DOUG - Domain decomposition On Unstructured Grids

Abstract

DOUG is a black box parallel iterative solver for finite element systems arising from elliptic partial differential equations. Used in conjunction with a finite element discretisation code, DOUG will solve the resulting linear systems using an iterative method and provides a range of powerful domain decomposition preconditioners. The code is designed to run effectively in parallel on virtually any machine that supports MPI. The matrix-vector operations arising in the iterative method are parallelised using graph partitioning software and additive Schwarz preconditioners can be automatically constructed by DOUG using only minimal input. In this first release a full additive Schwarz preconditioner with automatically generated coarse grid is provided in 2D only. A version without the coarse grid is available in 3D.

DateOfInformation

Fri Jun 12 13:03:33 1998

Domain

Numerical Programs and Routines!Differential and Integral Equations!Partial differential equations

Name

DOUG - Domain decomposition On Unstructured Grids

TargetEnvironment

The code is designed to run effectively in parallel on virtually any machine that supports MPI. DOUG has been succesfully used on a number of computer architectures, including SGI, SUN, SUN Solaris, IBM SP/2, Intel i860 and LINUX. It may well work on other systems.

Version

1.96

Webpage

http://www.maths.bath.ac.uk/%7Emjh/doug/

ContactIs

Mark Hagger