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Designing scalable and efficient Message Passing Interface (MPI) implementations for emerging cluster interconnects such as VIA-based networks and InfiniBand are important for building next generation clusters. In this paper, we address the scalability issue in the implementation of MPI over VIA by on-demand connection management mechanism. The on-demand connection management is designed to limit the use of resources to what applications absolutely require.We address the design issues of incorporating the ondemand connection mechanism into an implementation of MPI over VIA. A complete implementation was done for MVICH over both cLAN VIA and Berkeley VIA. Performance evaluation on a set of microbenchmarks and NAS parallel benchmarks demonstrates that the on-demand mechanism can increase the scalability of MPI implementations by limiting the use of resources as needed by applications. It also shows that the on-demand mechanism delivers comparable or better performance as the static mechanism in which a fully-connected process model usually exists in the MPI implementations. These results demonstrate that the on-demand connection mechanism is a feasible solution to increase the scalability of MPI implementations over VIA-and InfiniBand-based networks.

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Investigating the performance of two programming models for clusters of SMP PCs

Cappello

Richard

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Proceedings Sixth International Symposium on High-Performance Computer Architecture. HPCA-6 (Cat. No.PR00550)

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Cited by 19 publications

References 7 publications

Impact of level 2 cache and memory subsystem on the scalability of clusters of small-scale SMP servers

Impact of level 2 cache and memory subsystem on the scalability of clusters of small-scale SMP servers

Impact of on-demand connection management in MPI over VIA

Investigating the performance of two programming models for clusters of SMP PCs

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