Measuring MPI latency variance
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Proceedings - Conference on Local Computer Networks, LCN
RMPP (reliable message passing protocol) is a lightweight transport protocol designed for clusters that provides end-to-end flow control and fault tolerance. In this article, presentations were made that compares RMPP to TCP, UDP, and "Utopia". The article compared the protocols on four benchmarks: bandwidth, latency, all-to-all, and communication-computation overlap. The results have shown that message-based protocols like RMPP have several advantages over TCP including ease of implementation, support for computation/communication overlap, and low CPU overhead.
Proposed for publication in the International Journal of High Performance Computing Applications - Special Issue: Best Papers of EuroPVMMPI 2002.
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This paper analyzes the scalability limitations of networking technologies based on the Virtual Interface Architecture (VIA) in supporting the runtime environment needed for an implementation of the Message Passing Interface. The authors present an overview of the important characteristics of VIA and an overview of the runtime system being developed as part of the Computational Plant (Cplant) project at Sandia National Laboratories. They discuss the characteristics of VIA that prevent implementations based on this system to meet the scalability and performance requirements of Cplant.