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High Performance Networking VII: IFIP TC6 Seventh by Rajesh R. Talpade, Mostafa H. Ammar (auth.), Ahmed Tantawy

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By Rajesh R. Talpade, Mostafa H. Ammar (auth.), Ahmed Tantawy (eds.)

It is usually complicated, and maybe inconvenient from time to time, utilizing universal phrases that may suggest whatever to each person yet various things to varied humans. "High functionality" is a type of phrases. excessive functionality could be considered as synonymous to excessive velocity or Low Latency or a few different features. The fascinating factor is that such ambiguity can occasionally be invaluable in an international the place concentration shifts really simply from one factor to a different as occasions and wishes evolve. many stuff have replaced because the first HPN convention held in Aachen, Germany in 1987. the point of interest then used to be frequently on Media entry keep watch over (MAC) protocols that permit clients to percentage the excessive bandwidth of optical fiber. FDDI (Fiber disbursed info Interface) used to be making its debut with its remarkable a hundred Mbps pace. ATM (Asynchronous move Mode) and SONET (the Synchronous Optical community) have been commencing to trap our mind's eye. What may possibly clients almost certainly do with such "high performance"? proportion it! After knowing that the true difficulties had progressively shifted clear of the community media to the outer edge of the community, concentration additionally started to shift. Adapter layout, protocol implementation, and conversation structures structure started to allure our curiosity. Networking -not Networks-became the recent issue.

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Additional resources for High Performance Networking VII: IFIP TC6 Seventh International Conference on High Performance Networks (HPN ‘97), 28th April – 2nd May 1997, White Plains, New York, USA

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2 Shift and Merge (CPSM) The second algorithm presented, called Center Placement by Shift and Merge (CPSM), also belongs to the group of greedy algorithms [3]. Unlike the CPSS algorithm, CPSM starts building clusters at the leaves and then moves subsequently towards the source. It concentrates on optimizing the cluster sizes (and thereby the mean squared error of the cluster size M SE). Less effort is spent in minimizing the maximal receiver delay mDR since CPSM does not explicitly try to reduce the number of centers on the longest path (in terms of delay), like CPSS does.

All values presented in the following sections are mean values of 100 evaluated trees . Indicated intervals are 95% confidence intervals [10]. 1 Evaluation Metrics In order to compare different algorithms, an exact quantification is needed. As the effects of the cluster size and the maximal receiver delay to a multicast connection are not known exactly, they will be treated s eparately. For the performance evaluation two metrics are used. he proposed algorithms will be evaluated using the above introduced quality metrics.

When starting such an experiment, we first define the perfonnance measures of interest (for instance throughput), the scalability parameters that we want to consider (for instance number of users) and finally we define the desired value of the perfonnance measure as function of the scalability parameter (assume this is curve Yo as shown in Figure 4). In the next step we determine, given the network model, the actual value of the perfonnance measure as function of the scalability parameter resulting in graph Y \.

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