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首页> 外文会议>International Euro-Par Parallel Processing Conference; 20050830-0902; Lisbon(PT) >On the Correct Sizing on Meshes Through an Effective Congestion Management Strategy
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On the Correct Sizing on Meshes Through an Effective Congestion Management Strategy

机译：通过有效的拥塞管理策略正确调整网格大小

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摘要

Interconnection networks used in clusters of PCs are often dimensioned with certain restrictions. One restriction could be the reduction of power consumption and overall cost. In this sense, the network size must be reduced. Another restriction is to guarantee that the system offers a minimum bandwidth. In this case, the network size must be increased. In both cases, the head-of-line (HOL) blocking effect (related to network congestion) may appear, degrading network performance and thus, preventing the correct sizing of the network. Therefore, some mechanisms should be implemented for reducing or eliminating this problem, in order to dimension the network as desired while keeping network performance at maximum. In this paper we analyze the impact on network performance when using different mechanisms for handling HOL blocking when interconnection networks with mesh topology are dimensioned in several ways. We show that the previously proposed RECN congestion control mechanism is key in order to efficiently eliminate HOL blocking in meshes and, therefore, it allows the correct network sizing.
机译：PC群集中使用的互连网络通常具有一定的限制。一种限制可能是降低功耗和总体成本。从这个意义上讲，必须减小网络大小。另一个限制是保证系统提供最小带宽。在这种情况下，必须增加网络大小。在这两种情况下，都可能出现行头（HOL）阻塞效应（与网络拥塞有关），从而降低了网络性能，并因此阻止了正确的网络规模。因此，应该实施一些机制来减少或消除该问题，以便在保持最大网络性能的同时，按需调整网络规模。在本文中，当以多种方式确定互连网络的尺寸时，我们使用不同的机制来处理HOL阻塞时，对网络性能的影响进行了分析。我们表明，先前提出的RECN拥塞控制机制是有效消除网格中HOL阻塞的关键，因此，它可以实现正确的网络大小调整。

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