1. August 98 1 Jürgen Knobloch ATLAS Software Workshop Ann Arbor ATLAS Computing Planning ATLAS Software Workshop August 1998 Jürgen Knobloch Slides also on: http://nicewww.cern.ch/atlas/wwwslides/SWplanAA/index.htm

2. August 98 2 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Offline Software Plan

3. August 98 3 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Definition of milestones Ingredients:  Milestones given in CTP  OO reconstruction and simulation - first version available end 99  Full chain operational on subset of final infrastructure - 1 year before LHC start-up  Coverage of interim needs –Physics studies –Test beam support –Radiation level studies

4. August 98 4 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Milestones - 1 General Test full chain in real environment7/04 Decide on first production OS7/03 Revisit development environment7/00 Install test and verification procedure4/99 Assess development resources4/99 Analysis Analysis requirements collected11/98 Evaluate analysis environment for interim period3/99 Evaluate analysis environment for production period7/02 Implement analysis environment for production period7/02

5. August 98 5 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Milestones - 2 Event storage Define raw data structure12/98 GEANT3 events in ObjDB8/98 GEANT4 events in ObjDB7/99 Provide DB performance report7/00 Decide on database vendor6/01 Define initial version of ESD7/99 Define initial version of event tag7/99 Define initial version of AOD7/99

6. August 98 6 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Milestones - 3 Simulation ATLAS simulation domains defined9/98 GEANT4 test beam simulations3/99 Terminate maintenance DICE3/01 First general OO simulation available12/99 Define event generator interface1/99 Simulation framework available1/99 Single particles from G4 in ARVE1/99 Simulation geometry available7/99 Minimum bias overlay5/00

7. August 98 7 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Milestones - 4 Reconstruction version 1 First complete OO reconstruction12/99 Reconstruction geometry available3/99 Prepare data12/98 Find tracks2/99 Find ID tracks2/99 Find muon tracks4/99 Find global tracks7/99 Find cal clusters5/99 Calorimeter Calibration4/99 Muon Spectrometer alignment7/98 Inner Detector Alignment7/99 Event display prototype7/99

8. August 98 8 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Milestones - 5 Infrastructure Conclude study on regional centres11/99 Define financing of computing at CERN10/99 Define scope of regional centres11/99 1 Tbyte database prototype12/98 100 Tbyte database prototype12/03 Full database available12/04 1% processing farm prototype12/02 5% processing farm12/03 40% processing farm12/04 100% processing farm6/05

9. August 98 9 Jürgen Knobloch ATLAS Software Workshop Ann Arbor Next  Add missing topics  Provide more detailed description  Identify people responsible for each milestone  Agree on the dates for the milestones  For the milestones due in the next 10 months: –Define intermediate milestones –Assess resources needed/available –Define regular monitoring mechanism