A finite element method is presented to compute time harmonic microwav
e fields in three dimensional configurations. Nodal-based finite eleme
nts have been coupled with an absorbing boundary condition to solve op
en boundary problems. This paper describes how the modeling of large d
evices has been made possible using parallel computation, New algorith
ms are then proposed to implement this formulation on a cluster of wor
kstations (10 DEC ALPHA 300X) and on a CRAY C98. Analysis of the compu
tation efficiency is performed using simple problems. The electromagne
tic scattering of a plane wave by a perfect electric conducting airpla
ne is finally given as example.