Approaches to load balancing massively parallel transport sweeps on unstructured grids

Tarek Habib Ghaddar, Jean C. Ragusa, Marvin L. Adams

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

PDT, Texas A&M’s massively parallel deterministic transport sweep code, has the capability to sweep on unstructured grids. In order to combat the inherent imbalance (inequivalent amount of work per processor) of unstructured meshes for transport sweeps, we implemented two automated load balancing algorithms: the original load balancing algorithm and the load balancing by dimension algorithm. In a parametric study, the original load balancing algorithm improved balance by a maximum of 89% with a mean improvement of 16.9%, while the load balancing by dimension algorithm improved balance by a maximum of 93.8% with a mean improvement of 32.3%.

Original languageEnglish
Title of host publicationInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
PublisherAmerican Nuclear Society
Pages2150-2159
Number of pages10
ISBN (Electronic)9780894487699
StatePublished - 2019
Externally publishedYes
Event2019 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019 - Portland, United States
Duration: Aug 25 2019Aug 29 2019

Publication series

NameInternational Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019

Conference

Conference2019 International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019
Country/TerritoryUnited States
CityPortland
Period08/25/1908/29/19

Funding

This material is based upon work supported by the Department of Energy, National Nuclear Security Administration, under Award Number(s) DE-NA0002376.

FundersFunder number
U.S. Department of Energy
National Nuclear Security AdministrationDE-NA0002376

    Keywords

    • Load balancing
    • Massively parallel
    • Transport sweep
    • Unstructured

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