Install Pytorch in AWS from Source

Official Instruction

Update OS

```shell script sudo yum update

## Installation
### Python Environment
* Install python
```shell script
sudo yum install python3.7

• Install conda shell script cd ~ wget https://repo.anaconda.com/archive/Anaconda3-2020.02-Linux-x86_64.sh bash Anaconda3-2020.02-Linux-x86_64.sh export PATH=~/anaconda3/bin:$PATH
• Install python modules shell script conda install -c pytorch magma-cuda90 conda install numpy ninja pyyaml mkl mkl-include setuptools cmake cffi

  Dev Libs

• Install official libs shell script sudo yum groupinstall "Development Tools" sudo yum install glog sudo yum install protobuf-devel leveldb-devel snappy-devel opencv-devel boost-devel hdf5-devel sudo yum install python3-devel
• Create path for source libs shell script mkdir -p ~/workspaces/workspace_cpp

  Install libs from sources

• lmdb shell script cd ~/workspaces/workspace_cpp/ git clone https://github.com/LMDB/lmdb.git cd lmdb/libraries/liblmdb/ make sudo make install
• gflags shell script cd ~/workspaces/workspace_cpp/ git clone https://github.com/gflags/gflags.git cd gflags/ mkdir build cd build/ export CXXFLAGS="-fPIC" && cmake .. && make sudo make install
• glog shell script cd ~/workspaces/workspace_cpp/ clone https://github.com/google/glog cd glog/ mkdir build && cd build export CXXFLAGS="-fPIC" && cmake .. && make sudo make install
• matplotlibcpp (optional) ```shell script sudo pip3 install matplotlib cd ~workspaces/workspace_cpp/ git clone https://github.com/lava/matplotlib-cpp.git

  ### Install pytorch
  ```shell script
  cd ~/workspaces/workspace_cpp/
  git clone --recursive https://github.com/pytorch/pytorch
  cd pytorch
  git submodule sync
  git submodule update --init --recursive
  export CMAKE_PREFIX_PATH=${CONDA_PREFIX:-"$(dirname $(which conda))/../"}
  USE_LMDB=ON python3 setup.py install --cmake
  

  Set environment

  Append following command to ~/.bashrc shell script export LD_LIBRARY_PATH=/usr/local/lib

  Makefile

  Add following settings in CMakeLists.txt ```shell script cmake_minimum_required(VERSION 3.1 FATAL_ERROR) project (YOURPROJNAME)

set(WORKSPACE_PATH /home/ec2-user/workspaces/workspace_cpp) set(PYTORCH_SRC_PATH ${WORKSPACE_PATH}/pytorch) set(PYTORCH_SRC_INC_PATH ${PYTORCH_SRC_PATH}/torch/include/)

set(PYTORCH_BLD_PATH ${PYTORCH_SRC_PATH}/build/) set(PYTORCH_GEN_INC_PATH ${PYTORCH_BLD_PATH}/lib.linux-x86_64-3.7/torch/include/) set(PYTORCH_GEN_LIB_PATH ${PYTORCH_BLD_PATH}/lib/) set(PYTORCH_LIB_PATH ${PYTORCH_BLD_PATH}/lib.linux-x86_64-3.7/torch/lib/) set(STATIC_LIB_PATH ${PYTORCH_GEN_LIB_PATH})

set(static_libs ${STATIC_LIB_PATH}/libprotoc.a ${STATIC_LIB_PATH}/libprotobuf.a ${STATIC_LIB_PATH}/libpthreadpool.a ${STATIC_LIB_PATH}/libc10d.a )

set(shared_libs opencv_core opencv_highgui opencv_imgproc torch torch_cpu glog gflags boost_system c10 rt pthread lmdb python3.7m stdc++fs) set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_FLAGS “-g -std=c++17”) set(CMAKE_BUILD_TYPE Debug)

include_directories(include) include_directories(${CAFFE2_SRC_INC_PATH}) include_directories(${CAFFE2_GEN_INC_PATH}) include_directories(${CAFFE2_SRC_PATH}/torch/csrc/api/include) include_directories(${WORKSPACE_PATH}/matplotlib-cpp) include_directories(/usr/include/python3.7m) include_directories(/usr/local/lib64/python3.7/site-packages/numpy/core/include)

link_directories(${CAFFE2_LIB_PATH}) ```