/exo

Run your own AI cluster at home with everyday devices 📱💻 🖥️⌚

Primary LanguagePythonGNU General Public License v3.0GPL-3.0

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exo: Run your own AI cluster at home with everyday devices. Maintained by exo labs.

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GitHub Repo stars License: GPL v3

Forget expensive NVIDIA GPUs, unify your existing devices into one powerful GPU: iPhone, iPad, Android, Mac, Linux, pretty much any device!

Get Involved

exo is experimental software. Expect bugs early on. Create issues so they can be fixed. The exo labs team will strive to resolve issues quickly.

We also welcome contributions from the community. We have a list of bounties in this sheet.

Features

Wide Model Support

exo supports LLaMA (MLX and tinygrad) and other popular models.

Dynamic Model Partitioning

exo optimally splits up models based on the current network topology and device resources available. This enables you to run larger models than you would be able to on any single device.

Automatic Device Discovery

exo will automatically discover other devices using the best method available. Zero manual configuration.

ChatGPT-compatible API

exo provides a ChatGPT-compatible API for running models. It's a one-line change in your application to run models on your own hardware using exo.

Device Equality

Unlike other distributed inference frameworks, exo does not use a master-worker architecture. Instead, exo devices connect p2p. As long as a device is connected somewhere in the network, it can be used to run models.

Exo supports different partitioning strategies to split up a model across devices. The default partitioning strategy is ring memory weighted partitioning. This runs an inference in a ring where each device runs a number of model layers proportional to the memory of the device.

ring topology

Installation

The current recommended way to install exo is from source.

Prerequisites

From source

git clone https://github.com/exo-explore/exo.git
cd exo
pip install .
# alternatively, with venv
source install.sh

Troubleshooting

  • If running on Mac, MLX has an install guide with troubleshooting steps

Documentation

Example Usage on Multiple MacOS Devices

Device 1:

python3 main.py

Device 2:

python3 main.py

That's it! No configuration required - exo will automatically discover the other device(s).

The native way to access models running on exo is using the exo library with peer handles. See how in this example for Llama 3.

exo also starts a ChatGPT-compatible API endpoint on http://localhost:8000. Note: this is currently only supported by tail nodes (i.e. nodes selected to be at the end of the ring topology). Example request:

curl http://localhost:8000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
     "model": "llama-3-70b",
     "messages": [{"role": "user", "content": "What is the meaning of exo?"}],
     "temperature": 0.7
   }'

curl -X POST http://localhost:8001/api/v1/chat -H "Content-Type: application/json" -d '{"messages": [{"role": "user", "content": "What is the meaning of life?"}]}'

Debugging

Enable debug logs with the DEBUG environment variable (0-9).

DEBUG=9 python3 main.py

Known Issues

  • 🚧 As the library is evolving so quickly, the iOS implementation has fallen behind Python. We have decided for now not to put out the buggy iOS version and receive a bunch of GitHub issues for outdated code. We are working on solving this properly and will make an announcement when it's ready. If you would like access to the iOS implementation now, please email alex@exolabs.net with your GitHub username explaining your use-case and you will be granted access on GitHub.

Inference Engines

exo supports the following inference engines:

Networking Modules