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Network on chip is a new trend in multi-core applications. Typically multiprocessor requires several Intellectual property (IP) cores based on the application needs. When the number of processing elements (PEs) increases in the multi-core device then a couple of problems encountered like traffic congestion, deadlock, interconnection problems, area, power latency and so on. There are several types...
Network on chip is a new trend in multicore applications. Typically multiprocessor requires several Intellectual property (IP) cores based on the application needs. When the number of processing elements (PEs) increases in the multi-core device then a couple of problems encountered like traffic congestion, deadlock, interconnection problems, area, power latency and so on. There are several types of...
ZigBee network can be configured as three main topologies such as star, tree or mesh topology. The main objective is to have low power consumption and high channel utilization, impact of MAC parameters such as beacon order (BO) and super frame order (SO) for star, tree and mesh topology in beacon disable mode and beacon enable mode by varying CBR traffic loads. The reactive protocol such as AODV (Adhoc...
Numerous TOP500 supercomputers are based on a torus interconnection network. The torus topology is effectively one of the most popular interconnection networks for massively parallel systems due to its interesting topological properties such as symmetry and simplicity. For instance, the world-famous supercomputers Fujitsu K, IBM Blue Gene/L, IBM Blue Gene/P and Cray XT3 are all torus-based. In this...
End-to-end network latency has become an important issue for parallel application on large-scale high performance computing (HPC) systems. It has been reported that randomly-connected inter-switch networks can lower the end-to-end network latency. The trade-off is a large amount of routing information. For irregular networks, minimal routing is achieved by using routing tables for all destinations...
Designing low-latency network topologies of switches is a key objective for next-generation parallel computing platforms. Low latency is preconditioned on low hop counts, but existing network topologies have hop counts much larger than theoretical lower bounds. The degree diameter problem (DDP) has been studied for decades and consists in generating the largest possible graph given degree and diameter...
In a peer to peer self-stabilizing message passing system, every single node in the network operates independently with independent resources. In order to self-stabilize to a correct state, messages are passed as a distributed system collectively, messages are passed through out the network among each of the member of the network to inform other nodes about their own states which is later to be used...
Various parallel applications require a low-latency interconnection network to achieve high performance and high scalability. Recently proposed random network topologies achieve low latency, but they require each switch to have a large number of routing table entries, e.g., larger than N for an N-node network, for implementing a minimal routing. In this study, we propose the use of a random network...
A large number of battery-driven sensor nodes are deployed to operate a wireless sensor network, and thus power saving of nodes is a problem of vital significance. Many routing methods have been proposed to reduce energy consumption. In light of this fact, if it can be known how much energy consumption will be required for sensor nodes to operate a network before deploying the nodes, it will help...
The pattern of mobile nodes movement and node removals or additions cause frequent and unpredictable changes in the topology of mobile ad hoc networks. Network performance can thus vary significantly under different mobility models, as well as from the variation in parameters of a given mobility model, such as node movement speed and number of nodes in the network. Hence, the efficiency of a network...
Graph-based topology control adapts wireless topologies to achieve certain target graph structures. Wireless sensor networks seem well-suited for the expectations (in particular those on provided energy savings) raised by topology control. Nevertheless, topology control has never made the breakthrough in real-world deployments. This work explores the reasons for this, identifying five practical obstacles...
Live Virtual machine (VM) migration is a promising solution for data center (DC) administrators to achieve a wide range of objectives - from load balancing to disaster evacuation. Ideally, live VM migration is seamless and the challenge is to minimize the downtime during which the VM is not responding to requests or providing the service. The duration of the downtime is mainly influenced by the migration...
ETRI distributed cloud platform provides customers with optimal computing and storage resources over remotely distributed micro datacenters connected over multi-domain transport networks. It requires dynamic SDN control to utilize transport network resource efficiently. This paper introduces implementation of transport network orchestration to control multi-domain transport networks for the distributed...
Reconfiguration of high performance lossless interconnection networks is a cumbersome and time-consuming task. For that reason reconfiguration in large networks are typically limited to situations where it is absolutely necessary, for instance when severe faults occur. On the contrary, due to the shared and dynamic nature of modern cloud infrastructures, performance-driven reconfigurations are necessary...
Three-dimensional (3D) integration is considered as a solution to overcome capacity, bandwidth, and performance limitations of memories. However, due to thermal challenges and cost issues, industry embraced 2.5D implementation for integrating die-stacked memories with large-scale designs, which is enabled by silicon interposer technology that integrates processors and multiple modules of 3D-stacked...
A network topology algorithm based on SNMP was put forward and implemented. This algorithm could confirm the connection between ports and improve the efficiency of discovery through combining the topology discovery of the network layer and the link layer. It could solve the problem of subnet information redundancy and incomplete information of address forwarding table during the discovery. The experimental...
Complex robotic systems like the DLR Hand Arm System integrates a huge amount of sensors and actuators. Hence system design and especially communication infrastructure design has to be flexible in a heterogeneous network of different bus systems. As basis, a modular electronic concept as well as a well-structured communication concept is necessary [1]-[3]. SpaceWire suites well to these requirements...
Named Data Networking (NDN) is a newly proposed content-centric network architecture that naturally supports efficient content distribution by routing data names instead of conventional IP prefixes. Taking advantage of the unique feature-adaptive forwarding in NDN and the centralized management and control in Software Defined Networking (SDN), we design and develop SDAR, a Software Defined Intra-Domain...
Satellite networks can provide worldwide-coverage wireless datagram services. With the advantage of low orbit altitude and short round-trip delay, the Low Earth Orbit (LEO) satellite is becoming an essential part of the next generation of the Internet. In this paper, we propose a shortest path routing algorithm for Next-generation LEO System (NeLS), a delta-type LEO satellite constellation. Based...
The emergence of Network-on-Chip (NoC) as a communication paradigm for Multi-Processor System-on-Chips (MPSoCs) significantly exacerbates the need to provide a methodology that optimizes the energy consumption of the overall system. This is especially important when factoring in current Network-on-Chip advances which have multiple communication media such as on-chip wireless or nano-photonics links,...
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