Verification of the simulation program for creating digital twins of distributed data acquisition, storage and processing centers

Abstract

The simulation program is a key element of the software complex for creating digital twins of distributed data storage and processing centers. It was verified using the example of the computing infrastructure of the BM@N experiment of the NICA accelerator complex during the first physical session of 2023. Such processes as the acquisition of experimental data, its subsequent transfer to storage nodes, as well as the multi-stage processing of particle collision events to reconstructed data, were modeled. The simulation results were compared with statistics collected by computing infrastructure monitoring tools according to such indicators as storage capacity, computing resource load, data transfer rate, astronomical processing time of the job flow. Based on the comparison, a conclusion about the reliability and satisfactory accuracy of the modeling, which ensures the correct planning of data acquisition and processing, was made. The program can be used as part of a complex to create digital twins of distributed data storage and processing centers for the design, development and operational management of such systems.