Geant4 11 on cvmf

faca87 · January 26, 2022, 9:44am

Hello,

up to now I was using Geant4 10.7 …in particular, I was using the Geant4 on cvmf using the sources (that’s because if the simulation needs many time to run, I don’t need to use my computer…I run the simulation by ssh connection)

source /cvmfs/geant4.cern.ch/geant4/10.7.p01/x86_64-centos7-gcc8-optdeb-MT/bin/geant4.sh
source /cvmfs/geant4.cern.ch/geant4/10.7.p01/x86_64-centos7-gcc8-optdeb-MT/CMake-setup.sh

I was trying to add the scintillation to my simulation, but according to @weller Scintillation light - #38 by weller , the code works only by Geant4

I looked for Geant4 11 on cvmfs and I found the source
source /cvmfs/geant4.cern.ch/geant4/11.0/x86_64-centos7-gcc8-optdeb-MT/bin/geant4.sh

but, as you can see in the print screen

THERE ISN’T the source for CMake
source /cvmfs/geant4.cern.ch/geant4/11.0/x86_64-centos7-gcc8-optdeb-MT/CMake-setup.sh

then I found Geant411.00_cand01 having both the required sources

source /cvmfs/geant4.cern.ch/geant4/11.0_cand01/x86_64-centos7-gcc8-optdeb-MT/bin/geant4.sh 
source /cvmfs/geant4.cern.ch/geant4/11.0_cand01/x86_64-centos7-gcc8-optdeb-MT/CMake-setup.sh

I tried to compile my simulation (that up to now I used on Geant4 10.7) by this version of Geant4 11.0_cand01 but it says that it can’t find g4analysis.hh that is required to save on root files

looking on the B5 example of the Geant4 11 I see that it use

#include "G4AnalysisManager.hh"

then I substituted

#include "g4analysis.hh"

by

``#include “G4AnalysisManager.hh”`

but it doesn’t work, because I get the error:

@bmorgan maybe, do you know other version of Geant4?

weller · January 26, 2022, 10:16am

this should work:

G4RootAnalysisManager* analysisManager = G4RootAnalysisManager::Instance();

and apropriate include statements.

faca87 · January 26, 2022, 11:43am

Thank you @weller
I substituted
auto analysisManager = G4Analysis::ManagerInstance("root");

by
G4RootAnalysisManager* analysisManager = G4RootAnalysisManager::Instance();

I don’t get errors during building and compilation, but when I run

It doesn’t create the ROOT file
I get this error and the simulation doesn’t continue

PS. Truly, the B5 example of Geant4 11.00 uses the line
auto analysisManager = G4Analysis::ManagerInstance("root");
as used in previous versions…

weller · January 26, 2022, 1:11pm

well, the error message in this case is quite specific, and luckily there is marvellous documentation for geant4

https://geant4-userdoc.web.cern.ch/UsersGuides/ForApplicationDeveloper/html/Analysis/managers.html#files-handling

gunter · January 26, 2022, 5:48pm

Hello,
It’s a mistake that the *-setup.(c)sh scripts are missing for 11.0 in cvmfs. I’ll fix this in the next few days.
Sorry,
Gunter

faca87 · January 29, 2022, 5:11pm

Hello @weller…
in the documentation it uses
auto analysisManager = G4AnalysisManager::Instance();
that doesn’t work in my case…
anyway, I also tried to specify the .root extension
analysisManager->SetFileName("B1.root");

but I get the same error

Hello, regarding the mistake do you mean only about the missing -setup.sh scripts? Or the error about

is related to it too??? is it a problem of Geant4 11.0_cand??? would it work in Geant4 11 (i.e. no the cand version)?
What is the difference between Geant4 11 and Geant4 11.0_cand?

faca87 · February 1, 2022, 9:55am

Hello, I see that the CMake file is now on the cvmf for Geant11…
but also using Gean4 11 I get the same errors as Geant4 11_cand

weller · February 1, 2022, 10:42am

try building your code in a fresh directory (that is a nice feature of using cmake and a build directory), and check that your environment variables are not containing references to the wrong version.

did you set the filename, e.g. as in example B5?

github.com

Geant4/geant4/blob/geant4-11.0-release/examples/basic/B5/src/RunAction.cc#L56


      
          // Create the generic analysis manager
          auto analysisManager = G4AnalysisManager::Instance();
          analysisManager->SetDefaultFileType("root");
             // If the filename extension is not provided, the default file type (root)
             // will be used for all files specified without extension.
          analysisManager->SetVerboseLevel(1);
          
          // Default settings
          analysisManager->SetNtupleMerging(true);
             // Note: merging ntuples is available only with Root output
          analysisManager->SetFileName("B5");
          
          // Book histograms, ntuple
          
          // Creating 1D histograms
          analysisManager
            ->CreateH1("Chamber1","Drift Chamber 1 # Hits", 50, 0., 50); // h1 Id = 0
          analysisManager
            ->CreateH1("Chamber2","Drift Chamber 2 # Hits", 50, 0., 50); // h1 Id = 1
          
          // Creating 2D histograms

not sure what error you mean, if it is related to the ManagerInstance:
https://github.com/Geant4/geant4/search?q=ManagerInstance

no.

github.com

Geant4/geant4/blob/geant4-11.0-release/examples/basic/B5/src/RunAction.cc#L47


      
          
          namespace B5
          {
          
          //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
          
          RunAction::RunAction(EventAction* eventAction)
           : fEventAction(eventAction)
          {
            // Create the generic analysis manager
            auto analysisManager = G4AnalysisManager::Instance();
            analysisManager->SetDefaultFileType("root");
               // If the filename extension is not provided, the default file type (root)
               // will be used for all files specified without extension.
            analysisManager->SetVerboseLevel(1);
          
            // Default settings
            analysisManager->SetNtupleMerging(true);
               // Note: merging ntuples is available only with Root output
            analysisManager->SetFileName("B5");

faca87 · February 2, 2022, 6:25pm

Finally I can run on G4 11!

system · February 9, 2022, 6:26pm

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