Improving the Efficiency of Parallel FFTs in Parallel Electromagnetic Solvers Based on the AIM

Progress on a parallel boundary element method solver that targets structures embedded in layered media is presented. We compare the effectiveness of blocking and nonblocking communication methods in the propagation stage of the adaptive integral method (AIM). We demonstrate that the execution time of the proposed solver can be decreased with the nonblocking communication scheme. The proposed solver can compute the radar cross section of large multiscale structures, with up to 3.2 million unknowns, in under 15 seconds per frequency sample.