Hybrid MPI-Thread implementation on a cluster of SMP nodes of a parallel simulator for the propagation of powdery mildew in a vineyard

Authors:
Gaël Tessier;Jean Roman;Guillaume Latu
Affiliations:
INRIA Futurs and LaBRI UMR 5800, ScAlApplix project, Université Bordeaux 1 and ENSEIRB, Talence, France;INRIA Futurs and LaBRI UMR 5800, ScAlApplix project, Université Bordeaux 1 and ENSEIRB, Talence, France;LSIIT UMR 7005, Université Strasbourg 1, Illkirch, France
Venue:
HPCC'06 Proceedings of the Second international conference on High Performance Computing and Communications
Year:
2006

Citing 2
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The design and analysis of spatial data structures

The design and analysis of spatial data structures
Parallel simulation of the propagation of powdery mildew in a vineyard

Euro-Par'05 Proceedings of the 11th international Euro-Par conference on Parallel Processing

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Abstract

This paper describes a new hybrid MPI-thread implementation of a parallel simulator for the propagation of a parasite in a vineyard. The model also considers the structure, the growth and the susceptibility of the plant. Two spatial scales are distinguished for the dispersal of the fungus. A realistic discrete model was used for the local and neighbouring dispersal, and a stochastic model integrates distribution laws for the long-range dispersal over the parcel. An algorithmic description of the new parallel simulator is given and real life numerical experiments on an IBM SP5 are provided, using up to 128 processors.