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ALICE Software Status and Progress

by Bj ørn S. Nilsen The Ohio State University. ALICE Software Status and Progress. Content. Offline Software Status AliRoot Computing Environment Status AliEn Computing Infrastructure Status Hardware. Offline Status. Simulation

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ALICE Software Status and Progress

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  1. by Bjørn S. Nilsen The Ohio State University ALICE SoftwareStatus and Progress

  2. Content • Offline Software Status AliRoot • Computing Environment Status AliEn • Computing Infrastructure Status Hardware

  3. Offline Status • Simulation • Still using Geant3 but with TGeo modeler • use of Fluka coming soon • use of Geant4 no activity • Event merging actively in use • Data in Raw format produced and used in MDC • All approved detectors actively in use • EMCAL simulation usable ? • ACORDE simulation missing

  4. Offline Status • Reconstruction • Full tracking and PID • Calibration Correction/Class' • Detector Alignment • Analysis • Analysis structure developed • Most analysis code in private forms

  5. Computing EnvironmentAliEn • Version 2 recently released • Integrated into ROOT • gShell usable • Interactive analysis capable • Still debugging • Fully integrated with EGEE Grid developments • Uses globus and/or ssh/ • OSG/iVDgL/PPDG/GryPhyN - US grid? • Works Stand-Alone in user accounts • Gives all ALICE users full access to data • Used for ALICE production for 3 Years • Extremely Poor Documentation

  6. Computing Infrastructure • Good estimate of needed Resources • Resources being supplies in Tier structure • 7 Tier-1 Centers assumed (CERN + 6 External) CERN, Italy, France, Germany,Nordic Countries, The Netherlands, United Kingdom, US. • Many Tier-2 Centers Italy, Germany, Russia, Mexico, India, .... • Nordic Countries and US are not Tier structured (Cloud or Grid) • Still ALICE has only about ½ of what it needs • Countries delivering based on number of investigators ALICE ~ ½ ATLAS or CMS • ALICE Data volume similar to ATLAS or CMS

  7. Computing InfrastructureUS? • NERSC, University of Huston, and OSC have been suppling Resources to ALICE already. • OSC committed to suppling Tier-2 like resources in any eventuality • P. Buerger (OSC), T. Humanic (OSU), S. L. Johnsson & L. Pinsky (UH) just submitted NSF proposal for 137% <Tier-1ALICE> to be placed 50% at OSC and 50% at UH.

  8. Computing NSF-US • 2836 kSpecInt2k of cpu • 1.7 PBytes of Disk • 1.6 PBytes of Tape or equivalent • 1.25 FTE each site • 0.25 to support hardware/OS • 1 to support ALICE, and Grid software • Space, Power, Cooling, & Network – free • Matching • UH $250,000 manpower @ UH • OSC $311,420 for hardware @ OSC • Ohio Board of Regents $311,420 for hardware @ OSC • Total Cost $1,895,816 / $2,814,01567%

  9. Conclusion • 1.5 Years before 1st Beam • AliRoot; not too bad, could be better. • AliEn; using Grid in a grid like environment. • Computing Resources; only ½ of the needed resources have been committed. • Much hard work still to come

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