Solving electrically large electrodynamic problems using graphics processing units

We present results for solving electrically large electrodynamic problems using NVIDIA graphics processing units. The problems are solved using method of moments, surface integral-equation formulation, and higher-order basis functions. The large dense system of linear equations, which is filled by using method of moments, is solved with out-of-core approach accelerated with graphics processing units. Three electrically large examples are considered: a perfect electric conducing cube scatterer with up to 33 λ side length, a horn antenna with up to 125 λ length, and Cassegrain reflector antenna with up to 280 λ reflector diameter. The presented results show that problem of up to 200 000 unknown (complex) coefficients can be solved within 24 h on one personal computer with one graphics processing unit.