Publication Type
Conference Paper
Book Title
Recent Advances in Parallel Virtual Machine and Message Passing Interface
Publication Date
Volume
4757
Conference Name
EuroPVM/MPI 2007
Conference Location
Paris, France
Conference Sponsor
Inria
Conference Date
-
Abstract
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.