How to setup your CERN account ?

• As member of the Geant4 collaboration, you may access CERN computing facilities.

• Open and access your CERN account via ssh lxplus.cern.ch

• Create a configuration file, named for exampel env.csh, containing the following lines (do not forget to replace sincerti by your username) :

# CVS

setenv CVS_RSH ssh
setenv CVSROOT ":gserver:${USER}@geant4.cvs.cern.ch:/cvs/Geant4"

setenv _EDITOR "${EDITOR}"
if ( -ef "${_EDITOR}" ) then
 setenv CVSEDITOR "${_EDITOR}"
else
 setenv CVSEDITOR `which vi`
endif
unsetenv _EDITOR

# Geant4

setenv G4SYSTEM Linux-g++
setenv G4INSTALL "/scratch/sincerti/geant4"
setenv G4WORKDIR "${G4INSTALL}/workdir"
setenv G4LIB "${G4INSTALL}/lib"
setenv G4TMP "${G4INSTALL}/tmp"
setenv G4DEBUG 1

setenv G4LEDATA /afs/cern.ch/sw/geant4/dev/data/G4EMLOW
setenv G4LEVELGAMMADATA /afs/cern.ch/sw/geant4/dev/data/PhotonEvaporation
setenv G4RADIOACTIVEDATA /afs/cern.ch/sw/geant4/dev/data/RadiativeDecay
setenv NeutronHPCrossSections /afs/cern.ch/sw/geant4/dev/data/G4NDL
setenv G4ELASTICDATA /afs/cern.ch/sw/geant4/dev/data/G4ELASTIC

setenv CLHEP_BASE_DIR /afs/cern.ch/sw/geant4/dev/CLHEP/pro/slc4_x86_64_gcc346

• Make sure to include the following line in your .tcshrc file (do not forget to adapt the path to your own path)

source  /afs/cern.ch/user/s/sincerti/env.csh

• Then, from the lxplus machine, you can connect for example to pcgeant02 via ssh pcgeant02 (SLC4, x86, 64 bits, gcc 3.4.6 - corresponding to the above CLHEP_BASE_DIR variable). You may also use pcgeant01.

• We can create for you a disk working area under /scratch where you can work freely (no backup).

• All details regarding the use of CVS are here : http://geant4.web.cern.ch/geant4/collaboration/cvsmanagement.shtml

-- SebastienIncerti - 20 Mar 2009