B. Simmons
University College London
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Publication
Featured researches published by B. Simmons.
Journal of Physics: Conference Series | 2010
S. Albrand; N. Amram; K. M. Black; K. Ciba; A. De Salvo; J. Fulachier; M. V. Gallas Torreira; S. J. Haywood; Vivek Jain; I Kachaev; F. Lambert; S. L. Lloyd; F. Luehring; E. J. W. Moyse; E. Obreshkov; A Pacheco Page; D. R. Quarrie; G Rybkine; P. Sherwood; B. Simmons; A. S. Thompson; A. Undrus; H. von der Schmitt; S. Youssef; O. Zenin
We update our CHEP06 [2] presentation on the ATLAS experiment software infrastructure used to build, validate, distribute, and document the ATLAS offline software. The ATLAS collaborations computational resources and software developers are distributed around the globe in about 35 counties. The ATLAS offline code base is currently over 7 million source lines of code in 10,000+ C++ classes organized into about 2,000 packages. More than 400 developers contribute code each month. Since our last report, we have developed a powerful, flexible system to request code versions to be included in software builds, made changes to our software building tools, increased the number of daily builds used to validate significant code changes, improved the tools for distributing the code to our computational sites around the world, and made many advancements in the tools to document the code.
In: Gruntorad, J and Lokajicek, M, (eds.) (Proceedings) 17th International Conference on Computing in High Energy and Nuclear Physics (CHEP). IOP PUBLISHING LTD (2010) | 2010
B. Simmons; P. Sherwood; Krzysztof Ciba; A. Richards
The ATLAS experiments RunTimeTester (RTT) is a software testing framework into which software package developers can plug their tests, have them run automatically, and obtain feedback via email and the web. The RTT processes the ATLAS nightly build releases, using acron to launch runs on a dedicated cluster at CERN, and submitting user jobs to dedicated LSF batch queues. Running computationally longer tests, up to 24 hours long, it is thus complementary to the ATLAS ATN framework which feeds back rapidly on few event tests run directly on ATLAS build machines.
Journal of Physics: Conference Series | 2012
Mark Hodgkinson; R. Seuster; B. Simmons; David Rousseau; P. Sherwood
The ATLAS collaboration operates an extensive set of protocols to validate the quality of the offline software in a timely manner. This is essential in order to process the large amounts of data being collected by the ATLAS detector in 2011 without complications on the offline software side. We will discuss a number of different strategies used to validate the ATLAS offline software; running the ATLAS framework software, Athena, in a variety of configurations daily on each nightly build via the ATLAS Nightly System (ATN) and Run Time Tester (RTT) systems; the monitoring of these tests and checking the compilation of the software via distributed teams of rotating shifters; monitoring of and follow up on bug reports by the shifter teams and periodic software cleaning weeks to improve the quality of the offline software further.
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