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@ARTICLE{Arrabito:632213,
      author       = {Arrabito, Luisa and Bregeon, Johan and Faure, Alice and
                      Gueta, Orel and Pigoux, Natthan and Tsaregorodtsev, Andrei},
      title        = {{T}he {C}herenkov {T}elescope {A}rray {O}bservatory
                      workflow management system},
      journal      = {The European physical journal / Web of Conferences},
      volume       = {295},
      issn         = {2100-014X},
      address      = {Les Ulis},
      publisher    = {EDP Sciences},
      reportid     = {PUBDB-2025-02141},
      pages        = {04044},
      year         = {2024},
      abstract     = {The Cherenkov Telescope Array Observatory (CTAO) is the
                      next generation ground-based observatory for gamma-ray
                      astronomy at very high energies. It is expected to produce
                      about 2 PB of raw data each year and to manage a global data
                      volume which will grow through the years to reach about 100
                      PB in 2030. In addition, CTAO will require a high computing
                      capacity for data processing and Monte Carlo simulations, of
                      the order of hundreds of millions of CPU HS06 hours per
                      year. To meet these requirements, CTAO will adopt a
                      distributed computing model using 4 academic data centers,
                      and will use the DIRAC framework as its workload management
                      system. In the past ten years, to optimize the instrument
                      design and study its performances, CTAO has used the
                      European Grid Infrastructure (EGI) to run massive Monte
                      Carlo campaigns. In order to handle these campaigns and to
                      automatize simulation and data processing workflows, we have
                      developed a production system prototype based on DIRAC.
                      Recently, we have also developed a user interface allowing
                      for the configuration and submission of complex workflows.
                      In this contribution we present the production system
                      prototype, its user interface for workflow management as
                      well as its application to CTAO workflows.},
      month         = {May},
      date          = {2023-05-08},
      organization  = {26th International Conference on
                       Computing in High Energy $\&$ Nuclear
                       Physics, Norfolk (United States), 8 May
                       2023 - 12 May 2023},
      keywords     = {numerical calculations: Monte Carlo (INSPIRE) / observatory
                      (INSPIRE) / DIRAC (INSPIRE) / Cherenkov Telescope Array
                      (INSPIRE) / interface (INSPIRE) / Grid computing (INSPIRE) /
                      VHE (INSPIRE) / gamma ray (INSPIRE) / performance (INSPIRE)},
      cin          = {CTAO},
      ddc          = {530},
      cid          = {I:(DE-H253)CTAO-20191218},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613) /
                      DFG project G:(GEPRIS)460248186 - PUNCH4NFDI - Teilchen,
                      Universum, Kerne und Hadronen für die NFDI (460248186)},
      pid          = {G:(DE-HGF)POF4-613 / G:(GEPRIS)460248186},
      experiment   = {EXP:(DE-H253)CTA-20150101},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)16},
      doi          = {10.1051/epjconf/202429504044},
      url          = {https://bib-pubdb1.desy.de/record/632213},
}