Seminars at the Faculty of Informatics

A hybrid numerical algorithm for fast and efficient spectral wave modeling: the combination of a block wavefront approach with a pipelined parallel approach

The Faculty of Informatics is pleased to announce a seminar given by Menno Genseberger

DATE: Monday, April 13th 2015
PLACE: USI Lugano Campus, room SI-006, Informatics building (Via G. Buffi 13)
TIME: 15.30

ABSTRACT:
In the Netherlands, for assessments of the primary water defences, operational forecasting of flooding, and water quality studies in coastal areas and shallow lakes wave modelling with the third generation wave simulation software SWAN has become a main ingredient. Computational times of SWAN are relatively high. Therefore we investigated the parallel efficiency of the current MPI and OpenMP versions of SWAN. The OpenMP version has almost linear parallel scaling on shared memory systems. For faster computations more nodes are needed, but the MPI version is not that efficient within a single node. Therefore, in this talk we propose a hybrid version of SWAN. It combines the efficiency of the current OpenMP version on shared memory with the capability of the current MPI version to distribute memory over nodes. We describe the numerical algorithm. With initial numerical experiments we show the potential of this hybrid version. Parallel I/O, further optimization, and massively parallel behavior will be subject of future research

BIO:

  • Master Mathematics (main subject Numerical Mathematics) and Physics at University of Amsterdam 1990-1997
  • Ph.D. Numerical Mathematics Utrecht University and CWI (National Research Institute for Mathematics and Computer Science in the Netherlands) 1997-2001
  • WL | Delft Hydraulics 2002-2007
  • Deltares 2008-present

HOST: Prof. Rolf Krause