For a fast simulation of interconnect structures we consider preconditioned iterative solution methods for large complex valued linear systems. In many applications the discretized equations result in ill-conditioned matrices, and efficient preconditioners are indispensable to solve the linear systems accurately. We apply the dual threshold incomplete LU (ILUT) factorization as preconditioners for the BICGSTAB iterative solver. On complicated problems with a different range of frequencies we show that the BICGSTAB method with the ILUT preconditioner provides a very efficient solution for the linear systems.
|Title of host publication||Scientific Computing in Electrical Engineering SCEE 2008|
|Editors||J. Roos, L.R.J. Costa|
|Place of Publication||Berlin|
|Publication status||Published - 2010|
|Name||Mathematics in Industry|