BES-III distributed computing status
Sergey Belov, Z. Y. Deng, V. Korenkov, W. D. Li, Tao Lin, Z. T. Ma, C. Nicholson, I. Pelevanyuk, B. Suo, Vladimir V. Trofimov, A. Tsaregorodtsev, Alexander Uzhinskiy, T Yan, Xiaolang Yan, X. M. Zhang, Alexey Zhemchugov · Physics of Particles and Nuclei Letters · 2016
The BES-III experiment at the Institute of High Energy Physics (Beijing, China) is aimed at the precision measurements in e + e – annihilation in the energy range from 2.0 till 4.6 GeV. The world’s largest samples of J/psi and psi’ events and unique samples of XYZ data have been already collected. The expected increase of the data volume in the coming years required a significant evolution of the computing model, namely shift from a centralized data processing to a distributed one. This report summarizes a current design of the BES-III distributed computing system, some of key decisions and experience gained during 2 years of operations.