LHCb Core Software Meeting

Date and Location

30. August 2006
10:00 - 12:30
CERN (2-R-030)


Alexandr, Andrew, Ben, Florence, Gloria, Hubert, Joel, Juan, Marco Ca., Marco Cl. (minutes), Manuel, Matt, Nick, Olivier, Philippe, Stefan, Tim (Phone)


Summer Students' Presentations

Monitoring Service for Gaudi (Ben King)

(See the slides)

Questions and Comments

Philippe: Where do the produced files go?
When running locally or on LSF they go to the user directory. On the GRID, one should use the monalisa back-end or, with Ganga, the generated files can be digested by the wrapper script and exposed to the user.

Marco Ca.: It would be nice if we can access the service using the same name of the Gaucho one, to easily test HTL algorithms.
Marco Cl. said that it is enough to declare the service in the ApplicationMgr.extSvc list with the desired name (which should be found in the HLT code).

Philippe: Is it possible to have histograms too?
Currently it is not possible (monalisa does not have knowledge of histograms).

Philippe suggested that we can use the monitoring service in the EvtSelector to have a progress status.

The presented monitoring service implementation will be introduced in the next version of Gaudi.

Generalization of web sites structure for LHCb frameworks and applications (Alexandr Kozlinskiy)

(See the slides)

Questions and Comments

Marco Cl. suggested that the directory called "dummy" should be renamed to something like "template".

Florence: Where do the generated files go?
They go in the working directory.

The new system is welcome. It needs minor changes (like colors) and the position of the scripts and files should be modified (scripts in $LHCBSCRIPTS, the projects subdirectories (with write permission for the project manager) inside a directory managed by the librarian.


  • Philippe:
    • There will be an Architects Forum tomorrow.
    • Rumors that ROOT 5.13 should be released soon.

Software Releases

Gaudi (Hubert)

(to be filled in)

Marco Ca.: the next version of LHCb will include GaudiObjDesc to pick up a bug fix.
We agreed to permanently move G.O.D. to LHCb from the next version of Gaudi/LHCb.

LHCb, Boole, Brunel (Marco Ca.)

  • Building the new version of LHCb including new Tracking code. Should be out early next week.

Gauss (Gloria)

  • Releasing new Gauss for DC06 to fix few bugs observed in production (EvtGen).

DaVinci (Juan)

  • Finished the translation of pre-selection code (still to be fully tested)
  • Need a way in physics desktop to associate arbitrary particles to primary vertices (know how to do it, but still to be implemented)
  • Maps in DVAlgorithm options

Round Table

Can we consider the test with Hyper News successful? Do we migrate the other lists?
(... lot of discussion ...)
At the end we agreed to present H.N. during the LHCb week in Heidelberg and propose the change to the collaboration (we cannot decide for everybody). We need a way of registering to H.N. without the need of a CERN AFS account. After the approval, all LHCb users will be registerd to H.N. using the default LHCb password. The private lists will stay on SIMBA2.
Problems reading ETC during stripping. The problem is that the ETC files contains references to the DIGI files which cannot be resolved. There are 2 possibilities: use GenCatalog in DIRAC to produce an XML file catalog, or use the new version of Gaudi, which can resolve gfal URLs. The two possibilities should be followed in parallel to have a solution the soonest. (The next Brunel will be based on the new Gaudi and LCG 46e)

-- MarcoClemencic - 04 Sep 2006

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