ATLAS Experiment CERN

Computing System

The ATLAS computing system will be designed to analyse the data produced by the ATLAS detectors. The amount of data will be huge. To get a feeling, note that the English version of the Bible (Old and New Testament) can be stored on a floppy disk of 1.4 Megabytes. The annual ATLAS data volume would need 700 million such disks. This stack of disks reaches from Geneva to Moscow.

To analyse these data, a compute power equivalent to 50,000 of todays PCs will be needed.

The software to extract the physics results will be produced as a communal effort from many people in the ATLAS institutes. In order to ensure the required software quality, new methods for software engineering and project management will be required.

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