The Architecture and Performance of WMPI II

摘要

WMPI II is the only commercial implementation of MPI 2.0 that runs on both Windows and Linux clusters. It evolved from the first ever Windows version of MPI, then a port of MPICH, but is now fully built from its own code base. It supports both 32 and 64 bit versions and mixed clusters of Windows and Linux nodes. This paper describes the main design decisions and the multithreaded, non-polling architecture of WMPI II. Experimental results show that, although WMPI II has figures comparable to MPICH and LAM for latency and bandwidth, most application benchmarks perform significantly better when running on top of WMPI II.