PM2: High Performance Communication Middleware for Heterogeneous Network Environments

Abstract

This paper introduces a high performance communication middle layer, called PM2, for heterogeneous network environments. PM2 currently supports Myrinet, Ethernet, and SMP. Binary code written in PM2 or written in a communication library, such as MPICH-SCore on top of PM2, may run on any combination of those networks without re-compilation. According to a set of NAS parallel benchmark results, MPICH-SCore performance is better than dedicated communication libraries such as MPICH-BIP/SMP and MPICH-GM when running some benchmark programs.

Single IP Address Cluster for Internet Servers

“…PM/Myrinet [16] is used as the communication library. In order to use PM/Myrinet in SAPS, we made extensions to PM/Myrinet.…”

“…An applications node provides the normal TCP socket interfaces which use the TCP/IP protocol stack at the I/O server. The I/O server and the applications nodes communicate with each other using a reliable highperformance communication protocol called PM [16] in the Myrinet network.…”

“…Because the communication between the I/O server and the applications nodes is handled by the PM high performance library, the TCP protocol does not encounter the packet loss caused at the bottleneck router. Although PM may encounter the congestion instead of the TCP protocol, PM is more tolerant to heavy traffic and congestion in a cluster than the TCP protocol [16]. Thus, all the data from the applications nodes is sent to the I/O server with sufficient bandwidth, which overcomes the network performance issue with the TCP/IP protocol in a cluster.…”

Next-generation visual supercomputing using PC clusters with volume graphics hardware devices

“…We wrote all of our test programs in C++ language using MPICH-SCore. SCore [17] is a Linux based operating system developed at the Parallel and Distributed System Software Laboratory of the Real World Computing Partnership (RWCP) in Japan, which employs:…”

Performance evaluation of deterministic routings, multicasts, and topologies on RHiNET-2 cluster

“…However, it provides a simple re-writable routing table and sixteen virtual channels, which enable us to implement various kinds of deterministic routings and topologies. Since RHiNET-2 provides MPI library via a low-level communication library PMv2 [20], a large number of scientific applications can be executed.…”