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10 million unknowns: is it that big? [computational electromagnetics]

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3 Author(s)
Velamparambil, S. ; Ansoft Corp., Boulder, CO, USA ; Weng Cho Chew ; Jiming Song

At the Center for Computational Electromagnetics at the University of Illinois, we recently solved a very-large-scale electromagnetic scattering problem. We computed the bistatic radar cross-section of a full-size aircraft at 8 GHz, involving the solution of a dense matrix equation with nearly 10.2 million unknowns. We regarded this as the "ultimate test" of a massively parallel implementation of the multilevel fast multipole algorithm (MLFMA), called ScaleME. In this paper, we narrate the technical difficulties faced and the experience gained from a very informal point of view. We describe the various methods developed for surmounting each of the obstacles.

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:45 ,  Issue: 2 )

Date of Publication:

April 2003

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