Quality of Service (QoS) Router Architectures for Cluster Interconnects

越来越多地，集群和局域网互连网络被要求支持分布式访问多媒体数据集的服务质量（QoS）的保证。本研究的目的是开发有效的架构解决方案，使集群/局域网互连网络中的多媒体流量的QoS保证。研究工作的核心挑战是开发有效的高速QoS调度器，能够在几十纳秒内跨大量的多媒体连接做出决策：QoS调度决策在直通延迟。这些目标将被追求的设计和详细的模拟的架构优化的单芯片路由器的多媒体应用。路由器架构的创新方面涉及一种新的优先级偏置方案和使用流量控制进行动态带宽分配。围绕这些技术构建了新的缓冲、带宽分配和流量控制方案。该计划的重要研究贡献将包括（一）路由器架构，支持QoS调度在切虽然lavier，（二）有效的架构技术，用于构建高速路由器的理解，和（二）解决方案，高速硬件资源管理和调度的难题。

Increasingly, cluster and LAN interconnection networks are being called upon to support distributed access to multimedia data sets with quality of service (QoS) guarantees. The objective of this research is to develop effective architectural solutions that enable QoS guarantees for multimedia traffic in cluster/LAN interconnection networks. The core challenge of the research work is to develop effective high speed QoS schedulers capable of making decisions across a large number of multimedia connections in tens of nanoseconds: QoS scheduling decisions at cut-through latencies. These objectives will be pursued by the design and detailed simulation of the architecture of a single-chip router optimized for multimedia applications. The innovative aspects of the router architecture concern a novel priority biasing scheme and the use of flow controlfor dynamic bandwidth allocation. Around these techniques are constructed new buffering, bandwidth allocation, and flow control schemes. Important research contributions of the program will include (i) router architectures that support QoS scheduling at cut-though latencies, (ii) understanding of effective architectural techniques for constructing high speed schedulers, and (ii) solutions to difficult problems of high speed hardware resource management and scheduling.