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QCG-OMPI: MPI Applications on Grids

Emmanuel Agullo 1, 2 Camille Coti 3, 4 Thomas Herault 3, 4 Julien Langou 5 Sylvain Peyronnet 3 Ala Rezmerita 4 Franck Cappello 3, 4 Jack Dongarra 6 
1 HiePACS - High-End Parallel Algorithms for Challenging Numerical Simulations
LaBRI - Laboratoire Bordelais de Recherche en Informatique, Inria Bordeaux - Sud-Ouest
4 GRAND-LARGE - Global parallel and distributed computing
LRI - Laboratoire de Recherche en Informatique, LIFL - Laboratoire d'Informatique Fondamentale de Lille, UP11 - Université Paris-Sud - Paris 11, Inria Saclay - Ile de France, CNRS - Centre National de la Recherche Scientifique : UMR8623
Abstract : Computational grids present promising computational and storage capacities. They can be made by punctual aggregation of smaller resources (i.e., clusters) to obtain a large-scale supercomputer. Running general applications is challenging for several reasons. The first one is inter-process communication: processes running on different clusters must be able to communicate with one another in spite of security equipments such as firewalls and NATs. Another problem raised by grids for communication-intensive parallel application is caused by the heterogeneity of the available networks that interconnect processes with one another. In this paper we present how QCG-OMPI can execute efficient parallel applications on computational grids. We first present an MPI programmation, communication and execution middleware called QCG-OMPI. We then present how applications can make use of the capabilities of QCG-OMPI by presented two typical, parallel applications: a geophysics application combining collective operations and a master-worker scheme, and a linear algebra application
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Submitted on : Monday, December 20, 2010 - 6:10:16 PM
Last modification on : Sunday, November 20, 2022 - 3:26:44 AM

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Emmanuel Agullo, Camille Coti, Thomas Herault, Julien Langou, Sylvain Peyronnet, et al.. QCG-OMPI: MPI Applications on Grids. Future Generation Computer Systems, 2010, ⟨10.1016/j.future.2010.11.015⟩. ⟨inria-00548895⟩



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