1. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 1 DIRAC Software distribution A.Tsaregorodtsev, CPPM, Marseille LHCb-ATLAS GANGA Workshop, 21 April 2004

2. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 2 Software to be installed  Before an LHCb application can run on a Worker Node the following software components should be installed:  Application software itself;  Software packages on which the application depends;  Necessary databases  DIRAC software  Before the software can be installed it should be packaged:  Single untar command to install in place

3. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 3 Software packaging  The application packaging tools:  Based on the projects;  Using InstallArea populated while a project release;  Automatic resolution of the dependencies between the projects: Analysing CMT dependencies information; Analysing CMTPATH defined by a project bootstrapping script.  All the options are expanded to avoid including files  All the necessary libraries are included – no assumption made about the availability of whatever software on the destination site (except python interpreter):  External libraries;  Compiler libraries.

4. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 4 Software packaging (2) GAUDI + ExternalLibs + ROOT + Compiler libs GAUDI + ExternalLibs + ROOT + Compiler libs LHCb DaVinci Brunel Boole Gauss ParamFiles Geant4Files dkcards XmlDDDB Applications Data Packages Base libraries … …

5. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 5 Software packaging (3)  Package software: TAR files for the DIRAC style installation; RPM files suitable for the LCG installation;  DIRAC software is packaged in a similar way  Structure of installed DIRAC software is the same as that of the CVS repository  The packaging tools are:  Implemented as a set of python classes;  Meant to be a part of the project release procedure Done by a software librarian

6. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 6 Software installation  Software repository:  Web server (http protocol)  LCG Storage Element  Installation in place DIRAC way:  By Agent upon reception of a job with particular software requirements; OR  By a running job itself.  Installation in place LCG2 way:  Special kind of a job running standard DIRAC software installation utility

7. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 7 Package structure  Binary package structure:  $LHCBPRODROOT=/opt/lhcb on LCG2  Common root for all the LHCb software on a production site or CE;  Contains both application and DIRAC software $LHCBPRODROOT/lib/DaVinci/v12r3/bin/.../lib/.../options/.../setup.csh.../dependencies $LHCBPRODROOT/lib/DaVinci/v12r3/bin/.../lib/.../options/.../setup.csh.../dependencies

8. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 8 Package setup  dependenices file contains all the packages/versions on which the package depends  Used to check and/or installed dependencies of the package  setup.csh is executed before invoking the application:  Setting up the application environment;  Invokes setup.csh of each dependency package

9. LHCb-ATLAS GANGA Workshop, 21 April 2004, CERN 9 Analysis software  Basic software (DaVinci, Gaudi, databases) installed in the same way from the LHCb repository;  User algorithms:  Shipped in the InputSandbox *.so libraries Python scripts  DaVinci user options are appended to the standard options