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Authors: Alexander Sharmazanashvili, Besik Kekelia
Publisher: GESJ: Computer Science and Telecommunications. No.1(59). ISSN 1512-1232
Year: 2021
Abstract
The simulation is being used for the production of the artificial event for the physics analyses. Several generators simulate the particle collisions and create the hits. The ATLAS simulation generates about 5-7 billion events per year and it requires about 77Mln computing hours [2]. Therefore, one of the important parameters of simulation is performance. The ATLAS uses Geant4 as a simulation infrastructure. The Geant4 uses geometry descriptions as an input for the modelling of the propagation of the particles through the material. On the other hand, there are several methods for the creation of geometry descriptions in Geant4. This paper gives qualitative and quantitative results of the investigation of the influence of the methods of geometry description in Geant4 on the performance of the simulation. The conclusions bring a good understanding together with the quantity measurements, how geometry has to be described for the particular cases in order to ensure the minimum CPU usage and the RAM consumption.
