Accession Number : ADA291149

Title :   Parallel Adaptive Finite Element: Software for Semiconductor Device Simulation,

Corporate Author : STANFORD UNIV CA

Personal Author(s) : Dutton, R. W. ; Law, K. H. ; Pinsky, P. M. ; Aluru, N.

PDF Url : ADA291149

Report Date : 12 JAN 1995

Pagination or Media Count : 240

Abstract : Parallel algorithms and fully functional application codes for 2D and 3D device analysis of semiconductor devices have been demonstrated. Advanced modeling based on a hydrodynamic formulation (HD) of the semiconductor transport equations and using a Galerkin Least Squares Finite Element Method (GLS-FEM) has demonstrated nearly ideal parallel performance for 2D MOS and Bipolar transistor applications across Intel and IBM machines. Parallelization of conventional drift-diffusion (DD) based device solvers has broken new ground in both direct and iterative solvers. A well-known application code, PISCES, has been parallelized and ported across Intel, TMC, and IBM architectures with best results to date that now approach 6.5 GFlops sustained performance on a 128 node IBM SP/2. A prototype 3D code (STRIDE) which uses iterative methods has parallelized preconditioners for ILU(O), ILU(1), and ILUV and achieved excellent benchmarks on both the Intel and IBM machines. A 4.9 million grid problem run on the Intel Delta machine achieved 20% efficiency using 512 nodes and convergent solutions for a highly nonlinear bipolar transistor problem in 20 minutes per bias point. In support of both 2D and 3D TCAD applications, a new geometry-based structure generator called VIP3D was created. Quad- and oct-tree utilities were developed and used to support the gridding of complex IC structures benchmarked in this work. Results of industrial impact and collaborative interactions are also discussed. (AN)

Descriptors :   *COMPUTERIZED SIMULATION, *FINITE ELEMENT ANALYSIS, *PARALLEL PROCESSING, *SEMICONDUCTOR DEVICES, MATHEMATICAL MODELS, ALGORITHMS, SOFTWARE ENGINEERING, IMPACT, COMPUTER AIDED DESIGN, GRIDS, CHARGE CARRIERS, INTEGRATED CIRCUITS, THREE DIMENSIONAL, TRANSPORT PROPERTIES, NONLINEAR SYSTEMS, SOLUTIONS(GENERAL), LEAST SQUARES METHOD, ADAPTIVE SYSTEMS, PARTIAL DIFFERENTIAL EQUATIONS, CONVERGENCE, BIAS, ITERATIONS, ERROR CORRECTION CODES, BIPOLAR TRANSISTORS.

Subject Categories : Computer Programming and Software
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE