LHCb Core Software Meeting

Date and Location

12 Mar 2014
10:30 - 11:05
CERN (2-R-030)


Anastasia Karachaliou, Ben Couturier, Gloria Corti, Illya Shapoval, Joel Closier, Liang Sun, Marco Clemencic (minutes)



  • Massive failure of the nightly builds
    • problem to the testing of the new LCGCMT layout, which was picked up by mistake.
  • Concurrency Forum Meeting (request for contributions

Round Table

Marco Cl.

  • Testing LCGCMT new structure
  • ROOT 6
    • unstable in the last few days, but we have a chance of getting a tag before the weekend


  • Created virtual machine with 500GB of disc,
  • LHCbDirac ready to move to Python 2.7
    • still issues with the way middleware libs are built (problems with the externals)
  • PID Calibration required disc space to store ~100 GB of calibration data. They asked for AFS, but they will get a storage element (EOS space).


  • The shutdown of Neo4J was not a clean one, triggering a bug in Neo4J that caused the explosion of the number of entities. In any case there was no corruption.


  • Issue with the build of Geant4 examples (clashes of file names), Marco Cl. will look into it to prepare a prototype requirements.
  • G4 examples are needed to run regularly tests to be published to LHCbPR.
  • Next week there is the LPCC workshop.
    • Paul will present our plans for Geant4 10 and multithreading
  • Marco Cl.: added handling of platform-independent generated files in the nightlies (only for Geant4 and DecFiles)


  • Provided Benedikt with a script to generate the RPMs we can install. Being tested.
  • Working on the packaging as RPMs of our projects.
  • Testing of CVMFS server is going well:
    • it nicely handled disc full
    • we need a garbage collection on stratum-0, to remove the history (developers are working on it)
    • we should move to production for the nightly builds installation


  • Working on the CondDB setup for the split Hlt.


  • Going through documentation and tutorials.

-- MarcoClemencic - 12 Mar 2014

This topic: LHCb > WebHome > LHCbComputing > CoreSoftwareMeetingMinutes > CoreSoftwareMeetingMinutes20140312
Topic revision: r1 - 2014-03-12 - MarcoClemencic
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