Three-dimensional discrete ordinates reactor assembly calculations on GPUs
Abstract
In this paper we describe and demonstrate a discrete ordinates sweep algorithm on GPUs. This sweep algorithm is nested within a multilevel comunication-based decomposition based on energy. We demonstrated the effectiveness of this algorithm on detailed three-dimensional critical experiments and PWR lattice problems. For these problems we show improvement factors of 4 6 over conventional communication-based, CPU-only sweeps. These sweep kernel speedups resulted in a factor of 2 total time-to-solution improvement.
- Authors:
-
- ORNL
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Consortium for Advanced Simulation of LWRs (CASL)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1185874
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Conference
- Resource Relation:
- Conference: ANS M&C 2015 - Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA) and the Monte Carlo (MC) Method, Nashville, TN, USA, 20150419, 20150423
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
Citation Formats
Evans, Thomas M, Joubert, Wayne, Hamilton, Steven P, Johnson, Seth R, Turner, John A, Davidson, Gregory G, and Pandya, Tara M. Three-dimensional discrete ordinates reactor assembly calculations on GPUs. United States: N. p., 2015.
Web.
Evans, Thomas M, Joubert, Wayne, Hamilton, Steven P, Johnson, Seth R, Turner, John A, Davidson, Gregory G, & Pandya, Tara M. Three-dimensional discrete ordinates reactor assembly calculations on GPUs. United States.
Evans, Thomas M, Joubert, Wayne, Hamilton, Steven P, Johnson, Seth R, Turner, John A, Davidson, Gregory G, and Pandya, Tara M. 2015.
"Three-dimensional discrete ordinates reactor assembly calculations on GPUs". United States.
@article{osti_1185874,
title = {Three-dimensional discrete ordinates reactor assembly calculations on GPUs},
author = {Evans, Thomas M and Joubert, Wayne and Hamilton, Steven P and Johnson, Seth R and Turner, John A and Davidson, Gregory G and Pandya, Tara M},
abstractNote = {In this paper we describe and demonstrate a discrete ordinates sweep algorithm on GPUs. This sweep algorithm is nested within a multilevel comunication-based decomposition based on energy. We demonstrated the effectiveness of this algorithm on detailed three-dimensional critical experiments and PWR lattice problems. For these problems we show improvement factors of 4 6 over conventional communication-based, CPU-only sweeps. These sweep kernel speedups resulted in a factor of 2 total time-to-solution improvement.},
doi = {},
url = {https://www.osti.gov/biblio/1185874},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}
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