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arXiv · 1204.4086

Hybrid MPI/StarSs - a case study

Jose Gracia·Christoph Niethammer·Manuel Hasert·Steffen Brinkmann·Rainer Keller·Colin W. Glass
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Abstract

Hybrid parallel programming models combining distributed and shared memory paradigms are well established in high-performance computing. The classical prototype of hybrid programming in HPC is MPI/OpenMP, but many other combinations are being investigated. Recently, the data-dependency driven, task parallel model for shared memory parallelisation named StarSs has been suggested for usage in combination with MPI. In this paper we apply hybrid MPI/StarSs to a Lattice-Boltzmann code. In particular, we present the hybrid programming model, the benefits we expect, the challenges in porting, and finally a comparison of the performance of MPI/StarSs hybrid, MPI/OpenMP hybrid and the original MPI-only versions of the same code.

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Jose Gracia, Christoph Niethammer, Manuel Hasert, Steffen Brinkmann, Rainer Keller, Colin W. Glass. 2012-04-18. Hybrid MPI/StarSs - a case study. https://arxiv.org/abs/1204.4086

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