CentOS 6 Installation Instructions¶
Warning
If you want to install the bleeding-edge or development version of Theano from GitHub, please make sure you are reading the latest version of this page.
Requirements¶
Note
We only support the installation of the requirements through conda.
- Python == 2.7* or ( >= 3.3 and < 3.6 )
- The development package (python-dev or python-devel on most Linux distributions) is recommended (see just below). Python 2.4 was supported up to and including the release 0.6. Python 2.6 was supported up to and including the release 0.8.2. Python 3 is supported past the 3.3 release.
- NumPy >= 1.9.1 <= 1.12
- Earlier versions could work, but we don’t test it.
- SciPy >= 0.14 < 0.17.1
- Only currently required for sparse matrix and special functions support, but highly recommended. SciPy >=0.8 could work, but earlier versions have known bugs with sparse matrices.
- BLAS installation (with Level 3 functionality)
- Recommended: MKL, which is free through Conda with
mkl-service
package.- Alternatively, we suggest to install OpenBLAS, with the development headers (
-dev
,-devel
, depending on your Linux distribution).
Optional requirements
python-dev
,g++
>= 4.2- Highly recommended. Theano can fall back on a NumPy-based Python execution model, but a C compiler allows for vastly faster execution.
- nose >= 1.3.0
- Recommended, to run Theano’s test-suite.
- Sphinx >= 0.5.1, pygments
- For building the documentation. LaTeX and dvipng are also necessary for math to show up as images.
- pydot-ng
- To handle large picture for gif/images.
- NVIDIA CUDA drivers and SDK
- Highly recommended Required for GPU code generation/execution on NVIDIA gpus. See instruction below.
- libgpuarray
- Required for GPU/CPU code generation on CUDA and OpenCL devices (see: GpuArray Backend).
- pycuda and skcuda
- Required for some extra operations on the GPU like fft and solvers. We use them to wrap cufft and cusolver. Quick install
pip install pycuda scikit-cuda
. For cuda 8, the dev version of skcuda (will be released as 0.5.2) is needed for cusolver:pip install pycuda; pip install git+https://github.com/lebedov/scikit-cuda.git#egg=scikit-cuda
.
Requirements installation through Conda (recommended)¶
Install Miniconda¶
Follow this link to install Miniconda.
Note
If you want fast compiled code (recommended), make sure you have g++
installed.
Install requirements and optional packages¶
conda install numpy scipy mkl <nose> <sphinx> <pydot-ng>
- Arguments between <...> are optional.
Install and configure the GPU drivers (recommended)¶
Warning
OpenCL support is still minimal for now.
Install CUDA drivers
- Follow this link to install the CUDA driver and the CUDA Toolkit.
- You must reboot the computer after the driver installation.
- Test that it was loaded correctly after the reboot, executing the command nvidia-smi from the command line.
Note
Sanity check: The bin subfolder should contain an nvcc program. This folder is called the cuda root directory.
- Fix ‘lib’ path
- Add the ‘lib’ subdirectory (and/or ‘lib64’ subdirectory if you have a
64-bit OS) to your
$LD_LIBRARY_PATH
environment variable.
- Add the ‘lib’ subdirectory (and/or ‘lib64’ subdirectory if you have a
64-bit OS) to your
Set Theano’s config flags
To use the GPU you need to define the cuda root. You can do it in one of the following ways:
- Define a $CUDA_ROOT environment variable to equal the cuda root directory, as in
CUDA_ROOT=/path/to/cuda/root
, or - add a
cuda.root
flag toTHEANO_FLAGS
, as inTHEANO_FLAGS='cuda.root=/path/to/cuda/root'
, or - add a [cuda] section to your .theanorc file containing the option
root = /path/to/cuda/root
.
- Define a $CUDA_ROOT environment variable to equal the cuda root directory, as in
Installation¶
Stable Installation¶
With conda
¶
If you use conda, you can directly install both theano and pygpu. Libgpuarray will be automatically installed as a dependency.
conda install theano pygpu
Warning
Last conda packages for theano (0.9) and pygpu (0.6*) currently don’t support Python 3.4 branch.
With pip
¶
If you use pip, you have to install Theano and libgpuarray separately.
theano¶
Install the latest stable version of Theano with:
<sudo> pip install <--user> Theano[test, doc]
- Any argument between <...> is optional.
- Use sudo for a root installation.
- Use user for a user installation without admin rights. It will install Theano in your local site-packages.
- [test] will install the requirements for testing.
- [doc] will install the requirements in order to generate the documentation.
If you encountered any trouble, head to the Troubleshooting page.
The latest stable version of Theano is 0.9.0
(tagged with rel-0.9.0
).
libgpuarray¶
For the stable version of Theano you need a specific version of libgpuarray,
that has been tagged v0.6.2
.
Download it with:
git clone https://github.com/Theano/libgpuarray.git
cd libgpuarray
git checkout tags/v0.6.2 -b v0.6.2
and then follow the Step-by-step instructions.
Bleeding-Edge Installation (recommended)¶
Install the latest, bleeding-edge, development version of Theano with:
<sudo> pip install <--user> <--no-deps> git+https://github.com/Theano/Theano.git#egg=Theano
- Any argument between <...> is optional.
- Use sudo for a root installation.
- Use user for a user installation without admin rights. It will install Theano in your local site-packages.
- Use no-deps when you don’t want the dependencies of Theano to be installed through pip. This is important when they have already been installed as system packages.
If you encountered any trouble, head to the Troubleshooting page.
libgpuarray¶
Install the latest, development version of libgpuarray following the Step-by-step instructions.
Developer Installation¶
Install the developer version of Theano with:
git clone git://github.com/Theano/Theano.git
cd Theano
<sudo> pip install <--user> <--no-deps> -e .
- Any argument between <...> is optional.
- Use sudo for a root installation.
- Use user for a user installation without admin rights. It will install Theano in your local site-packages.
- Use no-deps when you don’t want the dependencies of Theano to be installed through pip. This is important when they have already been installed as system packages.
- -e makes your installation editable, i.e., it links it to your source directory.
If you encountered any trouble, head to the Troubleshooting page.
libgpuarray¶
Install the latest, development version of libgpuarray following the Step-by-step instructions.
Requirements through System Packages (not recommended)¶
sudo yum install python-devel python-nose python-setuptools gcc gcc-gfortran gcc-c++ blas-devel lapack-devel atlas-devel
sudo easy_install pip