example [`7.6`].
  
  `PROTOBUF_VERSION`:  The version of Protobuf to use, for example [`3.8.x`]. Note: Changing this will not configure CMake to use a system version of Protobuf, it will configure CMake to download and try building that version.
  
  `CMAKE_TOOLCHAIN_FILE`: The path to a toolchain file for cross compilation.
  
  `BUILD_PARSERS`: Specify if the parsers should be built, for example [`ON`] | `OFF`.  If turned OFF, CMake will try to find precompiled versions of the parser libraries to use in compiling samples. First in `${TRT_LIB_DIR}`, then on the system. If the build type is Debug, then it will prefer debug builds of the libraries before release versions if available.
  
  `BUILD_PLUGINS`: Specify if the plugins should be built, for example [`ON`] | `OFF`. If turned OFF, CMake will try to find a precompiled version of the plugin library to use in compiling samples. First in `${TRT_LIB_DIR}`, then on the system. If the build type is Debug, then it will prefer debug builds of the libraries before release versions if available.
  
  `BUILD_SAMPLES`: Specify if the samples should be built, for example [`ON`] | `OFF`.
  
  her build options with limited applicability:
  
  `NVINTERNAL`: Used by TensorRT team for internal builds. Values consists of [`OFF`] | `ON`.
  
  `PROTOBUF_INTERNAL_VERSION`: The version of protobuf to use, for example [`10.0`].  Only applicable if `NVINTERNAL` is also enabled.
  
  `NVPARTNER`: For use by NVIDIA partners with exclusive source access.  Values consists of [`OFF`] | `ON`.
  
  `CUB_VERSION`: The version of CUB to use, for example [`1.8.0`].
  
  `GPU_ARCHS`: GPU (SM) architectures to target. By default we generate CUDA code for all major SMs. Specific SM versions can be specified here as a quoted space-separated list to reduce compilation time and binary size. Table of compute capabilities of NVIDIA GPUs can be found [here](https://developer.nvidia.com/cuda-gpus). Examples:
  Titan V: `-DGPU_ARCHS="70"`
  Tesla V100: `-DGPU_ARCHS="70"`
  GeForce RTX 2080: `-DGPU_ARCHS="75"`
  Tesla T4: `-DGPU_ARCHS="75"`
  Multiple SMs: `-DGPU_ARCHS="70 75"`
  
  

Install the TensorRT OSS Components [Optional]

• Copy the build artifacts into the TensorRT installation directory, updating the installation.

  • TensorRT installation directory is determined as $TRT_LIB_DIR/..

  • Installation might require superuser privileges depending on the path and permissions of files being replaced.

  • Installation is not supported in cross compilation scenario. Please copy the result files from build/out folder into the target device.

    sudo make install
    

• Verify the TensorRT samples have been installed correctly.

  cd $TRT_LIB_DIR/../bin/
  ./sample_googlenet
  

  
   the sample was installed correctly, the following information will be printed out in the terminal.
  
  `bash
  8/23/2019-22:08:57] [I] Building and running a GPU inference engine for GoogleNet
  8/23/2019-22:08:59] [I] [TRT] Some tactics do not have sufficient workspace memory to run. Increasing workspace size may increase performance, please check verbose output.
  8/23/2019-22:09:05] [I] [TRT] Detected 1 inputs and 1 output network tensors.
  8/23/2019-22:09:05] [I] Ran /tensorrt/bin/sample_googlenet with: 
  8/23/2019-22:09:05] [I] Input(s): data 
  8/23/2019-22:09:05] [I] Output(s): prob 
  && PASSED TensorRT.sample_googlenet # /tensorrt/bin/sample_googlenet
  

Useful Resources

TensorRT

• TensorRT Homepage
• TensorRT Developer Guide
• TensorRT Sample Support Guide
• TensorRT Discussion Forums

Known Issues

TensorRT 7.0

• See Release Notes.