Journal ArticleDOI
GPU-based implementation of a diagnostic wind field model used in real-time prediction of atmospheric dispersion of radionuclides
André Luis da Silva Pinheiro,Filipe Santana Moreira do Desterro,Marcelo Carvalho dos Santos,Cláudio Márcio do Nascimento Abreu Pereira,Roberto Schirru +4 more
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TLDR
A new parallel GPU-based algorithm was implemented using the Compute Unified Device Architecture (CUDA) and C programming language, and the execution time of a fine-grained simulation decreased from about 450 s to 18 s.About:
This article is published in Progress in Nuclear Energy.The article was published on 2017-09-01. It has received 10 citations till now. The article focuses on the topics: CUDA.read more
Citations
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Journal ArticleDOI
Parallelization Performances of PMSS Flow and Dispersion Modeling System over a Huge Urban Area
TL;DR: PMSS is able to simulate accidental or malevolent airborne release at high resolution on very large areas, consistent with emergency team responsibility constrains, and with computation time compatible with operational use, demonstrating that PMSS is an important asset for emergency response applications.
Journal ArticleDOI
Utilizing dynamic parallelism in CUDA to accelerate a 3D Red-Black Successive Over Relaxation wind-field solver
Behnam Bozorgmehr,Peter Willemsen,Jeremy A. Gibbs,Jeremy A. Gibbs,Rob Stoll,Jae-Jin Kim,Eric R. Pardyjak +6 more
TL;DR: QES-Winds as mentioned in this paper uses a variational analysis technique to solve the Poisson equation for Lagrange multipliers to obtain a mean wind field and GPU parallelization to accelerate the numerical solution of the poisson equation.
Journal ArticleDOI
Evaluation of atmospheric dispersion of radioactive materials in a severe accident of the BNPP based on Gaussian model
TL;DR: In this paper, the authors examined the atmospheric dispersion of these materials around the Bushehr nuclear power plant (BNPP) in a hypothetical severe accident, where the wind direction, wind speed, and the topological conditions of the power plant's environment were considered.
A CFD approach to the atmospheric dispersion of radionuclides
Celso Marcelo Franklin Lapa,Paulo Augusto Berquó de Sampaio,Milton Alves Gonçalves Junior,Seter,Engenharia e Tecnologia de Reatores Nucleares,Gestão do Conhecimento Nuclear +5 more
TL;DR: In this article, the authors advocate the use of computational fluid dynamics (CFD) to study the dispersion problem of radionuclides released from nuclear power plants (NPPs).
Journal ArticleDOI
GPGPU-accelerated environmental modelling based on the 2D advection-reaction-diffusion equation
TL;DR: This paper presents an environmental modelling solution based on a parallel implementation of the 2D advection-reaction-diffusion equation, tailored for GPGPU devices, and shows that the parallel GPU implementation can provide up to a 70-fold speedup in relation to an analogous CPU implementation.
References
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Journal ArticleDOI
A Schur method for solving algebraic Riccati equations
TL;DR: In this article, a new algorithm for solving algebraic Riccati equations (both continuous-time and discrete-time versions) is presented, which is a variant of the classical eigenvector approach and uses instead an appropriate set of Schur vectors.
Proceedings ArticleDOI
Demystifying GPU microarchitecture through microbenchmarking
TL;DR: This work develops a microbechmark suite and measures the CUDA-visible architectural characteristics of the Nvidia GT200 (GTX280) GPU, exposing undocumented features that impact program performance and correctness.
Book
Parallel Numerical Algorithms.
T. L. Freeman,Chris Phillips +1 more
TL;DR: 1. Fundamentals 2. System Support 3. Numerical Libraries 4. Linear Algebra 5. Further linear Algebra 6. Other Areas I. 7. Other areas II 8. Future Developments Bibliography Index
Journal ArticleDOI
Global risk of radioactive fallout after major nuclear reactor accidents
TL;DR: In this paper, the authors assess the cumulative, global risk of exposure to radioactivity due to atmospheric dispersion of gases and particles following severe nuclear accidents using particulate 137Cs and gaseous 131I as proxies for the fallout.