This is an unsupported branch of neon. Please switch to neon master branch for the officially released library.

neon is Nervana's Python based Deep Learning framework and achieves the fastest performance on modern deep neural networks such as AlexNet, VGG and GoogLeNet. Designed for ease-of-use and extensibility.

• Tutorials and iPython notebooks to get users started with using neon for deep learning.
• Support for commonly used layers: convolution, RNN, LSTM, GRU, BatchNorm, and more.
• Model Zoo contains pre-trained weights and example scripts for start-of-the-art models, including: VGG, Reinforcement learning, Deep Residual Networks, Image Captioning, Sentiment analysis, and more.
• Swappable hardware backends: write code once and then deploy on CPUs, GPUs, or Nervana hardware

For fast iteration and model exploration, neon has the fastest performance among deep learning libraries (2x speed of cuDNNv4, see benchmarks).

• 2.5s/macrobatch (3072 images) on AlexNet on Titan X (Full run on 1 GPU ~ 26 hrs)
• Training VGG with 16-bit floating point on 1 Titan X takes ~10 days (original paper: 4 GPUs for 2-3 weeks)

We use neon internally at Nervana to solve our customers' problems across many domains. We are hiring across several roles. Apply here!

See the new features in our latest release.

• Local install and dependencies

On a Mac OSX or Linux machine, enter the following to download and install neon (conda users see the guide), and use it to train your first multi-layer perceptron.

    git clone https://github.com/NervanaSystems/neon.git
    cd neon
    make
    . .venv/bin/activate
    neon examples/mnist_mlp.yaml
    # alternatively, use a script:
    python examples/mnist_mlp.py

The complete documentation for neon is available here. Some useful starting points are:

• Tutorials for neon
• Overview of the neon workflow
• API documentation
• Resources for neon and deep learning

For any bugs or feature requests please:

1. Search the open and closed issues list to see if we're already working on what you have uncovered.
2. Check that your issue/request hasn't already been addressed in our Frequently Asked Questions (FAQ) or neon-users Google group.
3. File a new issue or submit a new pull request if you have some code you'd like to contribute

For other questions and discussions please post a message to the neon-users Google group

We are releasing neon under an open source Apache 2.0 License. We welcome you to contact us with your use cases.