QCG-OMPI: MPI applications on grids

doi:10.1016/j.future.2010.11.015

QCG-OMPI: MPI applications on grids

2011-04-01

5

PRE

AI

DOI：10.1016/j.future.2010.11.015

Original

Original request for help

Save

Abstract

En 中文

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 programming, communication and execution middleware called QCG-OMPI. We then present how applications can make use of the capabilities of QCG-OMPI by presenting two typical, parallel applications: a geophysics application combining collective operations and a master-worker scheme, and a linear algebra application. (C) 2010 Elsevier B.V. All rights reserved.

Keywords:

Grid computing

MPI

Topology-aware middleware

Applications

Dense linear algebra

Collective communications

Master-worker

QCG-OMPI: MPI applications on grids

Abstract

Journal

Organization