Using the example of the computing infrastructure of the BM@N Experiment, employees of the Laboratory of Information Technologies and the Laboratory of High Energy Physics at JINR verified results of the simulation program, which is part of the software complex for creating digital twins of distributed data acquisition, storage, and processing centres. This software can be used in the design, development, and operational control of computing systems for modern megascience projects. The paper was issued in International Journal of Open Information Technologies.

Verification of the simulation program, developed at MLIT JINR as the kernel of the software complex for the creation of digital twins of distributed data acquisition, storage, and processing centres (DDCs), was carried out on the example of the computing infrastructure of the Baryonic Matter at Nuclotron (BM@N) Experiment of the NICA Project. This computing infrastructure was used to acquire, store, and process the data from the experimental run, which took place from December 2022 to February 2023. The statistics obtained from the results of monitoring the computing infrastructure of the experiment using the DIRAC Interware Software were used as input data for modelling.

In the process of modelling, such indicators as the amount of resources required to store incoming data, the load of computational resources during the conversion of experimental data and obtaining reconstructed event data from them, the total time of job execution, and the speed of data transfer between infrastructure objects were determined.

Data transfer rate monitoring. Yellow: From the data storage to the computing resources of the NICA Cluster at VBLHEP. Blue: From the data storage to the Tier1 resources at MLIT.

The verification results proved the correct operation of the modelling program, with an average accuracy of 92%. This value of accuracy is sufficient for further use of the simulation program as part of a software complex to create digital twins of DDCs, which will be used to solve the problems of the design and development of the computational infrastructure of megascience experiments.

The full text of the scientific article entitled “Verification of the simulation program for creating digital twins of distributed data acquisition, storage, and processing centres” is available via the link. Authors: Daria Priakhina, Vladimir Korenkov, Vladimir Trofimov and Konstantin Gertsenberger.