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|關鍵字:||虛擬通道;多階層交換網路;爆發型通訊;效益分析||出版社:||國立中興大學工學院;Airiti Press Inc.||Project:||興大工程學刊, Volume 15, Issue 1, Page(s) 25-35.||摘要:||
In the past, much research effort has been devoted to the performance analysis of buffered MIN (multistage interconnection network). Most of these studies, however, assume that a burst of cells is indivisible when transferred across stages of a MIN switch, and that the traffic consists of discrete packets of uniform length. The effect of employing virtual channel flow control to process burst of varying lengths through the MIN remains basically unknown at present. In this paper, we consider the presence of bursty traffic in the MIN. With traffic remodeling, we derive a closed form for switch delay and the analytical result is compared to the simulation result. The comparison shows that this analysis givers a good approximation. According to the assumption we have made in the analytical model, this result implies that the performance of a MIN switch with virtual channel flow control mainly depends on the average burst length of traffic source. It is not sensitive to the shapes of their distribution. We also construct a simulator for the proposed MIN. Extensive simulations have been conducted with an emphasis on the relationship among packet delay and burst length, virtual channel number, virtual channel length, network size and switch element size. We find that the length of virtual channel plays an important role in the performance of a MIN. by adjusting the virtual channel length according to the traffic burst degree, we can further improve the network performance up to 10% of the physical link capacity. Computer simulation shows that using the CM-LMS with MUSIC has fast convergent speed and more stable than suing the RLS algorithm.
|Appears in Collections:||第15卷 第1期|
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