LHCb Core Software Meeting

Date and Location

10:30 - 11:35
CERN (2-R-030)


Ben Couturier, Gloria Corti, Illya Shapoval, Joel Closier, Marco Cattaneo, Marco Clemencic (minutes)



  • Gaudi Developers Meeting last Wednesday
    • mainly discussing organizational issues
    • Marco Ca.: there had been some discussion in the Computing Workshop and the Analysis and Software Week about the future developments.
      see https://etherpad.mozilla.org/LHCbcomp15
  • ATLAS organizes a Future Frameworks Workshop (LHCb is invited)
  • New release of LCG (77root6) with ROOT 6.02.10
    • we should check if we can pick up ROOT 6.04 for the July stack. Marco Ca.: we only have two weeks to commission it.
    • Marco Cl. will ask for the change in dev4 for a start
  • Joel: now that gitlab.cern.ch is in production we need to define guidelines ASAP

Round Table

Marco Cl.

  • GIT
    • Gaudi officially on gitlab.cern.ch
    • testing automatic application of merge requests in gitlab.cern.ch
  • New run stamp condition to check if the alignments and calibrations are up to date for a given run.
    • Marco Ca.: we need the IOVs for the valid runs ASAP (check with Beat)


  • Investigating the memory leaks observed in Brunel
    • Valgrind does not report anything in opt, to be tested in dbg, but the output is still
    • Manuel Schiller proposed to use Jemalloc for memory profile, which works fine (to be run regularly in LHCbPR).
  • Fixed the installation of the new platform "-do0". Need a release of LbScripts to complete the tests
  • Prepared an NFS installation of the software at the PIT, based on the SoftConfDB and RPMs
    • some features missing in lbpkr, will contact Sebastien
  • Roel reported an issue with Moore (inconsistency between CMake and CMT configuration). We may patch in place, to be seen.
  • Need to change the mechanism to check forgotten CVMFS transactions. Joel mentioned that there is an


  • Extended the CondDB deployment system to create ONLINE snapshots also when there is an update of the RunStamp condition
  • Marco Ca.: how frequent is this done?
    Illya: Every Hour.
    Should be changed to 10-15 min.


  • Issue with missing generators in a tarball, but present on CVMFS.
  • Davide Fazzini working on merging of Gauss files.


  • Prepare the GIT and Gitlab guidelines.
  • Check with Beat (or Stefan Roiser) the list of IOVs to use in the RunStamp. Marco Cl.

-- MarcoClemencic - 2015-06-17

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