An Integrated Approach for Quality of Service in Cluster Networks

多处理器互连的设计主要是为了提供高吞吐量和低延迟的尽力而为的流量。对于处理节点架构和通信软件来说也是如此。然而，随着越来越多地使用这些系统（特别是集群）的交互式应用，如多媒体，Web服务器和电子商务，可预测的通信性能，称为服务质量（QoS），已成为一个主要的关注。这些应用中的许多要求保证通信延迟和带宽，除了低延迟和高吞吐量。本研究的主要目的是为集群系统设计一个端到端的通信基础设施，以支持具有不同QoS要求的不同应用。研究活动包括：（1）路由器体系结构设计和评估，以提供可预测的高性能;（2）网络接口和软件消息层支持，以根据QoS要求将流量注入/弹出网络;以及（3）将这些功能传播到应用程序级别的CPU调度机制。本研究建议将这三个组件无缝集成，以提供一个高性能的QoS保证的通信架构。

Multiprocessor interconnects have been designed primarily to provide highthroughput and low latency for best-effort traffic. This is true forprocessing node architectures and communication software as well. However,with the increasing use of these systems (clusters in particular) forinteractive applications such as multimedia, web servers and electroniccommerce, predictable communication performance, called Quality of service(QoS), has become a major concern. Many of these applications requireguaranteed communication delay and bandwidth, in addition to low latencyand high throughput. The main focus of this research is to design anend-to-end communication infrastructure for a cluster system to supportdifferent applications with varying QoS requirements. The researchactivities include (1) router architecture design and evaluation to providepredictable and high performance; (2) network interface and softwaremessaging layer support to inject/eject traffic into/from the network asper QoS requirements; and (3) CPU scheduling mechanisms that propagatethese capabilities up to the application level. The research proposes toseamlessly integrate these three components to provide a high performancecommunication architecture with QoS guarantees.