1. 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 The VO auger manager

2. www.egi.eu EGI-InSPIRE RI-261323 Overview PAO Motivations for the grid computing Production experience VRC 29.3.2012 Jiri.Chudoba@cern.ch2

3. www.egi.eu EGI-InSPIRE RI-261323 Ultra High Energy Cosmic Rays 29.3.2012 Jiri.Chudoba@cern.ch3

4. www.egi.eu EGI-InSPIRE RI-261323 Pierre Auger Observatory 29.3.2012 Jiri.Chudoba@cern.ch4 1 600 detectors 3 000 km 2

5. www.egi.eu EGI-InSPIRE RI-261323 Pierre Auger Observatory 29.3.2012 Jiri.Chudoba@cern.ch5

6. www.egi.eu EGI-InSPIRE RI-261323 Results 29.3.2012 Jiri.Chudoba@cern.ch6

7. www.egi.eu EGI-InSPIRE RI-261323 Jiri.Chudoba@cern.ch 7 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 29.3.2012

8. www.egi.eu EGI-InSPIRE RI-261323 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 29.3.2012 Jiri.Chudoba@cern.ch8 NB: No real data on the grid – local sites (CCIN2P3 and Fermilab) are sufficient

9. www.egi.eu EGI-InSPIRE RI-261323 Usage – Top 10 in 2011 29.3.2012 Jiri.Chudoba@cern.ch9 VO auger was the biggest EGI grid user after the 4 LHC VOs

10. www.egi.eu EGI-InSPIRE RI-261323 Usage – AA cluster in 2011 29.3.2012 Jiri.Chudoba@cern.ch10 Credits: Production team from Granada university CESNET – running central services (VOMS, LFC) Sites and site admins – provide resources

11. www.egi.eu EGI-InSPIRE RI-261323 Similar results in 2012 29.3.2012 Jiri.Chudoba@cern.ch11

12. www.egi.eu EGI-InSPIRE RI-261323 Storage 29.3.2012 Jiri.Chudoba@cern.ch12 Gstat value: 2 PB Real value: 300 TB

13. www.egi.eu EGI-InSPIRE RI-261323 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 29.3.2012 Jiri.Chudoba@cern.ch13

14. www.egi.eu EGI-InSPIRE RI-261323 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 29.3.2012 Jiri.Chudoba@cern.ch14

15. www.egi.eu EGI-InSPIRE RI-261323 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 29.3.2012 Jiri.Chudoba@cern.ch15

16. www.egi.eu EGI-InSPIRE RI-261323 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) 29.3.2012 Jiri.Chudoba@cern.ch16