@inproceedings{748688325b9645b68b263a4b86df4aa6,
title = "Acceleration of discrete ordinates calculations using parallel partial current rebalance algorithm and algebraic multigrid solver",
abstract = "To accelerate the discrete ordinates calculation in real-world radiation shielding and reactor physics applications, this paper presents our effort on developing a parallel PCR (Partial Current Rebalance) acceleration algorithm for source iteration. The PCR algorithm takes advantage of the advanced AMG solver to improve the convergence rate of the acceleration equation solution. The parallelization is facilitated by using the patch-based domain partition algorithm, which enables utilizing large-scale parallel machines. The correctness and effectiveness are demonstrated through the Takeda benchmark models and the QS-II (Qinshan-II) radiation shielding model. In simulating the QS-II model with 7.4 billion degrees of freedom, the compute time is reduced by a factor of 2.6 on single processor and the parallel efficiency of 44\% is achieved on 1536 CPU cores.",
keywords = "Algebraic multigrid, Discrete ordinates, Parallel computing, Partial current rebalance, Radiation shielding calculation",
author = "T. Cheng and Z. Mo and J. Wei and G. Zhang and H. Shen and L. Deng",
year = "2016",
language = "英语",
series = "Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century",
publisher = "American Nuclear Society",
pages = "3188--3197",
booktitle = "Physics of Reactors 2016, PHYSOR 2016",
address = "美国",
note = "Physics of Reactors 2016: Unifying Theory and Experiments in the 21st Century, PHYSOR 2016 ; Conference date: 01-05-2016 Through 05-05-2016",
}