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Alleviating consumption channel bottleneck in wormhole routed k-ary n-cube systems

机译:缓解虫洞路由kary n-cube系统中的消费渠道瓶颈

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This paper identifies performance degradation in wormhole routed k-ary n-cube networks due to limited number of router-to-processor consumption channels at each node. Many recent research in wormhole routing have advocated the advantages of adaptive routing and virtual channel flow control schemes to deliver better network performance. This paper indicates that the advantages associated with these schemes cannot be realized with limited consumption capacity. To alleviate such performance bottlenecks, a new network interface design using multiple consumption channels is proposed. To match virtual multiplexing on network channels, we also propose each consumption channel to support multiple virtual consumption channels. The impact of message arrival rate at a node on the required number of consumption channels is studied analytically. It is shown that wormhole networks with higher routing adaptivity, dimensionality, degree of hot-spot traffic, and number of virtual lanes have to take advantage of multiple consumption channels to deliver better performance. The interplay between system topology, routing algorithm, number of virtual lanes, messaging overheads, and communication traffic is studied through simulation to derive the effective number of consumption channels required in a system. Using the ongoing technological trend, it is shown that wormhole-routed systems can use up to two-four consumption channels per node to deliver better system performance.
机译:本文指出由于每个节点上路由器到处理器的使用通道数量有限,蠕虫路由的k元n立方网络的性能下降。虫孔路由的许多最新研究都提倡自适应路由和虚拟通道流控制方案的优势,以提供更好的网络性能。本文指出,只有有限的消费能力才能实现与这些方案相关的优势。为了减轻这种性能瓶颈,提出了一种使用多个消耗通道的新网络接口设计。为了匹配网络通道上的虚拟多路复用,我们还建议每个使用通道支持多个虚拟使用通道。通过分析研究了节点上消息到达速率对所需消耗通道数的影响。结果表明,具有更高的路由适应性,维度,热点流量程度和虚拟通道数量的蠕虫网络必须利用多个消费渠道来提供更好的性能。通过仿真研究了系统拓扑,路由算法,虚拟通道数量,消息传递开销和通信流量之间的相互影响,以得出系统所需的有效消耗通道数。利用不断发展的技术趋势,可以证明,虫洞路由系统每个节点最多可以使用2-4个消耗通道来提供更好的系统性能。

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