Francisco J. Quiles

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This paper presents the architecture of a router designed to efficiently support traffic generated by multimedia applications. The router is targeted for use in clusters and LANs rather than in WANs, the latter being served by communication substrates such as ATM. The distinguishing features of the proposed router architecture are the use of small(More)
Distributed Video Coding (DVC) is an increasingly popular approach among the researchers in video coding during past few years due to its attractive and promising features. In DVC, the majority of the computational complexity has been shifted from encoder to the decoder in comparison to its conventional counterparts, including MPEG and H.26x enabling a(More)
Designers of large parallel computers and clusters are becoming increasingly concerned with the cost and power consumption of the interconnection network. A simple way to reduce them consists of reducing the number of network components and increasing their utilization. However, doing so without a suitable congestion management mechanism may lead to(More)
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As the number of components in cluster-based systems increases, costand power consumption also increase. One way to reduce both problems is usingsmaller networks with adequate congestion management mechanisms. Recentsuccessful proposals (RECN) eliminate the negative effects of congestion,the Head-of-Line (HOL) blocking, leaving congestion harmless. RECN(More)
Virtual channels (VCs) are a popular solution for the provision of quality of service (QoS). Current interconnect standards propose 16 or even more VCs for this purpose. However, most implementations do not offer so many VCs because it is too expensive in terms of silicon area. Therefore, a reduction of the number of VCs necessary to support QoS can be very(More)
Interconnection networks are key components in high-performance computing (HPC) systems, their performance having a strong influence on the overall system one. However, at high load, congestion and its negative effects (e.g., Head-of-line blocking) threaten the performance of the network, and so the one of the entire system. Congestion control (CC) is(More)
As VLSI technology advances, the interconnection network represents a larger percentage of the total system cost and power consumption. In fact, a current trend in network design is to reduce the number of components. However, this leads to systems working closer to saturation point, and therefore an efficient congestion management technique is required. In(More)