Simulation approach for improving the computing network topology and performance of the China IHEP Data Center

Andrey Nechaevskiy,Vladimir Trofimov,Darya Pryahina,Gennady Ososkov,Weidong Li,A Forti,L Betev,O Smirnova,M Litmaath,P Hristov

doi:10.1051/epjconf/201921408018

Abstract

The paper describes the project intended to improve the computing network topology and performance of the China IHEP Data Center taking into account growing numbers of hosts, experiments and computing resources. The analysis of the computing performance of the IHEP Data Center in order to optimize its distributed data processing system is a really hard problem due to the great scale and complexity of shared computing and storage resources between various HEP experiments. In order to fulfil the requirements, we adopt the simulation program SyMSim that was developed at the Laboratory of Information Technologies of the Joint Institute for Nuclear Research. This simulation system is focused on improving the efficiency of the grid-cloud structures development by using the work quality indicators of some real system. SyMSim facilitates making a decision regarding required equipment and resources. The simulation uses input parameters from the data base of the IHEP computing infrastructure, besides we use some data of the BESIII experiments to indicate workflow and data flow parameters for simulation three different cases of organizing IHEP computing infrastructure. The first simulation results show that the proposed approach allows us to make an optimal choice of the network topology improving its performance and saving resources.

Highlights

The Chinese Academy of Sciences Research Institute of High Energy Physics (IHEP) [1] is China’s biggest laboratory for the study of particle physics
The development of sophisticate grid-cloud systems intended to store, distribute, and process super-big volumes of experimental data inevitably demands a substantial study of their optimality by detailed simulation of these systems
The basic concepts underlying the simulation program SyMSim suppose that this is combined with a real monitoring system of the grid-cloud service through a special database (DB) and includes the following components:

Summary

Introduction

The Chinese Academy of Sciences Research Institute of High Energy Physics (IHEP) [1] is China’s biggest laboratory for the study of particle physics. Developing high energy physics (HEP) experiments, such as Beijing Spectrometer (BESIII) Experiment [2], are expecting to deal with Exabyte data scale and need corresponding means of distributed computing. The development of sophisticate grid-cloud systems intended to store, distribute, and process super-big volumes of experimental data inevitably demands a substantial study of their optimality by detailed simulation of these systems. Simulation program SyMSim (Synthesis of Monitoring and Simulation) [3] was developed at Laboratory of Information Technology (LIT) of the Joint Institute for Nuclear Research (JINR) and modified for the IHEP simulation

Basic concepts of simulations

The simulation experience of China IHEP Data Center

Possible improvements of the job flow process

Findings

Conclusion