Wide-area implementation of the Message passing interface

摘要

The Message Passing Interface(MPI)can be used as a portable, high-performance pro- gramming model for wide-area computing systems. The wide-area environment introduces challenging problems for the MPI implementor, due to the heterogeneity of both the under- lying physical infrastructure and the software environment at different sites. In this article, we describe an MPI implementation that incorporates solutions to these problems. This imple- mentation has been constructed by extending the Argonne MPICH implementation of MPI to use communication services provided by the Nexus communication library and authentica- tion, resource allocation, process creation/management, and information services provided by the I-Soft system(initially)and the Globus metacomputing toolkit(work in progress).