Www.egi.eu EGI-InSPIRE RI-261323 EGI-InSPIRE www.egi.eu EGI-InSPIRE RI-261323 Pierre Auger Observatory Jiří Chudoba Institute of Physics and CESNET, Prague.

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Presentation transcript:

EGI-InSPIRE RI EGI-InSPIRE EGI-InSPIRE RI Pierre Auger Observatory Jiří Chudoba Institute of Physics and CESNET, Prague The VO auger manager

EGI-InSPIRE RI Overview PAO Motivations for the grid computing Production experience VRC

EGI-InSPIRE RI Ultra High Energy Cosmic Rays

EGI-InSPIRE RI Pierre Auger Observatory detectors km 2

EGI-InSPIRE RI Pierre Auger Observatory

EGI-InSPIRE RI Results

EGI-InSPIRE RI Pierre Auger Observatory Collaboration About 500 members from more than 111 institutes from 18 countries Participating countries: Argentina, Australia, Bolivia, Brazil, Czech Republic, France, Germany, Italy, Mexico, Netherlands, Poland, Portugal, Slovenia, Spain, United Kingdom, USA and Vietnam

EGI-InSPIRE RI Motivations for the GRID Monte Carlo simulations of showers CORSIKA program with several models Tens of CPU hours for highest energies Different energy bins, angles, models, chemical composition Simulated data distribution Uniform access to resources Increase available resources NB: No real data on the grid – local sites (CCIN2P3 and Fermilab) are sufficient

EGI-InSPIRE RI Usage – Top 10 in VO auger was the biggest EGI grid user after the 4 LHC VOs

EGI-InSPIRE RI Usage – AA cluster in Credits: Production team from Granada university CESNET – running central services (VOMS, LFC) Sites and site admins – provide resources

EGI-InSPIRE RI Similar results in

EGI-InSPIRE RI Storage Gstat value: 2 PB Real value: 300 TB

EGI-InSPIRE RI Experience Many job slots available Storage shortage Overfilling of some sites High level tools were missing Now we have second generation of custom tools for semiautomatic production Reliability increases Requires continuous effort Site admins ask for a membership

EGI-InSPIRE RI Experience Grid access too complicated for some users Certificate; UI ready for all VO users; Certificate change – file ownership problem Copies of output files also available via SRB, accessible with the local account in CC IN2P3 Some users very active Lots of jobs, lots of small files 3 day sw tutorial planned for June in Prague grid tutorial included

EGI-InSPIRE RI Expectations from the VRC Forum for placing requirements Better documentation (from both sides) Custom procedures SLA with sites, different policies Additional manpower for solving concrete problems Easier negotiations with sites

EGI-InSPIRE RI Signing the VRC PAO management in favour Suggested MoU relatively “heavy” many topics, many contact persons several persons found within the collaboration Cooperation with other AA projects welcome (Corsika simulations planned by more projects)