LHCb Core Software Meeting

Date and Location

24 Jun 2009
10:30 - 12:00
CERN (2-R-030)


Gloria, Joel, Karol, Marco Ca., Marco Cl. (minutes), Markus, Olivier, Philippe, Stefan, Thomas



  • LCGCMT 56b essentially ready, waiting for fixes in ROOT and CORAL

Software Releases

Gaudi (Marco Cl.)

  • To be released by the end of the week, after testing it with the final LCGCMT 56b

Marco Ca.:

  • we need to have support for tcmalloc, using LD_PRELOAD (~15% improvements).
  • the linker option '-s' should be removed from the optimized builds.

LHCb, Boole, Brunel (Marco Ca.)

  • Stack released last week.
  • Next cycle next week, with the new Gaudi.

Gauss (Gloria)

  • Problems building Geant4 on SLC5 under investigation
  • We cannot use the Velo alignments/positioning in vacuum with the current way we pass the geometry to Geant4 (related to the detector element being placed in the main volume)
  • A release with support for spill-over next week.
  • We need to have an AppConfig v3 to make some backward incompatible changes.

Panoramix (Thomas)

  • Ready to be released.

Round Table

Marco Cl.
  • Initial prototype for a new CondDBBrowser based on Qt4.
  • Migration from HyperNews to e-groups completed.
  • Started a twiki page to describe the configuration of Eclipse for LHCb

  • Using a special make option for CMT to skip completely the dependencies: QUICK=2 (Gaudi >= v21r2, CMT = v1r20p20070205)
  • Testing: distcc (Joel: client updated on lxbuild), removal of link option '-s'
  • Need some more space on AFS

The compilation of ROOT 5.22 on VC9 is not fully functional, we have to wait for ROOT 5.24

  • Problems with SQLDDDB v5r8.
    Marco Cl.: first it was the new options with the old package, then the old options with the new package. In both cases is DC06, where the ONLINE partition is used instead of SIMCOND. A possible stable solution is set the initial event time to a value more adequate than the current time for DC06.
  • Status of the support of SLC4 on SLC5? Being finalized.

Where are we with the XML-based CondDB snapshots?
Marco Cl.: will be in the next LHCb release.

-- MarcoClemencic - 01 Jul 2009

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