ray/doc/source/installation.rst

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Installing Ray
==============
Ray should work with Python 2 and Python 3. We have tested Ray on Ubuntu 14.04, Ubuntu 16.04, Ubuntu 18.04,
MacOS 10.11, 10.12, 10.13, and 10.14.
Latest stable version
---------------------
You can install the latest stable version of Ray as follows.
.. code-block:: bash
pip install -U ray # also recommended: ray[debug]
Trying snapshots from master
----------------------------
Here are links to the latest wheels (which are built off of master). To install these wheels, run the following command:
.. code-block:: bash
pip install -U [link to wheel]
=================== ===================
Linux MacOS
=================== ===================
`Linux Python 3.7`_ `MacOS Python 3.7`_
`Linux Python 3.6`_ `MacOS Python 3.6`_
`Linux Python 3.5`_ `MacOS Python 3.5`_
`Linux Python 2.7`_ `MacOS Python 2.7`_
=================== ===================
.. _`Linux Python 3.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp37-cp37m-manylinux1_x86_64.whl
.. _`Linux Python 3.6`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp36-cp36m-manylinux1_x86_64.whl
.. _`Linux Python 3.5`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp35-cp35m-manylinux1_x86_64.whl
.. _`Linux Python 2.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp27-cp27mu-manylinux1_x86_64.whl
.. _`MacOS Python 3.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp37-cp37m-macosx_10_6_intel.whl
.. _`MacOS Python 3.6`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp36-cp36m-macosx_10_6_intel.whl
.. _`MacOS Python 3.5`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp35-cp35m-macosx_10_6_intel.whl
.. _`MacOS Python 2.7`: https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev1-cp27-cp27m-macosx_10_6_intel.whl
Building Ray from source
------------------------
If you want to use the latest version of Ray, you can build it from source.
Below, we have instructions for building from source for both Linux and MacOS.
Dependencies
~~~~~~~~~~~~
To build Ray, first install the following dependencies. We recommend using
`Anaconda`_.
.. _`Anaconda`: https://www.continuum.io/downloads
For Ubuntu, run the following commands:
.. code-block:: bash
sudo apt-get update
sudo apt-get install -y build-essential curl unzip psmisc
# If you are not using Anaconda, you need the following.
sudo apt-get install python-dev # For Python 2.
sudo apt-get install python3-dev # For Python 3.
pip install cython==0.29.0
For MacOS, run the following commands:
.. code-block:: bash
brew update
brew install wget
pip install cython==0.29.0
If you are using Anaconda, you may also need to run the following.
.. code-block:: bash
conda install libgcc
Install Ray
~~~~~~~~~~~
Ray can be built from the repository as follows.
.. code-block:: bash
git clone https://github.com/ray-project/ray.git
# Install Bazel.
ray/ci/travis/install-bazel.sh
cd ray/python
pip install -e . --verbose # Add --user if you see a permission denied error.
Alternatively, Ray can be built from the repository without cloning using pip.
.. code-block:: bash
pip install git+https://github.com/ray-project/ray.git#subdirectory=python
Test if the installation succeeded
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To test if the installation was successful, try running some tests. This assumes
that you've cloned the git repository.
.. code-block:: bash
python -m pytest -v python/ray/tests/test_mini.py
Cleaning the source tree
~~~~~~~~~~~~~~~~~~~~~~~~
The source tree can be cleaned by running
.. code-block:: bash
git clean -f -f -x -d
in the ``ray/`` directory. Warning: this command will delete all untracked files
and directories and will reset the repository to its checked out state.
For a shallower working directory cleanup, you may want to try:
.. code-block:: bash
rm -rf ./build
under ``ray/``. Incremental builds should work as follows:
.. code-block:: bash
pushd ./build && make && popd
under ``ray/``.