一种新型混合互连网络拓扑结构的分析与优化

Analysis and optimization of a new hybrid interconnection network topology

随着高性能互连网络规模的增大,如何通过互连网络拓扑结构的设计来提升系统的性能和降低物理开销成为了系统设计的关键之一。传统的拓扑结构(可分为直接网络和间接网络)在网络规模增加时,不能很好地折衷网络性能和物理开销的关系。2012年Roberto P等人提出一种新型混合的拓扑结构,结合了直接网络和间接网络的特点,有效考虑了物理开销和网络性能的折衷。在此基础上,将新型混合拓扑每一维上的唯一的一个间接网络优化为多个间接网络,经过理论分析和实验模拟新型混合拓扑结构优化后的混合拓扑结构以及较常用的传统拓扑结构,优化后的混合拓扑结构能够在提升网络性能的同时降低物理开销。

With the expansion of high-performance interconnect network, how to improve the per- formance and reduce the physical overhead of the system through the design of interconnection network topology has become crucial in system design. The traditional topology, which can be divided into direct and indirect networks,does not keep a perfect balance between network performance and the physical o- verhead when the network size increases. In 2012,Roberto proposed a new family of hybrid topology, which combines the features of the direct network and indirect network and makes a balance between network performance and physical overhead. Based on these,the new family of topology can be optimized to be hybrid topology which owns more than one indirect networks. Theory analysis and simulation of both the new family of hybrid topology and the traditional topologies show that the optimized new family of hybrid topology can improve network performance while reducing physical overhead.