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Title: An Evaluation of Open MPI's Matching Transport Layer on the Cray XT


Richard L. Graham, Ron Brightwell, Brian Barrett, George Bosilca, Jelena Pjevsivac-Grbovic


Open MPI was initially designed to support a wide variety of high-performance networks and network programming interfaces. Recently, Open MPI was enhanced to support networks that have full support for MPI matching semantics. Previous Open MPI efforts focused on networks that require the MPI library to manage message matching, which is sub-optimal for some networks that inherently support matching. We describes a new matching transport layer in Open MPI, present results of micro-benchmarks and several applications on the Cray XT platform, and compare performance of the new and the existing transport layers, as well as the vendor-supplied implementation of MPI.

Presented: EuroPVM/MPI '07, September 30th - October 3rd, 2007, Paris, France.


euro-pvmmpi-2007-cray-mtl.pdf (PDF)

Bibtex reference:

author = {Richard L. Graham and Ron Brightwell and Brian Barrett and George Bosilca and  Pje{s}ivac-Grbovi\'{c}},
title = {An Evaluation of Open MPI's Matching Transport Layer on the Cray XT},
journal = {Recent Advantages in Parallel Virtual Machine and Message Passing Interface. 14th European PVM/MPI User's Group Meeting},
location = {Paris, France},
year = 2007,
month = {Oct}