Seminar Details:

LANS Informal Seminar
"A Fast Mixed-Precision Strategy for Iterative GPU-Based Solution of the Laplace Equation"

DATE: November 29, 2011

TIME: 15:00:00 - 16:00:00
SPEAKER: Stefan Glimberg, PhD student at the Technical University of Denmark
LOCATION: Building 240, 1404-1405, Argonne National Laboratory

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.


Please send questions or suggestions to Jeffrey Larson: jmlarson at anl dot gov.