1. LCG Generator Meeting, December 11 th 2003 Introduction to the LCG Generator Monthly Meeting

2. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division Work Packages and Milestones  WP1: GENERATOR LIBRARY  GENSER Beta (was released on schedule end September 2003)  New version soon mostly to update SCRAM configuration (I.Seluzhenkov)  First C++ Generator in GENSER (end 2003)  Delayed  Feasibility study for Sherpa inclusion (F.Krauss, S. Makarychev)  LHAPDF in GENSER (end January 2004)  Make available Fermilab v. (W.Giele) or wait for Durham v. (M.R.Walley) ?  COMPHEP, ALPGEN and EVTGEN in GENSER (end March 2004)  Some activity already for ALPGEN (F.Ambroglini) and COMPHEP (A.Sherstnev) inclusions.

3. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division Work Packages and Milestones  WP2: STORAGE, EVENT INTERFACES AND PARTICLE SERVICES  Agreement on formats for common samples (end February 2003)  Recent and Future LCG Generator Meetings dedicated to this topic  HepMC evaluation (?)  LCG ressources not identified yet. Keep in touch with CLHEP.  WP3: COMMON EVENT FILES, EVENT DATA BASE  MCDB in production in the LCG environment (end April 2004)  New project starting (L.Dudko)  Proposal for event production environment (end May 2004)  Will be based on existing tools from LHC simulation frameworks  WP4: TUNING AND VALIDATION OF EVENT GENERATORS  HIJING debug&validation  Recent activity in this area (V.Uzhinsky)  Proposal for validation framework (end June 2004)  Will be based on existing tools: JetWeb and MC-Tester

4. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division MC4LHC Feedbacks  LCG Generator activity and Milestones approved.  It is recommended to improve the collaboration with the MC authors.  The turn over and the possible loss of well trained people can represent a big problem as the experiments will soon rely on GENSER.

5. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division WEB pageWEB page: http://lcgapp.cern.ch/project/simu/generator -- links to relevant documents and to CVS repository CDS Agenda HomeCDS Agenda Home > Projects > LHC Computing Grid > Physics GeneratorsProjectsLHC Computing GridPhysics Generators -- minutes of meetings, slides of presentations Applications area mailing list: project-lcg-simu@cern.ch Meetings: -- Kick off meeting in June (mini-workshop) -- During MC4LHC workshop (in July) -- Last Thursday of the month at 5 PM in 32-1-A24 (VRVS connection in Desert or in Island room) -- December meeting anticipated becouse of Chritstmas holidays -- Workshop with authors in March 2004 (dates not defined yet) Organisational Issues

6. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division BACKUP

7. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division GENSER: Progress Report  GENSER was the first repository in the Simulation project  Complete migration of MCDB  Inclusion of the Top priority packages has been achieved  Convenient «compact» distribution.  Guaranteed installation on all the LCG supported platforms.  MC structure just automatically reorganised using macros, end users can patch the code.  Safe Double Versioning (Package*Subpackage)  GENSER BETA release available end september 2003 GENSER BETA  Documentation: http://lcgapp.cern.ch/project/simu/generator  GENSER is distributed in /afs/cern.ch/sw/lcg/app/releases/GENSER  Currently tested by ALICE, ATLAS and CMS  first user reports (from A. Moersch, G. Stavropolous, F. Moortgat).  Package versions agreed by contact persons in MC projects and/or by the volunteered beta testers.  Simple procedure to include additional versions and bug fixes.

8. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division Are the MC packages inside or outside the LCG generator repository ?  There are two possibilities for the MC generator packages. 1) To fully store the MC generator code in GENSER defining the corresponding sub-package. 2) To install the MC generator as external software packages in the LCG environment and to store in GENSER just tests suites and other related code (examples etc.). Just a technical issue! For each MC package an ad-hoc solution should be found taking into account the user requirements

9. LCG Generator Meeting, December 11 th 2003P.Bartalini – CERN EP division Between Two Worlds  Small TH groups  Old/Huge Fortran packages still in development  Cannot spend all the time to give user support  Large Experiments  C++ Frameworks  Challenging requirements