LHCb Core Software Meeting

Date and Location

10:30 - 11:00
CERN (2-R-030)


Ben Couturier, Gloria Corti, Illya Shapoval, Joel Closier, Liang Sun, Marco Cattaneo, Marco Clemencic (minutes), Markus Frank, Stefan Lohn



  • HLT Workshop in Amsterdam tomorrow
  • LHCb Analysis and Software Week next week (no Core Software Meeting)
    • Tuesday afternoon on software
    • Friday morning on Upgrade etc.
  • Summer Students Projects (deadline for Monica: Thursday 7 Feb. 2013)
  • Fermilab Multicore Meeting in two weeks time
    • Nathalie is presenting next Friday her contribution for the workshop
    • Marco Cl. will do it too
  • ROOT Workshop
    • Conor will collect suggestions from analyzers and will need a rehearsal
    • Ben will report on Core Software needs for ROOT 6 (may be mentioning the memory problems we experienced in the past)

Round Table

Marco Cl.

  • Preparing an internal note describing the new Nightly Build System prototype(LHCb-INT-2013-006).
  • Working on the slides on Core Software for the A&S Week.
  • Next release of Gaudi due by the end of this week, beginning of the next, to be ready for the new LHCb stack
    • it will use LCGCMT 64c
    • Ben: we can build SLC6 gcc 4.6
    • do we drop i686? yes
  • Fixed the issue with GiGaCnv compilation on gcc46. Gauss now compiles on gcc46.


  • Released LbScripts v7r6 as dev (new project Urania and new packages).
  • Can run Django applications on IT infrastructure via FCGI.
  • Working on the installation of Jenkins on lxbuild173
  • Discussion with Rob about test coverage. Will start to work on it.
  • On deployment shift next week, so can update savannah and the documentation.


  • New LHCbDIRAC service based on v6r6 series of DIRAC


  • Tried to compile Moore on several compilers, including gcc 4.7. We should try to compile on clang, etc.


  • There has been a discussion on some calibrations for improved momentum resolution, but with shifting baseline depending on the magnet polarity. Marco Ca. suggested to use a mechanism like the one for the magnetic field service. Now waiting for progress on the developers side.

-- MarcoClemencic - 23-Jan-2013

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