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Setting up a Deep Learning Machine from Scratch (Software)

A detailed guide to setting up your machine for deep learning research. Includes instructions to install drivers, tools and various deep learning frameworks. This was tested on a 64 bit machine with Nvidia Titan X, running Ubuntu 14.04

There are several great guides with a similar goal. Some are limited in scope, while others are not up to date. This guide is based on (with some portions copied verbatim from):

Basics
Nvidia Drivers
CUDA
cuDNN
Python Packages
Tensorflow
OpenBLAS
Common Tools
Caffe
Theano
Keras
Torch
X2Go

Basics

First, open a terminal and run the following commands to make sure your OS is up-to-date

  sudo apt-get update  
  sudo apt-get upgrade  
  sudo apt-get install build-essential cmake g++ gfortran git pkg-config python-dev software-properties-common wget
  sudo apt-get autoremove 
  sudo rm -rf /var/lib/apt/lists/*

Nvidia Drivers

Find your graphics card model
```
  lspci | grep -i nvidia
```
Go to the Nvidia website and find the latest drivers for your graphics card and system setup. You can download the driver from the website and install it, but doing so makes updating to newer drivers and uninstalling it a little messy. Also, doing this will require you having to quit your X server session and install from a Terminal session, which is a hassle.
We will install the drivers using apt-get. Check if your latest driver exists in the "Proprietary GPU Drivers" PPA. Note that the latest drivers are necessarily the most stable. It is advisable to install the driver version recommended on that page. Add the "Proprietary GPU Drivers" PPA repository. At the time of this writing, the latest version is 361.42, however, the recommended version is 352:
```
  sudo add-apt-repository ppa:graphics-drivers/ppa
  sudo apt-get update
  sudo apt-get install nvidia-352
```
Restart your system
```
  sudo shutdown -r now
```
Check to ensure that the correct version of NVIDIA drivers are installed
```
  cat /proc/driver/nvidia/version
```

CUDA

Download CUDA 7.5 from Nvidia. Go to the Downloads directory and install CUDA

  sudo dpkg -i cuda-repo-ubuntu1404*amd64.deb
  sudo apt-get update
  sudo apt-get install cuda

Add CUDA to the environment variables

  echo 'export PATH=/usr/local/cuda/bin:$PATH' >> ~/.bashrc
  echo 'export LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH' >> ~/.bashrc
  source ~/.bashrc

Check to ensure the correct version of CUDA is installed
```
  nvcc -V
```
Restart your computer
```
  sudo shutdown -r now
```

Checking your CUDA Installation (Optional)

Install the samples in the CUDA directory. Compile them (takes a few minutes):

  /usr/local/cuda/bin/cuda-install-samples-7.5.sh ~/cuda-samples
  cd ~/cuda-samples/NVIDIA*Samples
  make -j $(($(nproc) + 1))

Note: (-j $(($(nproc) + 1))) executes the make command in parallel using the number of cores in your machine, so the compilation is faster

Run deviceQuery and ensure that it detects your graphics card and the tests pass
```
  bin/x86_64/linux/release/deviceQuery
```

cuDNN

cuDNN is a GPU accelerated library for DNNs. It can help speed up execution in many cases. To be able to download the cuDNN library, you need to register in the Nvidia website at https://developer.nvidia.com/cudnn. This can take anywhere between a few hours to a couple of working days to get approved. Once your registration is approved, download cuDNN v4 for Linux. The latest version is cuDNN v5, however, not all toolkits support it yet.

Extract and copy the files

  cd ~/Downloads/
  tar xvf cudnn*.tgz
  cd cuda
  sudo cp */*.h /usr/local/cuda/include/
  sudo cp */libcudnn* /usr/local/cuda/lib64/
  sudo chmod a+r /usr/local/cuda/lib64/libcudnn*

Check

You can do a check to ensure everything is good so far using the nvidia-smi command. This should output some stats about your GPU

Python Packages

Install some useful Python packages using apt-get. There are some version incompatibilities with using pip install and TensorFlow ( see tensorflow/tensorflow#2034)

  sudo apt-get update && apt-get install -y python-numpy python-scipy python-nose \
                                          python-h5py python-skimage python-matplotlib \
                                  python-pandas python-sklearn python-sympy
  sudo apt-get clean && sudo apt-get autoremove
  rm -rf /var/lib/apt/lists/*

Tensorflow

This installs v0.8 with GPU support. Instructions below are from here

  sudo apt-get install python-pip python-dev
  sudo pip install --upgrade https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.8.0-cp27-none-linux_x86_64.whl

Run a test to ensure your Tensorflow installation is successful. When you execute the import command, there should be no warning/error.
```
  python
  >>> import tensorflow as tf
  >>> exit()
```

OpenBLAS

OpenBLAS is a linear algebra library and is faster than Atlas. This step is optional, but note that some of the following steps assume that OpenBLAS is installed. You'll need to install gfortran to compile it.
```
  mkdir ~/git
  cd ~/git
  git clone https://github.com/xianyi/OpenBLAS.git
  cd OpenBLAS
  make FC=gfortran -j $(($(nproc) + 1))
  sudo make PREFIX=/usr/local install
```

Add the path to your LD_LIBRARY_PATH variable

  echo 'export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH' >> ~/.bashrc

Common Tools

Install some common tools from the Scipy stack

  sudo apt-get install -y libfreetype6-dev libpng12-dev
  pip install -U matplotlib ipython[all] jupyter pandas scikit-image

Caffe

The following instructions are from here. The first step is to install the pre-requisites

  sudo apt-get install libprotobuf-dev libleveldb-dev libsnappy-dev libopencv-dev libhdf5-serial-dev protobuf-compiler
  sudo apt-get install --no-install-recommends libboost-all-dev
  sudo apt-get install libgflags-dev libgoogle-glog-dev liblmdb-dev

Clone the Caffe repo

  cd ~/git
  git clone https://github.com/BVLC/caffe.git
  cd caffe
  cp Makefile.config.example Makefile.config

If you installed cuDNN, uncomment the USE_CUDNN := 1 line in the Makefile
```
  sed -i 's/# USE_CUDNN := 1/USE_CUDNN := 1/' Makefile.config
```
If you installed OpenBLAS, modify the BLAS parameter value to open
```
  sed -i 's/BLAS := atlas/BLAS := open/' Makefile.config
```

Install the requirements, build Caffe, build the tests, run the tests and ensure that all tests pass. Note that all this takes a while

  sudo pip install -r python/requirements.txt
  make all -j $(($(nproc) + 1))
  make test -j $(($(nproc) + 1))
  make runtest -j $(($(nproc) + 1))

Build PyCaffe, the Python interface to Caffe
```
  make pycaffe -j $(($(nproc) + 1))
```

Add Caffe to your environment variable

  echo 'export CAFFE_ROOT=$(pwd)' >> ~/.bashrc
  echo 'export PYTHONPATH=$CAFFE_ROOT/python:$PYTHONPATH' >> ~/.bashrc
  source ~/.bashrc

Test to ensure that your Caffe installation is successful. There should be no warnings/errors when the import command is executed.
```
  ipython
  >>> import caffe
  >>> exit()
```

Theano

Install the pre-requisites and install Theano. These instructions are sourced from here

  sudo apt-get install python-numpy python-scipy python-dev python-pip python-nose g++ python-pygments python-sphinx python-nose
  sudo pip install Theano

Test your Theano installation. There should be no warnings/errors when the import command is executed.
```
  python
  >>> import theano
  >>> exit()
```

Keras

Keras is a useful wrapper around Theano and Tensorflow. By default, it uses Theano as the backend. See here for instructions on how to change this to Tensorflow.
```
  sudo pip install keras
```

Torch

Instructions to install Torch below are sourced from here. The installation takes a little while

  git clone https://github.com/torch/distro.git ~/git/torch --recursive
  cd torch; bash install-deps;
  ./install.sh

X2Go

If your deep learning machine is not your primary work desktop, it helps to be able to access it remotely. X2Go is a fantastic remote access solution. You can install the X2Go server on your Ubuntu machine using the instructions below.
```
  sudo apt-get install software-properties-common
  sudo add-apt-repository ppa:x2go/stable
  sudo apt-get update
  sudo apt-get install x2goserver x2goserver-xsession
```
X2Go does not support the Unity desktop environment (the default in Ubuntu). I have found XFCE to work pretty well. More details on the supported environmens here
```
  sudo apt-get update
  sudo apt-get install -y xfce4 xfce4-goodies xubuntu-desktop
```
Find the IP of your machine using
```
  hostname -I
```
You can install a client on your main machine to connect to your deep learning server using the above IP. More instructions here depending on your Client OS

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