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Exploring IBA Design Space for Improved Performance

机译:探索IBA设计空间以提高性能

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InfiniBand Architecture (IBA) is envisioned to be the default communication fabric for future system area networks (SANs) or clusters. However, IBA design is currently in its infancy since the released specification outlines only higher level functionalities, leaving it open for exploring various design alternatives. In this paper, we investigate four corelated techniques for providing high and predictable performance in IBA. These are: 1) using the Shortest Path First (SPF) algorithm for deterministic packet routing, 2) developing a multipath routing mechanism for minimizing congestion, 3) developing a selective packet dropping scheme to handle deadlock and congestion, and 4) providing multicasting support for customized applications. These designs are implemented in a pipelined, IBA-style switch architecture, and are evaluated using an integrated workload consisting of MPEG-2 video streams, best-effort traffic, and control traffic on a versatile IBA simulation testbed. Simulation results with 15-node and 30-node irregular networks indicate that the SPF routing, multipath routing, packet dropping, and multicasting schemes are quite effective in delivering high and assured performance in clusters.
机译:InfiniBand体系结构(IBA)被设想为将来的系统区域网络(SAN)或群集的默认通信结构。但是,由于发布的规范仅概述了更高级别的功能,因此IBA设计目前还处于起步阶段,这使其可以探索各种设计替代方案。在本文中,我们研究了在IBA中提供较高且可预测的性能的四种相关技术。它们是:1)使用最短路径优先(SPF)算法进行确定性的数据包路由,2)开发多路径路由机制以最小化拥塞,3)开发选择性的数据包丢弃方案以处理死锁和拥塞,以及4)提供多播支持用于定制应用程序。这些设计以流水线式IBA风格的交换机架构实现,并使用包含MPEG-2视频流,尽力而为流量和控制流量的集成工作负载在通用IBA仿真测试台上进行评估。 15个节点和30个节点的不规则网络的仿真结果表明,SPF路由,多路径路由,数据包丢弃和多播方案对于在群集中提供高而有保证的性能非常有效。

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