On the Solution of Large EM Problems using a Fast Geometrically Non-Conforming Domain Decomposition Method

This paper implements a fast geometrically non-conforming dual primal-finite element tearing interconnecting (DP-FETI) DDM to help alleviate these problems. The present method is largely composed of three major ingredients; 1) decoupling of the geometrically conforming and non-conforming domains by the use of the FETI algorithm; 2) solution of the resulting finite element matrix equation with multiple right-hand-sides using the state-of-art pMUS preconditioner; 3) compression of the numerical Green's function via an efficient rank-revealing SVD algorithm