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Content Provider | IEEE Xplore Digital Library |
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Author | Bagliesi, G. Bauerdick, L. Belforte, S. Bloom, K. Bockelman, B. Bonacorsi, D. Brew, C. D'Hondt, J. Egeland, R. Elgammal, S. Fassi, F. Fisk, I. Flix, J. Hernandez, J. M. Kadastik, M. Klem, J. Kodolova, O. Kuo, C.-M. Letts, J. Maes, J. Magini, N. Metson, S. Piedra, J. Pukhaeva, N. Qin, G. Rossman, P. Sartirana, A. Shih, J. Sonajalg, S. Teodoro, D. Trunov, A. Tuura, L. Van Mulders, P. Wildish, T. Wu, Y. Wurthwein, F. |
Copyright Year | 2008 |
Description | Author affiliation: CC-IN2P3, Lyon, France (Fassi, F.; Pukhaeva, N.) || Universidade do Estado do Rio de Janeiro (UERJ), Brasil (Teodoro, D.) || Vrije Universiteit Brussel (VUB), Belgium (D'Hondt, J.; Maes, J.; Van Mulders, P.) || Northeastern University, Boston, USA (Tuura, L.) || INFN-Pisa, Italy (Bagliesi, G.) || Helsinki Institute of Physics, Finland (Klem, J.) || Centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT), Madrid, Spain (Hernandez, J. M.) || HH Wills Physics Laboratory, Bristol, UK (Metson, S.) || INFN-CNAF, Italy (Bonacorsi, D.; Magini, N.; Sartirana, A.) || National Central University (NCU), Chung-li, Taiwan (Kuo, C.-M.) || Academia Sinica Grid Computing (ASGC), Taiwan (Qin, G.; Shih, J.) || INFN-Trieste, Italy (Belforte, S.) || Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Russia (Kodolova, O.) || Port d¿Informació Científica (PIC), UAB, Barcelona, Spain (Flix, J.) || Princeton University, USA (Wildish, T.) || National Institute of Chemical Physics and Biophysics (NICPB), Tallinn, Estonia (Kadastik, M.; Sonajalg, S.) || University of Minnesota, USA (Egeland, R.) || Fermilab, USA (Bauerdick, L.; Fisk, I.; Rossman, P.; Wu, Y.) || UCSD, La Jolla, CA USA (Letts, J.; Wurthwein, F.) || University of Nebraska-Lincoln, USA (Bloom, K.; Bockelman, B.) || Université Libre de Bruxelles (ULB), Belgium (Elgammal, S.) || Forschungszentrum Karlsruhe (FZK), Germany (Trunov, A.) || Rutherford Appleton Laboratory (RAL), Didcot, UK (Brew, C.) || MIT, Boston, USA (Piedra, J.) |
Abstract | The CMS experiment is preparing for LHC data taking in several computing preparation activities. In distributed data transfer tests, in early 2007 a traffic load generator infrastructure was designed and deployed, to equip the WLCG Tiers which support the CMS Virtual Organization with a means for debugging, load-testing and commissioning data transfer routes among CMS Computing Centres. The LoadTest is based upon PhEDEx as a reliable, scalable dataset replication system. In addition, a Debugging Data Transfers (DDT) Task Force was created to coordinate the debugging of data transfer links in the preparation period and during the Computing Software and Analysis challenge in 2007 (CSA07). The task force aimed to commission most crucial transfer routes among CMS tiers by designing and enforcing a clear procedure to debug problematic links. Such procedure aimed to move a link from a debugging phase in a separate and independent environment to a production environment when a set of agreed conditions are achieved for that link. The goal was to deliver one by one working transfer routes to Data Operations. The experiences with the overall test transfers infrastructure within computing challenges - as in the WLCG Common-VO Computing Readiness Challenge (CCRC’08) - as well as in daily testing and debugging activities are reviewed and discussed, and plans for the future are presented. |
Starting Page | 3475 |
Ending Page | 3482 |
File Size | 4154749 |
Page Count | 8 |
File Format | |
ISBN | 9781424427147 |
ISSN | 10957863 |
DOI | 10.1109/NSSMIC.2008.4775085 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-10-19 |
Publisher Place | Germany |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Collision mitigation Testing Large Hadron Collider Debugging Distributed computing Grid computing Physics Production Laboratories Nuclear and plasma sciences |
Content Type | Text |
Resource Type | Article |
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