I hope that this could be the right section to post this question.
I noticed that the run time for the same simulation (same primary particles, same geometry, same number of events etc…) runned with command line interface or with Qt GUI interface are very different.
In particular, a simulation of 10 k events:
Command line: 0.3 s user / 0.3 s real
Qt GUI: 2 s user / 12 s real
Plese note that the storing of trajectory is disabled (/tracking/storeTrajectory 0) when the simulation is performed with the Qt GUI.
If I disable the visualization system (/vis/disable) I gain about a factor 2-3 but the run time is still very high.
Is that normal? Why the run time is much higher with the GUI if there is no visualization? (maybe I’m doing something wrong…)
And, why the real time is much higher than the user time with the Qt GUI?
Thank you for your help and explanations.