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United States Department of Defense (DoD) Services (e.g., Army, Navy, Air Force) deploy different network devices in their enclave networks. These devices provide edge network functions such as information assurance, plain text routing, admission and congestion control, and TCP performance enhancements. Due to the different enclave network implementations in different Service networks, interoperability...
The performance of most digital systems today is limited by the interconnect latency between logic and memory, rather than by the performance of logic or memory itself. Three-dimensional (3-D) integration using through-silicon-vias (TSVs) may provide a solution to overcome the scaling limitations by stacking multiple memory dies on top of a many-core die. In this paper, we propose a Mesh-of-Trees...
The overhead portion especially for a small packet is one of the most significant parameters that can lower the efficiency of the link utilization. Therefore, many traditional hop-by-hop header compression techniques were introduced to reduce the amount of packet header before transmission. However, those techniques still cannot overcome the time performance issue as compression mechanism requires...
A new 6D mesh/torus (Tofu) interconnect is implemented in the K Computer for achieving a performance of more than 10 petaflops. As expected, among its many interesting properties, such interconnect has large variations of latencies for communications within a node-group (intra-node-group) or between them (inter-node-group). Inspired by their works while recognizing the superior features of the recently...
In mobile Delay Tolerant Networks (DTNs), messages are routed in a mobility-assisted manner. Therefore, the willingness of nodes to relay messages for other nodes plays a significant role in the routing process. Moreover, since the resources in mobile devices are generally limited, carriers of mobile devices may be unwilling to relay messages for other nodes in order to conserve their scarce resources...
Evolutionary algorithms (EAs) are mainly considered for modelling and solving practical complex and NP-hard problems in large-scale search spaces. The aim of this paper is to apply some well-known intelligent optimization algorithms such as Genetic Algorithm (GA), Particle Swarm Optimization (PSO) and Artificial Bee Colony (ABC) algorithms for solving routing and wavelength assignment (RWA) problem...
In multicore systems, low transmission delay and high throughput are essential to fully harness the computational power offered by tens or hundreds of cores. In this paper we present a new NoC architecture (M8NoC) by devising changes to the topology and routing of the simple mesh network. The changes allow overcoming some limitations of the mesh network by decreasing the diameter, decreasing the average...
Transistor geometries are well into the nanometer regime, keeping with Moore's Law. With this scaling in geometry, problems not significant in the larger geometries have come to the fore. These problems, collectively termed variability, stem from second-order effects due to the small geometries themselves and engineering limitations in creating the small geometries. The engineering obstacles have...
Being a critical highway between FPGA core IPs, the routing fabric components play an integral part in overall core performance. Optimizing the components in the routing fabric region is not a trivial task when considering the multitude of variable physical parameters involved especially the profound association with software programming and constantly changing process parameters. Common optimization...
Multipath routing has been proved effective in mobile ad-hoc networks (MANETs) for coping with link failures resulting from node mobility. In wireless mesh networks (WMNs) where routers are generally static, the traffic carried by the backup paths may adversely impact other flows and the multicast group itself, because these paths increase the number of transmissions and thus the level of interference...
Network-on-Chip (NoC) Router has an important impact on the network communication performance. High performance router will help to build a high-throughput, power-efficient and low-latency NoC. However, the existing baseline router of Triplet-based Hierarchical Interconnection Network (THIN) can not fully exert the potential performance of THIN because it does not consider the characteristic of THIN...
UnderWater Acoustic Sensor Networks (UW-ASNs) are experiencing a rapid growth, due to their high relevance to commercial and military applications such as oceanographic data collection, pollution monitoring, offshore exploration, disaster prevention, and tactical surveillance. However, the design of efficient communication protocols for underwater sensor networks is still an open research problem...
Partial reconfiguration is possible to deliver virtually unlimited hardware resources since it enables dynamic allocation and de-allocation of tasks onto a reconfigurable architecture, while the rest tasks continue to operate. However, in order to benefit from this flexibility, partial reconfiguration has to be appropriately applied. Among others, the placement of partial configuration data is a critical...
In this paper, we simulate and analyze the performance of the network formation process with the RPL (IPv6 Routing Protocol for Low Power and Lossy Networks), which is a routing protocol specifically designed for Low power and Lossy Networks (LLN) compliant with 6LoWPAN (IPv6 Low power Wireless Personal Area Networks). One motivation behind this work is that RPL is the first prospective candidate...
High-radix switches are an attractive option to improve network performance and to reduce network cost, especially in large switch-based interconnection networks. However, there are some problems related to the integration scale to design such single-chip switches. In this paper we describe an interesting alternative for building high-radix switches which basically consists in combining several current...
With the ever increasing demand of multicasting on the Internet, the interest in deploying multicast for distribution of these contents have increased. To evaluate the performance of multicast protocols many efforts have been put into defining multicast metrics. This paper defines the performance metric for evaluation of multicast protocols DVMRP, MOSPF, PIM-SM, PIM-DM and CBT and also outlines the...
In recent years, social interest in viewing consumer-generated media (CGM) contents has been rapidly growing, so their network traffic has been increasing considerably. To cope with this new increase in network traffic, we propose a tag caching router (TCR) architecture that supports folksonomies-based search and content caching for CGM content. Folksonomies are key words or metadata attached to the...
Opportunistic networks are challenged wireless networks where most of the time contacts are intermittent and link performance is typically highly variable. In this kind of environment, an end-to-end path between the source and the destination may only exist for a brief period and may change quickly. Long propagation and variable queuing delays might be introduced and conventional routing protocols...
This paper deals with an energy saving routing solution, called Energy Saving IP Routing (ESIR), to be applied in an IP network. ESIR operation is integrated with Open Shorthest Path First (OSPF) protocol and allows the selection of the links to be switched off so that the negative effects of the IP topology reconfiguration procedures are avoided. The basic mechanisms which ESIR is based on are the...
This paper presented Chartis, a path inference system for data center networks. Chartis takes as input router configurations and topology data to emulate hop-by-hop path calculation and overcomes the limitations of existing path tracing tools such as traceroute. We verified that the inferred paths by Chartis match the set of devices actual packets traverse. We also demonstrated that how Chartis was...
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