Cylc (pronounced silk) is a general purpose workflow engine that specialises in cycling workflows and has strong scaling characteristics.

Cylc was originally developed to meet the challenges of production weather forecasting - which is notorious for the size and complexity of its workflows.

Citations & Publications

Cylc 7 (production)

Production ready.
HTTPS network layer.
PyGTK GUI.
On the 7.8.x branch in the source code.
7.8 - Python 2.6
7.9 - Python 2.7

Quick Installation | Website | Documentation

Cylc 8 (experimental)

Experimental alpha.
ZMQ (TCP) network layer.
In-browser GUI
On the master branch in the source code.

Cylc-8.0.0 will be released in 2021. Until then we recommend the latest Cylc 7 versions for production use.

Installation | Documentation - in development

Copyright and Terms of Use

Cylc is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Cylc is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Cylc. If not, see GNU licenses.

Contributing

Contributions welcome:

Read the contributing page.
Development setup instructions are in the developer docs.
Involved change proposals can be found in the admin pages.
Touch base in the developers chat.

Cylc Documentation

See The Cylc Website