A concurrent, multigroup, discrete ordinates model of neutron transport

Author

Dorr, M.R. ; Still, C.H.

Author_Institution

Numerical Math. Group, Lawrence Livermore Nat. Lab., CA, USA

fYear

1993

fDate

6-8 Oct 1993

Firstpage

26

Lastpage

35

Abstract

We present an algorithm for the concurrent solution of the linear system arising from a multigroup, discrete ordinates model of neutron transport. The target architectures consist of distributed memory computers ranging from workstation clusters to massively parallel computers. Based on an analysis of the memory requirement and floating point complexity of matrix-vector multiplication in the iterative solution of the linear system, we propose a data layout and communication strategy designed to achieve scalability with respect to all phase space variables. Numerical results are presented to demonstrate the performance of the algorithm on the nCUBE/2

Keywords

distributed memory systems; iterative methods; matrix algebra; neutron diffusion; neutron transport theory; nuclear engineering computing; numerical analysis; parallel algorithms; vectors; workstations; communication strategy; concurrent discrete ordinates model; concurrent solution; data layout; distributed memory computers; floating point complexity; iterative solution; linear system; massively parallel computers; matrix-vector multiplication; memory requirement; multigroup discrete ordinates model; nCUBE/2; neutron transport; numerical results; phase space variables; scalability; target architectures; workstation clusters; Clustering algorithms; Distributed computing; Fusion reactor design; Iterative algorithms; Laboratories; Linear systems; Mathematical model; Neutrons; Scalability; Workstations;

fLanguage

English

Publisher

ieee

Conference_Titel

Scalable Parallel Libraries Conference, 1993., Proceedings of the

Conference_Location

Mississippi State, MS

Print_ISBN

0-8186-4980-1

Type

conf

DOI

10.1109/SPLC.1993.365585

Filename

365585