Solving bigger problems-by decreasing the operation count and increasing the computation bandwidth

The purpose is to illustrate the computational complexity of modeling large (in wavelengths) electromagnetic problems and to suggest some ways by which the computational requirements can be reduced. The author indicates that, despite the dramatic increase of 106 in throughput that has occurred between the UNIVAC-1 and the current CRAY-2, the impact on the ability to handle computations at ten times the original (temporal) frequency has shown only marginal improvements. This is because the required floating-point operation (FLOP) count for integral-equation (IE) and differential-equation (DE) models grows with frequency. f, as f/sup x/, where 3>