LHCb Core Software Meeting

Date and Location

01 Oct 2014
10:30 - 11:50
CERN (2-R-030)


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



  • ROOT 6.02/00 tagged
    • still issues for us: ntuples creations in Python, xrootd/dcache issue
    • if we cannot get these fixed we have to stick to ROOT 5
    • we will make a final decision in November (Computing Workshop)
    • CC7 compatibility
  • IT will migrate SLS to Dashboard (a new one), possibly by the end of the month according to IT
    • Joel: there are a few show stoppers
  • ITUM next Monday
  • CHEP abstracts deadline in two weeks

Round Table

Marco Cl.

  • Nightlies
    • upgraded Jenkins
  • CMake
    • improved build logs (grouped by package)
    • will make a release of the stack after the ROOT 6 based one

Discussion on use of Virtual Machines for the nightlies.
We agreed to run massive tests on VMs in the coming weeks.

Marco Ca.

  • Issue with JIRA notification scheme: developers get too many mail
    • idea to work around it, but we need to discussed with IT (the idea is to raise the privileges of assignees to the level of developers)

Ben: JIRA migration campaign will end this week and we have to decide what to do with the deployment.
After some discussion we decided to create a new JIRA project for the deployment in sft.its.cern.ch.

Marco Ca.: the way the migration is handled is suboptimal. After the migration the savannah projects are still editable, we have all those issues about configuration, etc.


  • Ben asked for an entry point to Ariadne without authentication.

Ben: we need architectural documentation on Ariadne and the other services on buildlhcb.


  • Working on periodic tests
    • automatic Brunel callgrind reports
  • Tested jemalloc (LBCORE-616), no final conclusion
  • At LIM we were asked about LHAPDF 6


  • New release of Online
  • Clash of package name with Alignment (to be renamed).


  • Working on an algorithm to use detector elements.
  • Testing the DetElem extension mechanism.


  • Simulation Meeting: the version of CLHEP should be

-- MarcoClemencic - 01 Oct 2014

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