Large Scale Monte Carlo Simulation of Neutrino Interactions Using the Open Science Grid and Commercial Clouds

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

物理学;计算机科学

Norman, A.^1 ; Boyd, J.^1 ; Davies, G.^2 ; Flumerfelt, E.^1 ; Herner, K.^1 ; Mayer, N.^3 ; Mhashilhar, P.^1 ; Tamsett, M.^4 ; Timm, S.^1

Fermi National Accelerator Laboratory, Bativa

IL, United States^1

Indiana University, Bloomington

IN, United States^2

Tufts University, Boston

MA, United States^3

University of Sussex, Brighton, United Kingdom^4

关键词: Computing infrastructures;    Large scale simulations;    Long base line;    Neutrino beams;    Neutrino experiments;    Neutrino interactions;    Open science grid;    Systematic uncertainties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/3/032023/pdf
DOI  :  10.1088/1742-6596/664/3/032023

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Modern long baseline neutrino experiments like the NOvA experiment at Fermilab, require large scale, compute intensive simulations of their neutrino beam fluxes and backgrounds induced by cosmic rays. The amount of simulation required to keep the systematic uncertainties in the simulation from dominating the final physics results is often 10x to 100x that of the actual detector exposure. For the first physics results from NOvA this has meant the simulation of more than 2 billion cosmic ray events in the far detector and more than 200 million NuMI beam spill simulations. Performing these high statistics levels of simulation have been made possible for NOvA through the use of the Open Science Grid and through large scale runs on commercial clouds like Amazon EC2. We details the challenges in performing large scale simulation in these environments and how the computing infrastructure for the NOvA experiment has been adapted to seamlessly support the running of different simulation and data processing tasks on these resources.