Accurate High Performance Multigrid Solvers on GPUs

Accurate High Performance Multigrid Solvers on GPUs

Robert Strzodka

This talk discusses the multiple aspects that require attention in order to obtain accurate and fast solutions of partial differential equations on GPUs. In particular, we discuss parallelism, discretization, multigrid solver, preconditioners, mixed-precision and data layout of multi-valued containers. The focus lies on demonstrating how competing aspects must be balanced against each other for best accuracy and performance.