[1]方木云,王俊,王超. 随机步长无向环网通信延迟的研究[J].计算机技术与发展,2016,26(10):27-31.
　FANG Mu-yun,WANG Jun,WANG Chao. Research on Communication Delay of Random-step Undirected Loop Networks[J].,2016,26(10):27-31.
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 随机步长无向环网通信延迟的研究()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
26
期数:
2016年10期
页码:
27-31
栏目:
智能、算法、系统工程
出版日期:
2016-10-10

文章信息/Info

Title:
 Research on Communication Delay of Random-step Undirected Loop Networks
文章编号:
1673-629X（2016)10-0027-05
作者:
 方木云; 王俊; 王超
 安徽工业大学 计算机科学与技术学院
Author(s):
 FANG Mu-yun; WANG Jun; WANG Chao
关键词:
 ; 无向环网; 固定步长; 随机步长; 通信延迟
Keywords:
 ; undirected loop networks; fixed-step; random-step; communication  ; delay
分类号:
TP393
文献标志码:
A
摘要:
 高性能计算机( HPC)系统期望尽可能低的通信延迟和建造成本。传统固定步长拓扑已经无法降低通信延迟和建造成本，如固定步长环网无法突破Wong和Coppersmith给出的下界；高节点度拓扑能进一步降低延迟，但增加的交换机和物理链路提高了建造和运营成本。针对这两个缺点，采用随机步长构造方法来生成一种新型的无向环网，避免高节点度的同时，将减少节点间步长的长度从而降低通信延迟作为目标。通过仿真实验分别对无向环网随机步长的直径、平均距离和固定步长的直径下界、平均距离下界进行比较。结果表明：在一定节点度范围内，随机步长无向环网得到的值小于传统固定步长环网得到的值。因此，随机步长拓扑可成为下一代高性能计算机潜在的拓扑结构。
Abstract:
 High-performance computer system expects the lowest possible communication delays and construction costs. Traditional fixed-step topology has been unable to reduce communication latency and construction costs. For example,fixed-step loop networks cannot break through the lower bound given by Wong and Coppersmith,and high degree of topological node can further reduce latency,but in-creased switch and physical links improve the construction and operating costs. In view of two shortcomings,random-step is used to con-struct a new type of undirected loop networks which can reduce the length of steps between nodes to reduce the communication delay as the destination,at the same time can avoid high degree of node. Respectively compares diameter and average distance of random-step un-directed loop networks as well as lower diameter and average lower distance of fixed-step through simulation experiments. The results show that within a certain range of the node,the value of the random-step to the ring obtained less than the value of traditional fixed-step ring obtained. Thus,random-step topology may be the next generation of high-performance computer underlying topology.

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更新日期/Last Update: 2016-11-25