Keras：Switching from Theano backend to tensorflow

If you have run Keras at least once, you will find the Keras configuration file at:

~/.keras/keras.json

If it isn't there, you can create it.

It probably looks like this:

{"epsilon": 1e-07, "floatx": "float32", "backend": "theano"}

Simply change the field backend to either "theano" or "tensorflow", and Keras will use the new configuration next time you run any Keras code.

Pip install tensorflow

Pip is a package management system used to install and manage software packages written in Python.

The packages that will be installed or upgraded during the pip install are listed in the REQUIRED_PACKAGES section of setup.py

Install pip (or pip3 for python3) if it is not already installed:

# Ubuntu/Linux 64-bit$ sudo apt-get install python-pip python-dev# Mac OS X$ sudo easy_install pip

Install TensorFlow:

# Ubuntu/Linux 64-bit, CPU only:$ sudo pip install --upgrade https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.8.0rc0-cp27-none-linux_x86_64.whl# Ubuntu/Linux 64-bit, GPU enabled. Requires CUDA toolkit 7.5 and CuDNN v4.  For# other versions, see "Install from sources" below.$ sudo pip install --upgrade https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.8.0rc0-cp27-none-linux_x86_64.whl# Mac OS X, CPU only:$ sudo easy_install --upgrade six$ sudo pip install --upgrade https://storage.googleapis.com/tensorflow/mac/tensorflow-0.8.0rc0-py2-none-any.whl

For python3:

# Ubuntu/Linux 64-bit, CPU only:$ sudo pip3 install --upgrade https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.8.0rc0-cp34-cp34m-linux_x86_64.whl# Ubuntu/Linux 64-bit, GPU enabled. Requires CUDA toolkit 7.5 and CuDNN v4.  For# other versions, see "Install from sources" below.$ sudo pip3 install --upgrade https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-0.8.0rc0-cp34-cp34m-linux_x86_64.whl# Mac OS X, CPU only:$ sudo easy_install --upgrade six$ sudo pip3 install --upgrade https://storage.googleapis.com/tensorflow/mac/tensorflow-0.8.0rc0-py3-none-any.whl

NOTE: If you are upgrading from a previous installation of TensorFlow < 0.7.1, you should uninstall the previous TensorFlowand protobuf using pip uninstall first to make sure you get a clean installation of the updated protobuf dependency.

You can now test your installation.

参考

http://keras.io/backend/

https://github.com/tensorflow/tensorflow/blob/master/tensorflow/g3doc/get_started/os_setup.md#test-the-tensorflow-installation