|Message: Linking of Pythia8 to Geant4||Not Logged In (login)|
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I am currently trying to generate physics events via Pythia8 and run them through the geant4 simulation using the default example HepMCEx02. I was able to compile the example and then make and run it successfully using the hepmcAscii generator as the macro. However when trying to run with hepmc_pygen.in I received multiple error messages and after a bit of investigation, I realized that when running the example, pythia is not listed as one of the generators only hepmcAscii. I am wondering where I went wrong with compiling this example and what I can do to allow geant to recognize pythia 8 as a generator (pythia 8 is downloaded and running fine on its own it is only when trying to link the two that the problems arise). I am currently running geant 4.10.03 and pythia 8.1.23.
For reference the error messages are as follows: current generator type: pythia ***** COMMAND NOT FOUND </generator/pythia/pygive PMAS(6,1)=174.3D0> *****
***** Batch is interrupted!! ***** ***** COMMAND NOT FOUND </generator/pythia/pyinit cms p p 14000> *****
***** Batch is interrupted!! *****
Then it reads out the analysis anyhow and at the end:
*** G4Exception : InvalidSetup issued by : H02PrimaryGeneratorAction::GeneratePrimaries Generator is not instanciated. *** Fatal Exception *** core dump ***
with no visualization. I installed these using Homebrew on OS X and installed both pythia and HepMC to /usr/local/Cellar so the installation should not be the issue. Any thoughts?