Optimisation of a Parallel Multigrid Solver for HPC Simulations - Jungblut, Thomas
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The book starts with an introduction to equation solvers and how computational work can be distributed on High Performance Computers. In the following chapters a state-of-the-art Multigrid Solver is investigated and possible improvements are discussed. This solver is designed to solve the Navier-Stokes equation in two steps. In this solver, an intermediate velocity is computed via the Chorins projection using pressure values from a previous step. Secondly a pressure correction is made by using a pressure Poisson equation. The improved solver is tested against the original version in several…mehr

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Produktbeschreibung
The book starts with an introduction to equation solvers and how computational work can be distributed on High Performance Computers. In the following chapters a state-of-the-art Multigrid Solver is investigated and possible improvements are discussed. This solver is designed to solve the Navier-Stokes equation in two steps. In this solver, an intermediate velocity is computed via the Chorins projection using pressure values from a previous step. Secondly a pressure correction is made by using a pressure Poisson equation. The improved solver is tested against the original version in several scenarios that demonstrate an increase of speed up to a factor of 65. The final chapter provides the reader with some ideas on how the performance of a Multigrid Solver could be further improved.
Autorenporträt
Thomas Jungblut holds several BSc¿s as well as a MSc in Engineering from Technical University of Munich. As a Data Scientist he worked for a Software company, building and supporting advanced analytics for Transportation Management Systems. He is currently employed as Data Scientist at an international engineering company.