Parallel multigrid solvers using OpenMP/MPI hybrid programming models on multi-core/multi-socket clusters

Authors:
Kengo Nakajima
Affiliations:
Information Technology Center, The University of Tokyo, Tokyo, Japan
Venue:
VECPAR'10 Proceedings of the 9th international conference on High performance computing for computational science
Year:
2010

Citing 4
Cited 1

Domain decomposition: parallel multilevel methods for elliptic partial differential equations

Domain decomposition: parallel multilevel methods for elliptic partial differential equations
Multigrid

Multigrid
Patterns for parallel programming

Patterns for parallel programming
Flat MPI vs. Hybrid: Evaluation of Parallel Programming Models for Preconditioned Iterative Solvers on "T2K Open Supercomputer

ICPPW '09 Proceedings of the 2009 International Conference on Parallel Processing Workshops

New strategy for coarse grid solvers in parallel multigrid methods using OpenMP/MPI hybrid programming models

Proceedings of the 2012 International Workshop on Programming Models and Applications for Multicores and Manycores

Quantified Score

Hi-index	0.00

Visualization

Abstract

OpenMP/MPI hybrid parallel programming models were implemented to 3D finite-volume based simulation code for groundwater flow problems through heterogeneous porous media using parallel iterative solvers with multigrid preconditioning. Performance and robustness of the developed code has been evaluated on the "T2K Open Supercomputer (Tokyo)" and "Cray- XT4" using up to 1,024 cores through both of weak and strong scaling computations. OpenMP/MPI hybrid parallel programming model demonstrated better performance and robustness than flat MPI with large number of cores for illconditioned problems with appropriate command lines for NUMA control, first touch data placement and reordering of the data for contiguous "sequential" access to memory.