基于多核系统的大规模城市交通仿真平台设计

Based on Multi-core Large Scale Urban Traffic Simulate Foundation

随着我国城市交通堵塞的日益严重,有必要对汽车流量及其特性进行调查研究、分析预测。随着多核平台的普及,借助多CPU计算机平台对系统进行仿真研究,对仿真输出结果的分析、对比和评估来获得系统行为表现,是一种高效且经济可行的方法。多内核是指在一枚处理器中集成两个或多个完整的计算引擎(内核)。操作系统通过划分任务,线程应用能够充分利用多个执行内核,并可在特定的时间内执行更多任务。在多处理器平台上,OS可调度多个线程至不同的处理器运行以提高系统的运行效率。"道路交通仿真系统"借助该类平台通过多线程技术实现对交通运动随时间和空间的变化进行高效跟踪描述,对道路运输系统及其各组成部分的分析和评价中发挥了重要的作用。

Today, the traffic jam became seriously. The investigation and forecast are necessary to traffic flow and its characteristic's. Based on Multi-Core computer system, we can simulate most of traffic situations and it's more efficiently than before. Multi-Core means two or more unit be integrated in one chip. OS can recognize it can use it efficiently by multi-thread program. Compared single core, more in- structions can be executed in the same time slice. By this foundation, OS can distribute different CPU to charge different thread programs. Road traffic Simulate system is designed by multi-thread technology. It is useful to report road transport and its parts’ evaluation or analysis.