CMS Full Simulation for Run-2

21st International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Hildreth, M.^1,2 ; Ivanchenko, V.N.^3,4,5 ; Lange, D.J.^6 ; Kortelainen, M.J.^3

Université de Notre Dame du Lac, Notre Dame

IN, United States^1

FNAL, Batavia

IL, United States^2

CERN, Geneva 23

CH1211, Switzerland^3

Ecoanalytica, Moscow

119899, Russia^4

Geant4 Asso. International Ltd, United Kingdom^5

Lawrence Livermore National Laboratory, Livermore

CA, United States^6

关键词: Full simulations;    Improve performance;    Multithreaded;    Russian roulette;    Simulation approach;    Software component;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/7/072022/pdf
DOI  :  10.1088/1742-6596/664/7/072022

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

During LHC shutdown between run-1 and run-2 intensive developments were carried out to improve performance of CMS simulation. For physics improvements migration from Geant4 9.4p03 to Geant4 10.0p02 has been performed. CPU performance has been improved by introduction of the Russian roulette method inside CMS calorimeters, optimization of CMS simulation sub-libraries, and usage of statics build of the simulation executable. As a result of these efforts, CMS simulation has been speeded up by about factor two. In this work we provide description of updates for different software components of CMS simulation. Development of a multi-threaded (MT) simulation approach for CMS will be also discuss.