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Paper: A DIRAC-based Prototype for the Cherenkov Telescope Array Data Management, Processing and Simulations
Volume: 527, Astronomical Data Analysis Software and Systems XXIX
Page: 339
Authors: Arrabito, L.; Bregeon, J.
Abstract: The Cherenkov Telescope Array (CTA) is the next–generation instrument in the field of very–high–energy gamma–ray astronomy. It will be composed of two arrays of Imaging Atmospheric Cherenkov Telescopes, located at La Palma (Spain) and Paranal (Chile). The construction of CTA has just started with the installation of the first telescope on site at La Palma. The scientific operations should begin in 2022 and continue for a duration of about thirty years. The overall amount of data produced during these operations is expected to be about 27 PB per year. The associated computing power for data processing and Monte Carlo (MC) simulations is of the order of hundreds of millions of CPU HS06 hours per year. In order to cope with these large computing requirements, we have developed a production system prototype based on the DIRAC framework, that we have intensively exploited during the past six years to handle massive MC simulations on the grid needed for the CTA design and prototyping phases. In this contribution we present the different DIRAC systems in use in our prototype for the workload and data management.
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