CUDA 5.5 install instructions

1) Install Ubuntu 12.04.3 64-bit

2) Update
    open terminal:
    sudo apt-get update && sudo apt-get upgrade
    sudo shutdown -r now # reboot machine

3) install compilation tools, mpi, nvidia-331 driver, gcc/g++ 4.6
   (supported, as opposed to gcc/g++ 4.8 or 4.7.3) and set as default.
   Also, install other libraries needed for CUDA Toolkit Samples compilation and make the
   respective symbolic links to where the CUDA Toolkit installer will find them:

    sudo add-apt-repository ppa:xorg-edgers/ppa # adds repository that has latest NVIDIA drivers for 12.04.3
    sudo apt-get update # updates package lists
    sudo apt-get install build-essential libcr-dev mpich2 mpich2-doc gcc-4.6 g++-4.6 nvidia-331 # build tools, compilers, gcc, nvidia
    sudo apt-get install libX11-dev libglu1-mesa libXi-dev libXmu-dev freeglut3-dev # libraries needed for compiling CUDA samples
    sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.6
    sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 40 --slave /usr/bin/g++ g++ /usr/bin/g++-4.8
    sudo ln -s /usr/lib/x86_64-linux-gnu/libXi.so /usr/lib/libXi.so
    sudo ln -s /usr/lib/x86_64-linux-gnu/libGLU.so /usr/lib/libGLU.so
    sudo ln -s /usr/lib/x86_64-linux-gnu/libX11.so /usr/lib/libX11.so
    sudo ln -s /usr/lib/x86_64-linux-gnu/libXmu.so /usr/lib/libXmu.so
    sudo ln -s /usr/lib/x86_64-linux-gnu/libglut.so /usr/lib/libglut.so
    sudo shutdown -r now # reboot machine

4) download & install CUDA 5.5 Toolkit 64-bit for Ubuntu 12.10 (RUN):
    download here: https://developer.nvidia.com/cuda-downloads

    install -- open terminal in directory where downloaded:

    chmod +x cuda_5.5.22_linux_64.run # This marks archive as an executable, archive name might be different
    sudo ./cuda_5.5.22_linux_64.run

    # step through license agreement, then type: accept
    Confirm you are installing on unsupported configuration -- type: y
    Installer will ask to install NVIDIA driver -- type: n
    Installer will ask to install the CUDA 5.5 Toolkit -- type: y
    Installer will ask toolkit location -- default is okay, hit Enter key to select default
    Installer will ask to install CUDA 5.5 Samples -- type: y
    Installer will ask samples location -- this can be changed, or left to default, I chose /opt/cuda_samples and later chown'ed that directory so that all could read/write to it

    Installer should complete, saying:

    ===========
    = Summary =
    ===========

    Driver:   Not Selected
    Toolkit:  Installed in /usr/local/cuda-5.5
    Samples:  Installed in /opt/cuda_samples

    Next:

    gedit ~/.bashrc &

    and place the following lines in the file:

    export PATH=/usr/local/cuda/bin:$PATH
    export LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/local/cuda/lib:/usr/lib/nvidia-319:$LD_LIBRARY_PATH

    Also add a variable in .bashrc called CUDA_SAMPLES pointing to the directory where the CUDA samples were installed from above... i.e.:

    export CUDA_SAMPLES=/home/username/NVIDIA_CUDA-5.5_Samples

    Lastly, to compile all the CUDA Toolkit sources:

    # needed to compile samples that depend on GL
    cp /usr/local/cuda-5.5/extras/CUPTI/include/GL/glu.h ${CUDA_SAMPLES}/common/inc/GL/
    cp /usr/local/cuda-5.5/extras/CUPTI/include/GL/gl.h ${CUDA_SAMPLES}/common/inc/GL/

    Finally, from a terminal in the directory that was chosed to install the samples type: make
    All the samples should compile successfully.

    For platforms with Optimus (laptops) refer to: http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux/index.html