Dear all, I’m trying to decrease the level of verbosity of my program, related to the the following output messages about the physics list used by my model (G4HadronElasticPhysicsHP, G4HadronPhysicsQGSP_BERT_HP, G4EmStandardPhysics, G4EmExtraPhysics, G4DecayPhysics, G4StoppingPhysics, G4IonPhysics,…

[image] Printing of event log Particles, Track, Event, Run and Biasing I’ve found out that even setting all these verbose settings to 0 many things are still printed out by Geant4. Therefore, in my own code I decided to just disable stdout output temporarily when I don’t w…

Thank you very much! I used your function and it works well. The problem is that I noticed that the time spent by the simulation is the same in both cases, enabled or disabled stdout. Indeed, I want to reduce the time of the simulation lost by the verbosity. Christian

In that case, you should compile Geant4 with -DGEANT4_BUILD_VERBOSE_CODE=OFF as suggested in the other Forum post (maybe also -DGEANT4_BUILD_STORE_TRAJECTORY if that’s enabled for you). Although for the initialization part, the options above will not change much. If you want to turn off most output…

Ok thanks for your suggestion! I tried all the solutions provided, but Geant4 still works at the same speed with or without verbosity. At this point, I think it is a problem that should be fixed in the next versions of the code. Christian

Hello, In recent versions of Geant4 it is needed to set to zero “em” and “had” verbosity. VI

In case it helps, the verbosity level can be passed as a parameter to the PhyscisList constructor. If you don’t want any output from the physics list just instantiate it like this example: int verboseLevel = 0; // set to zero for non-verbosity G4VModularPhysicsList* phys = new QGSP_BERT_HP(verbose…

Reducing verbosity in output messages for cross sections and physics list

Physics Processes, Models and Cross Sections

amadio December 13, 2021, 7:57am 2