Low Latency Communication on DIMMnet-1 Network Interface Plugged into a DIMM Slot
Low Latency Communication on DIMMnet-1 Network Interface Plugged into a DIMM Slot
复制标题
插入 DIMM 插槽的 DIMMnet-1 网络接口上的低延迟通信
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
H. Amano
中科院分区：
文献类型：
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作者：
N. Tanabe;Y. Hamada;H. Nakajo;H. Imashiro;J. Yamamoto;T. Kudoh;H. Amano
DIMMnet-1是一款适用于PC集群的高性能网络接口，可直接插入PC的DIMM插槽。通过使用低延迟AOTF（Atomic On-The-Fly）发送和高带宽BOTF（Block On-The-Fly）发送，它可以克服标准I/O（如PCI总线）带来的开销。目前有两种类型的DIMMnet-1原型板（提供光和电网络接口），其中包含Martini网络接口控制器芯片。它们可以插入一个100 MHz的DIMM插槽的个人电脑与奔腾3，奔腾4或速龙处理器。AOTF在这个未完全调优的DIMMnet-1上的往返时间比Myrinet 2000快7.5倍。AOTF的势垒同步时间比SR 8000超级计算机快4倍。两节点间浮点和运算时间为1903 ns。这表明，DIMMnet-1为应用程序提供了希望，在这些应用程序中，由于频繁的数据交换，传统方法难以实现可扩展性能。
DIMMnet-1 is a high performance network interface for PC clusters that can be directly plugged into the DIMM slot of a PC. By using both low latency AOTF (Atomic On-The-Fly) sending and high bandwidth BOTF (Block On-The-Fly) sending, it can overcome the overhead caused by standard I/O such as the PCI bus. Two types of DIMMnet-1 prototypeboards (providing optical and electrical network interfaces) containing a Martini network interface controller chip are currently available. They can be plugged into a 100MHz DIMM slot of a PC with a Pentium-3, Pentium-4 or Athlon processor. The round-trip time for AOTF onthis incompletely tuned DIMMnet-1 is 7.5 times faster than Myrinet2000. The barrier synchronization time for AOTF is 4 times faster than that of an SR8000 supercomputer. Theinter-two-node floating sum operation time is 1903 ns. This shows that DIMMnet-1 holds promise for applications in which scalable performance with traditional approaches is difficult because of frequent data exchange.