Authors & Affiliations
Palshin V.A.
National Research Centre "Kurchatov Institute", Moscow, Russia
Abstract
Full-scale reactor dynamics simulation using linked neutronics and thermohydraulic software is computer-intensive, with most part of the calculations normally being accounted for by the simulation of neutronic processes.The BARS code is one of the widely-accepted dynamic codes. The most com-puter-intensive part of the BARS code is the calculation of space-energy distribution of neutron flux density performed by the TREC software module. Currently parallel computing has been widely ap-plied in order to speed up the software. The paper discusses paralleling of the neutron flux density space-energy distribution calculations performed by the TREC software module using CUDA (Compute Unified Device Architecture) graphics cards. The developed algorithms of parallel compu-ting at a graphics processing unit in the course of heterogeneous equations solution have demonstrated their high efficiency. Speedup of the TREC code calculation compared to the calculations at the central processing unit is more than 30 times for conventional calculations with 25 axial harmonics.
Key words
Heterogeneous reactor, BARS code, parallel computing, graphics processing unit, harmonics, reactor dynamics simulation, space-energy distribution, neutron flux density
Article Text (PDF, in Russian)
UDC 621.039.5:004.94
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, issue 1:1, 2015