Abstract
It is well known that the solution of sparse linear systems, generally expressed in the form Ax = b, is a core task of numerical simulation. In case of semiconductor device simulation the coefficient matrix A is unsymmetric, but structurally symmetric ([2]). The solution of linear systems can be achieved by iterative or direct methods. While iterative methods do not always lead to a solution due to matrix conditions, direct methods usually consume more time and memory.
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