16 000–64 000 B pMTU experiments with simulation: The case for super jumbo frames at Supercomputing ’05

This paper presents a case study including the results and preliminary simulations for a series of Ethernet-based Xnet “super jumbo frame” (SJF) experiments conducted prior to and at Supercomputing ’05, for up-to-64 000 B path MTU. As far as we are aware, the first public supercomputing demonstration of a router passing 64 000 B frames was performed in our Xnet SJF booth. While Gigabit Ethernet based network architectures typically show reduced zero payload node latency performance relative to interconnect solutions (Myrinet, SP Switch and InfiniBand), some with higher path MTU equivalent, Ethernet continues to be the most widely deployed and may remain so for the forseeable future. Cumulative jumbo frame research spanning several years, combined with theoretical calculations and extrapolations from experimental data obtained during Supercomputing ’05 indicates the possible practical feasibility of SJF-based network mechanics as a potential means to realize practical long term performance goals for high throughput streaming. Some of the lessons and implications of the SJF approach are discussed in relation to the evolution of novel network architectures, particularly in relation to explicit path systems for the high performance computing community, pending deployment of 40 and/or 100 Gb Ethernet.     

SPM-D11模块在柴油发电机组控制系统中的应用

详细介绍了数字发电系统的并网控制器SPM-D11的基本原理和主要功能,结合在石油钻机电传动系统工程中的应用,详细分析了SPM-D11在MTU发电机组并网中的参数应用及现场测试的一些数据。由实际测得的数据和在CAT35系列机组中的成功应用案例表明,该方法是有效可行的。为石油钻机动力配置提供了一种新的思路。