基于OPNET的片上网络路由算法的建模与仿真

Modeling and Simulation of On-Chip Network Routing Algorithm Based on OPNET

随着电路集成程度的快速发展,集成电路中传输的数据量也随之增加。传统的传输总线受带宽不足的影响,传输延时明显增大,片上网络很好的解决了这一问题。片上网络路由算法的设计决定了片上网络的性能,对一种自适应性片上网络路由算法进行建模及仿真,来分析其性能指标。首先介绍了片上网络的发展与优势;然后提出了一种高效的自适应路由算法并对其进行了详细阐述;之后结合最常用的网络拓扑结构,应用OPNET仿真软件建立三层仿真模型;最后对上述模型进行仿真,观察在大量数据包涌入网络时,所提算法处理数据包选择路径的能力。在延时性能上,所建立的路由模型远远优于传统的确定性路由算法。

With the rapid development of circuit integration,the amount of data in the circuit also increases.The on-chip network can solve the problem of transmission delay caused by large data volume and insufficient bandwidth.The design of the on-chip network routing algorithm determines the performance of the on-chip network.This paper modeled and simulated an adaptive on-chip network routing algorithm to analyze its performance indicators.This paper first introduced the development and elaborates of the on-chip network,then proposed an efficient adaptive routing algorithm and elaborated it,and finally combined the most commonly used network topology,using OPNET simulate software to build a three-layer simulation model.The model was simulated to observe the ability of the algorithm to process data packet transmission when a large number of data packets flooded into the network.In terms of delay performance,the routing model established in this paper is far superior to the traditional deterministic routing algorithm.