Improving MPI support for applications on hierarchically distributed resources

Authors:
Raúl López;Christian Pérez
Affiliations:
IRISA, INRIA, Rennes Cedex, France;IRISA, INRIA, Rennes Cedex, France
Venue:
PVM/MPI'07 Proceedings of the 14th European conference on Recent Advances in Parallel Virtual Machine and Message Passing Interface
Year:
2007

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Abstract

Programming non-embarrassingly parallel scientific computing applications such as those involving the numerical resolution of system of PDEs using mesh based methods for grid computing environments is a complex and important issue. This work contributes to this goal by proposing some MPI extensions to let programmers deal with the hierarchical nature of the grid infrastructure thanks to a tree representation of the processes as well as the corresponding extension of collective and point-to-point operations. It leads in particular to support N×M communications with transparent data redistribution.