Impressions some relevant to GLAST from the CHEP 2000 conference

1
Impressions (some relevant to GLAST) from the
CHEP 2000 conference

• Toby Burnett
• GLAST software telecon 17-Feb-2000

2
Some over-all impressions

• Object-oriented databases are passé
• In spite of success of Objectivity in Babar
• No convincing need, compared with RDB and files
• Most experiments adopt the transient/persistent
  model for data
• Open source is the coming thing for HEP software
• Geant4 is stable and accepted (used by ESA)
• ROOT is everywhere at least three roles
• Framework/GUI everything inherits from Tobject
  (Alice, )
• I/O only (CDF, LHCb/Gaudi)
• Ntuple analysis only (CDF, D0)
• Almost no NT
• Another bandwagon Data Grids

3
CMT

• Fairly good talk (for him) by Christian Arnout
• Many discussions with Christian and Guy Barrand
  (colleague who supports it, will use it)

4
Gaudi

• Contact with Per Mato, chief architect

5
Data Grids

• What are they (NASA has one)
• Particle Physics Data Grid funded (1.2M, 1 yr.)
• PPDG components perhaps of interest to us
• Condor
• SAM