FastScat™: An Object-Oriented Program for Fast Scattering Computation

Authors:
Lisa Hamilton;Mark Stalzer;R. Steven Turley;John Visher;Stephen Wandzura
Affiliations:
Hughes Research Laboratories, 3011 Malibu Canyon Road, Malibu, CA 90265;Hughes Research Laboratories, 3011 Malibu Canyon Road, Malibu, CA 90265;Hughes Research Laboratories, 3011 Malibu Canyon Road, Malibu, CA 90265;Hughes Research Laboratories, 3011 Malibu Canyon Road, Malibu, CA 90265;Hughes Research Laboratories, 3011 Malibu Canyon Road, Malibu, CA 90265
Venue:
Scientific Programming - The First Annual Object-Oriented Numerics Conference (OON-SKI '93)
Year:
1993

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Abstract

FastScat is a state-of-the-art program for computing electromagnetic scattering and radiation. Its purpose is to support the study of recent algorithmic advancements, such as the fast multipole method, that promise speed-ups of several orders of magnitude over conventional algorithms. The complexity of these algorithms and their associated data structures led us to adopt an object-oriented methodology for FastScat. We discuss the program's design and several lessons learned from its C++ implementation including the appropriate level for object-orientedness in numeric software, maintainability benefits, interfacing to Fortran libraries such as LAPACK, and performance issues.