Planning of distributed data production for High Energy and Nuclear Physics

0500205 - ÚJF 2019 RIV US eng J - Článek v odborném periodiku
Makatun, Dzmitry - Lauret, J. - Rudová, H.
Planning of distributed data production for High Energy and Nuclear Physics.
Cluster Computing-The Journal of Networks Software Tools and Applications. Roč. 21, č. 4 (2018), s. 1949-1965. ISSN 1386-7857. E-ISSN 1573-7543
Grant CEP: GA ČR GA13-20841S; GA MŠMT EE2.3.20.0207
Institucionální podpora: RVO:61389005
Klíčová slova: big data * data intensive applications * data production * distributed computing
Obor OECD: Particles and field physics
Impakt faktor: 1.851, rok: 2018

Modern experiments in High Energy and Nuclear Physics heavily rely on distributed computations using multiple computational facilities across the world. One of the essential types of the computations is a distributed data production where petabytes of raw files from a single source has to be processed once (per production campaign) using thousands of CPUs at distant locations and the output has to be transferred back to that source. The data distribution over a large system does not necessary match the distribution of storage, network and CPU capacity. Therefore, bottlenecks may appear and lead to increased latency and degraded performance. In this paper we propose a new scheduling approach for distributed data production which is based on the network flow maximization model. In our approach a central planner defines how much input and output data should be transferred over each network link in order to maximize the computational throughput. Such plans are created periodically for a fixed planning time interval using up-to-date information on network, storage and CPU resources. The centrally created plans are executed in a distributed manner by dedicated services running at participating sites. Our simulations based on the log records from the data production framework of the experiment STAR (Solenoid Tracker at RHIC) have shown that the proposed model systematically provides a better performance compared to the simulated traditional techniques.
Trvalý link: http://hdl.handle.net/11104/0292321