Introduction

Scope and History

• Online Software (previously known as Backend Software) handles everything about the online system apart from the high speed transfer of events and event fragments (ie dataflow).
• One of the five main subprojects of ATLAS Trigger/DAQ.
• Work started about four years ago(?) as part of the DAQ/EF prototype ``-1'' project.
• Uses a fairly detailed software process.
• First public (binary) release approx early 1999.
• Became an open source project some time in 2000.
• Regular releases every few months. Latest release 0.0.15 in October.

General Impression

• A well managed project (whose leader is now leaving!)
• Plenty of (mostly good) documentation on all software components, including APIs and examples.
• Up to date training material available.