基于虚通道故障粒度划分的3D NoC容错路由器设计

发布时间：2018-04-25 07:29

本文选题：虚通道故障 + 粗粒度故障　；参考：《计算机研究与发展》2014年09期

【摘要】：深亚微米工艺下,路由器受制于制造缺陷及运行时的脆弱性,易发生虚通道(virtual channel,VC)永久性故障,从而引起通信故障,影响系统功能和性能.为了能够有效地容忍虚通道故障、保证系统性能及充分利用可用资源,将虚通道故障类型细分为粗粒度故障和细粒度故障,提出SVS(single VC sharing)路由器架构,通过将路由器端口两两分组,组内端口间实现单虚通道共享.当发生虚通道粗粒度故障时,使用组内相邻端口共享虚通道容错.当发生细粒度故障时,根据Slot State Table信息配置虚通道读/写指针的值,从而跳过故障Buffer槽实现容错.在无粗粒度故障情况下,共享虚通道还可用于负载平衡及容忍路由计算模块故障.实验结果表明:较其他已有的虚通道路由器,SVS路由器在3种不同的故障情况下均较大地降低了延时,提高了吞吐量.这表明SVS路由器可有效提高系统可靠性,保证了系统性能,充分利用了可用资源.
[Abstract]:Under deep submicron technology, routers are subject to manufacturing defects and operating vulnerabilities, and are prone to permanent failure of virtual channel VCs, thus causing communication failures and affecting system functions and performance. In order to tolerate virtual channel fault effectively, ensure system performance and make full use of available resources, the virtual channel fault type is subdivided into coarse-grained fault and fine-grained fault. The architecture of SVS(single VC sharing router is proposed. By grouping the router ports into two groups, a single virtual channel can be shared between the ports in the group. When coarse-grained virtual channel failure occurs, the virtual channel fault tolerance is shared using adjacent ports within the group. When a fine-grained fault occurs, the value of the virtual channel read / write pointer is configured according to the Slot State Table information, and the fault tolerance is realized by skipping the fault Buffer slot. In the case of no coarse-grained faults, shared virtual channels can also be used for load balancing and tolerant routing calculation module failures. The experimental results show that compared with other existing virtual channel routers, SVS routers can greatly reduce the delay and improve the throughput of the SVS routers under three different fault conditions. This shows that SVS router can effectively improve system reliability, ensure system performance and make full use of available resources.
【作者单位】：合肥工业大学计算机与信息学院;合肥工业大学电子科学与应用物理学院;
【基金】：国家自然科学基金项目(61274036,61106038) 安徽高校省级自然科学研究重点项目(KJ2010A269) 安徽省科技攻关项目(11010202190)
【分类号】：TN915.05

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