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Issue No. 01 - January/February (2005 vol. 25)
ISSN: 0272-1732
pp: 20-29
Jiuxing Liu , IBM T.J. Watson Research Center
Amith Mamidala , The Ohio State University
Abhinav Vishnu , The Ohio State University
Dhabaleswar K. Panda , The Ohio State University
InfiniBand host channel adapters (HCAs) with PCI Express achieve 20 to 30 percent lower latency for small messages compared with HCAs using 64-bit, 133-MHz PCI-X interfaces. PCI Express also improves performance at the MPI level, achieving a latency of 4.1 ?s for small messages. It can also improve MPI collective communication and bandwidth-bound MPI application performance.

D. K. Panda, A. Mamidala, J. Liu and A. Vishnu, "Evaluating InfiniBand Performance with PCI Express," in IEEE Micro, vol. 25, no. , pp. 20-29, 2005.
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