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Title: Domain Decomposition of a Constructive Solid Geometry Monte Carlo Transport Code

Abstract

Domain decomposition has been implemented in a Constructive Solid Geometry (CSG) Monte Carlo neutron transport code. Previous methods to parallelize a CSG code relied entirely on particle parallelism; but in our approach we distribute the geometry as well as the particles across processors. This enables calculations whose geometric description is larger than what could fit in memory of a single processor, thus it must be distributed across processors. In addition to enabling very large calculations, we show that domain decomposition can speed up calculations compared to particle parallelism alone. We also show results of a calculation of the proposed Laser Inertial-Confinement Fusion-Fission Energy (LIFE) facility, which has 5.6 million CSG parts.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
952428
Report Number(s):
LLNL-CONF-409739
TRN: US200913%%562
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: 2009 International Conference on Advances in Mathematics, Computational Methods, and Reactor Physics, Saratoga Springs, NY, United States, May 03 - May 07, 2009
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 29 ENERGY PLANNING, POLICY AND ECONOMY; 99 GENERAL AND MISCELLANEOUS; GEOMETRY; INERTIAL CONFINEMENT; LASERS; NEUTRON TRANSPORT; REACTOR PHYSICS; TRANSPORT; VELOCITY

Citation Formats

O'Brien, M J, Joy, K I, Procassini, R J, and Greenman, G M. Domain Decomposition of a Constructive Solid Geometry Monte Carlo Transport Code. United States: N. p., 2008. Web.
O'Brien, M J, Joy, K I, Procassini, R J, & Greenman, G M. Domain Decomposition of a Constructive Solid Geometry Monte Carlo Transport Code. United States.
O'Brien, M J, Joy, K I, Procassini, R J, and Greenman, G M. 2008. "Domain Decomposition of a Constructive Solid Geometry Monte Carlo Transport Code". United States. https://www.osti.gov/servlets/purl/952428.
@article{osti_952428,
title = {Domain Decomposition of a Constructive Solid Geometry Monte Carlo Transport Code},
author = {O'Brien, M J and Joy, K I and Procassini, R J and Greenman, G M},
abstractNote = {Domain decomposition has been implemented in a Constructive Solid Geometry (CSG) Monte Carlo neutron transport code. Previous methods to parallelize a CSG code relied entirely on particle parallelism; but in our approach we distribute the geometry as well as the particles across processors. This enables calculations whose geometric description is larger than what could fit in memory of a single processor, thus it must be distributed across processors. In addition to enabling very large calculations, we show that domain decomposition can speed up calculations compared to particle parallelism alone. We also show results of a calculation of the proposed Laser Inertial-Confinement Fusion-Fission Energy (LIFE) facility, which has 5.6 million CSG parts.},
doi = {},
url = {https://www.osti.gov/biblio/952428}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 07 00:00:00 EST 2008},
month = {Sun Dec 07 00:00:00 EST 2008}
}

Conference:
Other availability
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