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Many existing MPI-2 one-sided communication implementations are built on top of MPI send/receive operations. Although this approach can achieve good portability, it suffers from high communication overhead and dependency on remote process for communication progress. To address these problems, the paper proposes a high performance MPI-2 one-sided communication design over the InfiniBand Architecture. The design has been implemented based on MPICH2 over InfiniBand. They present detailed design issues for this approach and perform a set of micro-benchmarks to characterize different aspects of its performance. The performance evaluation shows that compared with the design based on MPI send/receive, the design can improve throughput up to 77%, and reduce lantency and synchronization overhead up to 19% and 13%, respectively.

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Format:PDFSize:102 KB
Date:Jan 2008
Pages:8

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