ATLAS Software Documentation

Here you can find tutorials and guides written and reviewed by experts. These pages contain structured software documentation, and exist in addition to the Computing TWiki [internal].

New to ATLAS?
Have you just joined ATLAS and want to know more about the software? These links will help you to get started:

• Have a look at the Introduction to the ATLAS software
• Read about Athena releases
• Run the AthenaExamples to familiarise yourself with Athena
• Subscribe to the ATLAS software e-group [internal]

If you would like some more general introductions to software development for research, take a look at the High Energy Physics Software Foundation training pages.

Need help getting started with physics analysis software?
Follow the complete Analysis Software Tutorial, or jump directly to the introduction of the Common CP Algorithms.

Or are you here to analyse the ATLAS open data?
If so, go to the ATLAS Open Data portal.

Starting work on ATLAS software?
Are you beginning an ATLAS software task? Read the introductory links above and then:

• read about Athena nightly builds
• follow the Git workflow documentation

Experienced developer?
These links may be helpful:

• Athena GitLab repository
• Athena on LXR
• Doxygen pages
• Releases
• Nightly build status [internal]
• Nightly runtime tests (ART) status [internal]
• Nightly build comparison tool
• ATLAS C++ coding guidelines
• ATLAS Distributed Computing
• Creating a personal Virtual Machine

Questions or problems?

• Look at the Asking Questions page for guidance on where to post a question, or see the Issue Reporting page.
• For comments and suggestions on this documentation, use the issue tracker or follow the contribution guide to improve the documentation yourself.