GIOD - Database of “real” LHC events

  • Would like to evaluate system performance with realistic Event objects

  • Caltech/HEP submitted a successful proposal to NPACI to generate ~1,000,000 fully-simulated multi-jet QCD events

    • Directly study Higgs ? ?? backgrounds for first time
    • Computing power of Caltech’s 256-CPU (64 Gbyte shared memory) HP-Exemplar makes this possible in ~few months
  • Event production on the Exemplar since May ‘98 ~ 1,000,000 events of 1 MByte.

  • Used by GIOD as copious source of “raw” LHC event data

  • Events are analysed using Java Analysis Studio and “scanned” using a Java applet

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