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3D NoC关键通信部件容错方法研究综述 被引量:3
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作者 欧阳一鸣 孙成龙 +4 位作者 陈奇 梁华国 易茂祥 黄正峰 闫爱斌 《电子学报》 EI CAS CSCD 北大核心 2016年第12期3053-3063,共11页
三维片上网络通过硅通孔(Through Silicon Via,TSV)将多层芯片进行堆叠,具有集成密度大,通信效率高等特点,是片上多核系统的主流通信架构.然而,工艺偏差及物理缺陷所引发的错误和TSV良率较低等因素,使得三维片上网络面临严重的故障问题... 三维片上网络通过硅通孔(Through Silicon Via,TSV)将多层芯片进行堆叠,具有集成密度大,通信效率高等特点,是片上多核系统的主流通信架构.然而,工艺偏差及物理缺陷所引发的错误和TSV良率较低等因素,使得三维片上网络面临严重的故障问题.为保证通信效率,对三维片上网络关键通信部件进行容错设计必不可少.本文针对三维片上网络关键通信部件——路由器和TSV的故障和容错相关问题,从容错必要性、国内外研究现状、未来的研究方向和关键问题、以及拟提出的相关解决方案四个方面,展开深入探讨.为提高片上网络可靠性、保证系统高效通信提供一体化的解决方案. 展开更多
关键词 集成电路 三维片上网络 容错 TSV 路由器加固
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Model-based reinforcement learning for router port queue configurations
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作者 Ajay Kattepur Sushanth David Swarup Kumar Mohalik 《Intelligent and Converged Networks》 2021年第3期177-197,共21页
Fifth-generation(5G)systems have brought about new challenges toward ensuring Quality of Service(QoS)in differentiated services.This includes low latency applications,scalable machine-to-machine communication,and enha... Fifth-generation(5G)systems have brought about new challenges toward ensuring Quality of Service(QoS)in differentiated services.This includes low latency applications,scalable machine-to-machine communication,and enhanced mobile broadband connectivity.In order to satisfy these requirements,the concept of network slicing has been introduced to generate slices of the network with specific characteristics.In order to meet the requirements of network slices,routers and switches must be effectively configured to provide priority queue provisioning,resource contention management and adaptation.Configuring routers from vendors,such as Ericsson,Cisco,and Juniper,have traditionally been an expert-driven process with static rules for individual flows,which are prone to sub optimal configurations with varying traffic conditions.In this paper,we model the internal ingress and egress queues within routers via a queuing model.The effects of changing queue configuration with respect to priority,weights,flow limits,and packet drops are studied in detail.This is used to train a model-based Reinforcement Learning(RL)algorithm to generate optimal policies for flow prioritization,fairness,and congestion control.The efficacy of the RL policy output is demonstrated over scenarios involving ingress queue traffic policing,egress queue traffic shaping,and one-hop router coordinated traffic conditioning.This is evaluated over a real application use case,wherein a statically configured router proved sub optimal toward desired QoS requirements.Such automated configuration of routers and switches will be critical for multiple 5G deployments with varying flow requirements and traffic patterns. 展开更多
关键词 router port queues model-based reinforcement Learning(RL) network slicing
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簇式三维片上网络通信压力弱化策略 被引量:1
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作者 欧阳一鸣 王宇 +1 位作者 梁华国 黄正峰 《电子测量与仪器学报》 CSCD 2013年第5期421-428,共8页
针对3D NoC中TSV衬垫面积大,TSV利用率低的特点,采用4个plane router共享一个TSV router的簇式结构,分时共享TSV;针对路由器故障,则提出一种在输入端口和输出端口间建立旁路的机制,当plane router的缓冲区和交叉开关故障时,数据包由旁... 针对3D NoC中TSV衬垫面积大,TSV利用率低的特点,采用4个plane router共享一个TSV router的簇式结构,分时共享TSV;针对路由器故障,则提出一种在输入端口和输出端口间建立旁路的机制,当plane router的缓冲区和交叉开关故障时,数据包由旁路转发;对于TSV router故障,则通过增加数据分配器和多路选择器,进行加固;为弱化过热点,提出新的压力弱化模型,根据其自身通信量以及所处的位置,动态调整路由方向。仿真结果表明,与传统XYZ路由相比,无故障时平均网络延时减少21%~27%,有故障时减少20%~39%,吞吐率比minTSV提高约20%。 展开更多
关键词 旁路机制优化 三维簇式网络 TSV router加固 压力弱化模型
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