Ray is a unified framework for scaling AI and Python applications. Ray consists of a core distributed runtime and a toolkit of libraries (Ray AIR) for simplifying ML compute:
Learn more about Ray AIR and its libraries:
- Datasets: Distributed Data Preprocessing
- Train: Distributed Training
- Tune: Scalable Hyperparameter Tuning
- RLlib: Scalable Reinforcement Learning
- Serve: Scalable and Programmable Serving
Or more about Ray Core and its key abstractions:
- Tasks: Stateless functions executed in the cluster.
- Actors: Stateful worker processes created in the cluster.
- Objects: Immutable values accessible across the cluster.
Ray runs on any machine, cluster, cloud provider, and Kubernetes, and features a growing ecosystem of community integrations.
Install Ray with: pip install ray. For nightly wheels, see the
Installation page.
Why Ray?
Today's ML workloads are increasingly compute-intensive. As convenient as they are, single-node development environments such as your laptop cannot scale to meet these demands.
Ray is a unified way to scale Python and AI applications from a laptop to a cluster.
With Ray, you can seamlessly scale the same code from a laptop to a cluster. Ray is designed to be general-purpose, meaning that it can performantly run any kind of workload. If your application is written in Python, you can scale it with Ray, no other infrastructure required.
More Information
- Documentation
- Ray Architecture whitepaper
- Exoshuffle: large-scale data shuffle in Ray
- Ownership: a distributed futures system for fine-grained tasks
- RLlib paper
- Tune paper
Older documents:
Getting Involved
| Platform | Purpose | Estimated Response Time | Support Level |
|---|---|---|---|
| Discourse Forum | For discussions about development and questions about usage. | < 1 day | Community |
| GitHub Issues | For reporting bugs and filing feature requests. | < 2 days | Ray OSS Team |
| Slack | For collaborating with other Ray users. | < 2 days | Community |
| StackOverflow | For asking questions about how to use Ray. | 3-5 days | Community |
| Meetup Group | For learning about Ray projects and best practices. | Monthly | Ray DevRel |
| For staying up-to-date on new features. | Daily | Ray DevRel |