A PARALLEL IMPLEMENTATION OF THE FINITE-DIFFERENCE TIME-DOMAIN ALGORITHM

In this paper a parallel algorithm is created for solving electromagne tic wave scattering problems. The algorithm based on the finite differ ence time-domain (FDTD) representation of the Maxwell's equations writ ten in 3L Parallel Fortran for use on a transputer array. The problem simulated consists of a space (air) where a spherical dielectric scatt erer is located. This space is subdivided into fine equisize meshes ex tending throughout the 3-D domain; the excitation wave is of sinusoida l form. Geometric decomposition is used as the principal algorithm str ategy. Results are presented for the performance of the classical sequ ential algorithm and compared with the parallel algorithm in terms of computational speed-up.