Can a Helmholtz solver run on a cluster?

Author

Gruber, Ralf ; Keller, Vincent ; Leriche, Emmanuel ; Habisreutinger, Marc-Antoine

Author_Institution

Swiss Fed. Inst. of Technol., Lausanne

fYear

2006

fDate

25-28 Sept. 2006

Firstpage

1

Lastpage

8

Abstract

Our vectorized Helmholtz solver runs at 85% efficiency on a NEC SX-5. The most time-consuming parts have been ported on SMP, NUMA, and cluster architectures. It is shown that an OpenMP version can deliver similar performance when running it on a 16 processor SGI Altix. A partial parallelisation using MPI is made to validate the Gamma model to predict application behaviours on parallel machines. This model is then applied to simulate the behaviour of a hypothetical full MPI version on different distributed memory machines. It is found that only the Cray XT3 with its very fast internode communication network will be able to deliver the performance of a NEC SX-8 with the advantage that bigger case could be handled

Keywords

message passing; physics computing; workstation clusters; Gamma model; MPI; NUMA; OpenMP; SMP; cluster architecture; parallel machine; partial parallelisation; vectorized Helmholtz solver; Boundary conditions; Chebyshev approximation; Communication networks; Computer architecture; Costs; Geometry; Laboratories; National electric code; Parallel machines; Predictive models;

fLanguage

English

Publisher

ieee

Conference_Titel

Cluster Computing, 2006 IEEE International Conference on

Conference_Location

Barcelona

ISSN

1552-5244

Print_ISBN

1-4244-0327-8

Electronic_ISBN

1552-5244

Type

conf

DOI

10.1109/CLUSTR.2006.311874

Filename

4100380