Abstract
An overview of a parallel implementation of the Characteristic Basis Function Method combined with the Multilevel Fast Multipole Algorithm is presented. This approach allows an accurate analysis of very large electromagnetic problems. The geometry is described by means of Non-Uniform Rational B-Splines, and the macro-basis functions are expressed in terms of subsectional functions totally conformed to the original geometry. A number of representative examples are considered in order to show the performance of the proposed approach.