总线桥网扩展特性的研究

SCALABILITY OF BUS-BRIDGE NETWORKS

总线桥协议（ＢｕｓＢｒｉｄｇｅＰｒｏｔｏｃａｌ—ＢＢＰ）是用于构造并行计算机群的多计算机互连协议，它于１９９１年提出，其初衷是设计一种连接采用不同总线标准的计算设备和控制设备的中继协议．几年的研究和工程实践结果表明，基于ＢＢＰ构造可扩展并行计算机群系统能够获得较高的性能价格比．本文介绍了基于ＢＢＰ的总线桥多机互连网的工作方式，分析了总线桥互连网阻塞概率、建立时延及有效利用率等的关键特性参数及其相互关系，为可扩展并行机群系统ＢＢＰＳＰＣ的研制提供了理论依据．

This paper discusses the structure of the BBnet and some of its key feature parameters, such as the block probability of multicomputer interconnection network based on BBP, the time delay of set up, the effective utilization and relationships among them. These all provide theoretical basis for the building of a scalable parallel computer cluster system-BBP-SPC.