LHCb Core Software Meeting

Date and Location

2015-10-28
10:30 - 11:38
CERN (2-R-030)

Attendees

Andrea Valassi, Ben Couturier, Benedikt Hegner, Gerhard Raven, Gloria Corti, Illya Shapoval, Kevin ..., Liang Sun, Marco Cattaneo, Marco Clemencic (minutes), Markus Frank, Stefan Roiser, Victoria Santiago

Subjects

Discussion on C++ Language Baseline for 2016 Run

Marco Ca.: what we should do between

Build system

  • Marco Cl.: cmake based releases
    • missing Geant4 and Gauss
    • LHCbDirac
    • Ganga

Markus: issue with shared build directories. action

C++ version

Gerhard: we need C++14 or the part of it in gcc 4.9.

Marco Ca.: it's not likely we can move to gcc 5.x, so we should focus on gcc 4.9

Marco Ca.:

Markus: we can starting testing at the PIT

Marco Ca.: we can change the default CMTCONFIG to gcc49 beginning of January, and allow C++14 in March.

ROOT

ROOT 6.06 contains big changes under the

Marco Ca.: let's try it in Jan if the nightlies ar OK

CLHEP

Marco Ca.: it's preventing us to move to the latest LCG and we do not want to be stuck forever.

Gloria: we use it for two reasons:

  • random numbers
  • generators

As soon as we can validate Geant4/Gauss with CMake

Python 3

Migration very difficult. We can start planning it in 2016 aiming for LS2.

Round Table

Marco Cl.

  • ccache in the nightly builds
  • git support in getpack and lb-dev?
  • merge of Gaudi Hive
    • OK to break head of Gaudi

Gerhard

  • Properties to be removed GlobalTimeOffset and RootOnTes.

Marco Ca.

  • What the status of the migration of buildlhcb?
    • still Ariadne and Jenkins (and storage) to be moved. Waiting for Joel.


-- MarcoClemencic - 2015-10-28

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