NVIDIA NeMo

Introduction

NeMo is a toolkit for creating Conversational AI applications.

NeMo product page.

Introductory video.

The toolkit comes with extendable collections of pre-built modules and ready-to-use models for Automatic Speech Recognition (ASR), Natual Language Processing (NLP) and Text-to-Speech (TTS).

Built for speed, NeMo can utilize NVIDIA's Tensor Cores and scale out training to multiple GPUs and multiple nodes.

Requirements

1. Python 3.6, 3.7 or 3.8
2. Pytorch 1.7.1. WARNING: This version currently does not support Pytorch 1.8.0
3. NVIDIA GPU for training

Documentation

Version	Status	Description
Latest		Documentation of the latest (i.e. main) branch.
Next		Documentation of the most recent release: r1.0.0rc1
Stable		Documentation of the stable (i.e. stable) branch.

Tutorials

A great way to start with NeMo is by checking one of our tutorials.

Getting help with NeMo

FAQ can be found on NeMo's Discussions board. You are welcome to ask questions or start discussions there.

Installation

Pip

Use this installation mode if you want the latest released version.

apt-get update && apt-get install -y libsndfile1 ffmpeg
pip install Cython
pip install nemo_toolkit['all']==1.0.0rc1

Pip from source

Use this installation mode if you want the a version from particular GitHub branch (e.g main).

apt-get update && apt-get install -y libsndfile1 ffmpeg
pip install Cython
python -m pip install git+https://github.com/NVIDIA/NeMo.git@{BRANCH}#egg=nemo_toolkit[all]

From source

Use this installation mode if you are contributing to NeMo.

apt-get update && apt-get install -y libsndfile1 ffmpeg
git clone https://github.com/NVIDIA/NeMo
cd NeMo
./reinstall.sh

Docker containers:

The easiest way to start training with NeMo is by using NeMo's container. It has all requirements and NeMo 1.0.0b3 already installed.

docker run --gpus all -it --rm --shm-size=8g \
-p 8888:8888 -p 6006:6006 --ulimit memlock=-1 --ulimit \
stack=67108864 --device=/dev/snd nvcr.io/nvidia/nemo:1.0.0b3

If you chose to work with main branch, we recommend using NVIDIA's PyTorch container version 20.11-py3 and then installing from GitHub.

docker run --gpus all -it --rm -v <nemo_github_folder>:/NeMo --shm-size=8g \
-p 8888:8888 -p 6006:6006 --ulimit memlock=-1 --ulimit \
stack=67108864 --device=/dev/snd nvcr.io/nvidia/pytorch:20.11-py3

Examples

Many example can be found under "Examples" folder.

Contributing

We welcome community contributions! Please refer to the CONTRIBUTING.md CONTRIBUTING.md for the process.

License

NeMo is under Apache 2.0 license.