The second generation FETI methods and their application
to the parallel solution of computational mechanics
and acoustic scattering problems
Charbel Farhat
Department of Aerospace Engineering Sciences
and Center for Aerospace Structures
University of Colorado at Boulder
- DATE : vendredi 23/04/99
- HEURE et LIEU : 10h30 en salle RE002
- RESUME/ABSTRACT :
the FETI algorithms are a family of numerically scalable domain
decomposition methods. They have been designed in the early 1990's
for solving iteratively and on parallel machines, large-scale systems
of equations arising from the finite element discretization of solid
mechanics, elastodynamics, and acoustic scattering problems, and for
analyzing complex systems obtained from the assembly of subsystems
with incompatible discrete interfaces.
In this talk, we present the second generation of these methods that
operate more efficiently on large numbers of subdomains, offer greater
robustness, better performance, and more flexibility for
implementation on a wider variety of computational platforms. We also
report on the application and performance of these methods for the
solution of geometrically nonlinear structural mechanics problems, and
exterior Helmholtz problems. We discuss key aspects of their
implementation on shared and distributed memory parallel processors,
benchmark them against optimized sparse solvers, and highlight their
potential with the solution of a family of computational mechanics
problems with several million degrees of freedom. We also report on
some recent performance results obtained on the ASCI-RED teraflopper.
Retour:
Liste des séminaires du Projet Sinus