Installation is easy. Checkout the Git repository of RETURNN (https://github.com/rwth-i6/returnn/). Install all dependencies, which are just numpy, h5py, and the backend you want to use (TensorFlow or Theano). You can do so via:
pip install -r requirements.txt
You probably want to use
pip3 instead of
and you also might want to add the option
(if you are not using
For TensorFlow, use
pip install tensorflow-gpu
pip3 install --user tensorflow-gpu)
if you have a Nvidia GPU,
and make sure that CUDA and cuDNN can be found.
For Theano, only version 0.9 works (
pip install theano==0.9).
For Theano usage, make sure that you have this in your
[global] device = cpu floatX = float32
For some specific datasets or special layers, additional dependencies might be needed,
For running the tests, you need
You can also install RETURNN as a framework, via
pip (PyPI entry),
pip install returnn
See Basic usage for the basic usage of RETURNN.