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LANS Informal Seminar: Stefan Glimberg
November 29, 2011 @ 15:00 CST
Seminar Title: A Fast Mixed-Precision Strategy for Iterative GPU-Based Solution of the Laplace Equation
Speaker: Stefan Glimberg, PhD student at the Technical University of Denmark
Date/Time: 2011-11-29 15:00
Location: Building 240, 1404-1405
Description:
Our work is concerned with the development of a generic high-performance library for scientific computing. The library is targeted for assembling flexible-order finite-difference solvers for PDEs. Our goal is to enable fast solution of large PDE systems, fully exploiting the massively parallel architecture of Graphics Processing Units. We will detail a strategy for an iterative mixed-precision defect correction method, with p-multigrid preconditioning. We present a case study of the fully nonlinear potential flow equations, in which the bottleneck problem is finding the solution of a Laplace equation. Such large scale simulations can be of great value in coastal and offshore engineering application.