LHCb Core Software Meeting

Date and Location

18 July 2007
10:30 - 11:15
CERN (2-R-030)


Hubert, Juan, Marco Ca., Marco Cl. (minutes), Patrick (phone), Thomas



  • LCG 53 released on Saturday.
  • From Architects Forum (Marco Ca.)
    • Nightly builds fully operational on Win32, OSX/intel is coming.
    • LHCb will not use LCG 53. We may use a 53a with OX/intel support, otherwise we will go directly to 54.

Software Releases

Gaudi (Hubert, Marco Cl.)

  • Marco Cl. and Hubert working to reduce the list of patches.
  • (Marco Ca.) Vanya moved the documentation of LoKi functionalities now in Gaudi to LHCb F.A.Q., but it should go to a Gaudi TWiki. Hubert is working on setting up the Gaudi Web including a TWiki version of the Gaudi user guide, to allow easier updates.

LHCb, Boole, Brunel (Marco Ca.)

  • The new versions of Boole, Brunel, etc. have been released and announced yesterday.
  • Waiting for some code from the A-Team to be introduced in the new version of the stack that will be released next week.
  • Testing the patch by Brett Viren to improve the namespace generation in G.O.D.
  • Working to move the basic tutorial to TWiki, updating it in the process. Patrick and Gloria will have to check the result. The migration should be ready for the software week in October, when there will be a tutorial session.

HLT (Patrick)

  • After an e-mail discussion, it has been agreed not to release a new version of HLT, Phys ans Analysis with the current version of LHCb, but wait next week.
  • Migrating the DC04 web page (instructions for stripping, E.T.C., etc.) to TWiki. The new page is here.
    • Gaudi documentation should contain links to actual examples of usage like that one (GaudiExample are not and cannot be enough).

DaVinci (Juan)

  • As Patrick mentioned, Phys will be released next week.
  • Will wait until September to implement the changes of XML presented at T-Rec meeting. Marco Ca. suggested to put something in DEV sooner if possible.

Marco Ca.:

  • The code used for Alignment only should be moved to the Alignment project.
  • Yesterday, Yuehong had problems accessing some DC04 files on CASTOR2. The problem has been reported to CASTOR.
    The DaVinci documentation is not reporting instructions about how-to used CASTOR2. Juan will check.

Patrick said that DaVinci v12r14 cannot be archived because it is needed by a student. Juan will check which changes are needed to the requirements to use CASTOR2 from DaVinci v12r14 by comparing it with v12r16 (it may be enough to change the ROOT native version).

Panoramix (Thomas)

  • The new version will be released next week with the new Phys, etc.

Marco Ca. suggested to try to use the versions of the projects available on DEV.

Release and Deployment (Hubert)

  • The whole software stack has been built for all platform. The announcement will come soon.

Round Table

Marco Cl.
  • A new version of SQLDDDB (vr2r2) will be soon deployed. The tag DC06 has been moved to encompass the changes in Velo description by Mark Tobin. The old version is accessible with tag DC06-v2r1.
  • We need to discuss the migration to Oracle. What we will need on the software side is:
    • Change the options in SQLDDDB (v3)
    • Change the dependencies of DDDB to include Oracle and LFC.
    • Users will need a valid grid proxy certificate to be able to connect
      Marco Ca. proposed to have a set of SQLite files for commonly used tags.
      Thomas suggested that it could be useful to have the possibility of extracting from the DB only the conditions actually used by a job. (The information could be collected in CondDBAccessSvc then dumped to a file used by a script to create the copy)

-- MarcoClemencic - 18 Jul 2007

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Topic revision: r4 - 2007-07-25 - MarcoClemencic
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