通信优化技术在电力终端多线程系统的应用

Application of communication optimization technology in multithread system of power terminal

多线程技术在电力终端多核芯片的广泛应用,使电力终端系统的系统通信时间显著上升,电力应用的线程数也随之增加,线程间通信更加频繁。针对系统通信时间开销问题和线程间开销问题,首先引入通信流水线技术,通信流水线技术能让相同线程内的通信和运算同时工作,同时还可以降低通信传输时间;此外引入消息集聚技术将通信通道集聚,以提高单位时间数据传输量并减少通信次数。为降低线程切换次数及减少系统同步时间,引入通信队列技术;然而,线程间的依赖关系会影响通信队列技术的使用,最后提出一种面向依赖环的优化方法,该方法能够有效解决依赖环带来的限制,并提升通信队列利用率及线程间通信效率。

The wide application of multi-threading technology in power terminal multi-core chips has significantly increased the system communication time of the power terminal system.The number of threads in power applications has also increased,and the communication between threads has become more frequent.Aiming at the problem of system communication time overhead and inter-thread overhead,this article first introduces communication pipeline technology.The communication pipeline technology allows communication and calculations in the same thread to work at the same time,while also reducing communication transmission time;In addition,this article also introduces message aggregation technology,the communication channels are gathered to increase the amount of data transmission per unit time and reduce the number of communications.In order to reduce the number of thread switching and reduce system synchronization time,the communication queue technology is also introduced;however,the dependency between threads will affect the use of communication queue technology.Finally,an optimization method is proposed for the dependency loop,which can effective solve the limitations caused by the dependency ring,and improve the utilization of communication queues and the efficiency of communication between threads.