MASSIVELY-PARALLEL COMPUTATION USING A SPLITTING-UP OPERATOR METHOD FOR 3-DIMENSIONAL DEVICE SIMULATION

This paper presents a new parallel algorithm and performance results o f iterative solution methods for three-dimensional MOSFET simulation w ith Gummel's method. A splitting-up operator method is proposed for in complete factorization of sparse matrices arising from semiconductor d evice equations, suitable for parallel computations. This method is co mbined with the conjugate gradients and BiCGSTAB procedure to obtain a new parallel version of the iterative solution methods. Natural paral lelism is realized by developing the solution method according to the natural ordering. In large-scale simulations of greater than 100 000 g rid nodes, the high parallel efficiency level over 90% can be achieved using a new-type massively parallel computer: ADENART with up to 256 processors. The real performance of the solution methods is superior t o those calculated by the vectorized version of the ICCG and ILUBiCGST AB methods using a vector-type supercomputer.