Multithreading problem

Hello all, I am trying to run a simulation on my university cluster, it has 48 cores per node and I am using the command “make -j32” for geant4 compilation and the simulation compilation, but it seems its only using 1 core instead of 32. I would appreciate any suggestions regarding this case.
Thank you in advance.

Do you mean that when your simulation is running it only uses 1 core?

The command make -jN will use only N cores to compile the simulation, the number of cores used to run it is not effected by this number. That value is set via G4MTRunManager::SetNumberOfThreads().

Thanks, I figured all out but still got a Break segmentation violation, I’m guessing there was a problem when saving multiple root files… so I just decided to do multiple screens and run the same simulation on different folders.