Upgrades for the CMS simulation

16th International workshop on Advanced Computing and Analysis Techniques in physics research

物理学;计算机科学

Lange, D.J.^1 ; Hildreth, M.^2 ; Ivantchenko, V.N.^3 ; Osborne, I.^4

Lawrence Livermore National Laboratory, Livermore

CA

94550, United States^1

University of Notre Dame, Notre Dame

IN

64556, United States^2

CERN, Geneva, Switzerland^3

Fermi National Laboratory, Batavia

IL

60510, United States^4

关键词: Detector configuration;    Detector simulations;    GEANT4 simulation;    Numerical techniques;    Performance improvements;    Simulation applications;    Speed improvement;    Technical improvement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/608/1/012056/pdf
DOI  :  10.1088/1742-6596/608/1/012056

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Over the past several years, the CMS experiment has made significant changes to its detector simulation application. The geometry has been generalized to include modifications being made to the CMS detector for 2015 operations, as well as model improvements to the simulation geometry of the current CMS detector and the implementation of a number of approved and possible future detector configurations. These include both completely new tracker and calorimetry systems. We have completed the transition to Geant4 version 10, we have made significant progress in reducing the CPU resources required to run our Geant4 simulation. These have been achieved through both technical improvements and through numerical techniques. Substantial speed improvements have been achieved without changing the physics validation benchmarks that the experiment uses to validate our simulation application for use in production. In this presentation, we will discuss the methods that we implemented and the corresponding demonstrated performance improvements deployed for our 2015 simulation application.