efficient 2D router architecture to extend 3D NoC-based multi-core architecture performance

Opoku Agyeman, M. and Zong, W. (2016) An efficient 2D router architecture for extending the performance of inhomogeneous 3D NoC-based multi-core architectures. In: SBAC-PAD Workshop on Applications for Multi-Core Architectures. USA: IEEE . 

Abstract
To meet the performance and scalability demands of the fast-paced technological growth towards exascale and Big-Data processing with the performance bottleneck of conventional metal based interconnects, alternative interconnect fabrics such as inhomogeneous three dimensional integrated Network-on-Chip (3D NoC) has emanated as a cost-effective solution for emerging multi-core design. However, these interconnects trade-off optimized performance for cost by restricting the number of area and power hungry 3D routers. Consequently, in this paper, we propose a low-latency adaptive router with a low-complexity single-cycle bypassing mechanism to alleviate the performance degradation due to the slow 2D routers in inhomogeneous 3D NoCs. By combining the low-complexity bypassing technique with adaptive routing, the proposed router is able to balance the traffic in the network to reduce the average packet latency under various traffic loads. Simulation shows that, the proposed router can reduce the average packet delay by an average of 45% in 3D NoCs.

To read more go http://nectar.northampton.ac.uk/8918/ or http://www.cos.ufrj.br/wamca/program.php

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The Impact of Obstacle on the Performance of Vehicular Ad hoc Network

A recent dissertation by an MSc Computing (Computing Network Engineering) looked at Vehicular Ad Hoc Network simulation for reducing traffic congestion and how obstacles effect the communication performance in the network.

The Impact of Obstacle on the Performance of Vehicular Ad hoc Network 

 Nuraddeen Ali Goni

Abstract 

Recently, Vehicular Ad hoc network (VANeT) has gain popularity due to the increase in vehicle safety and reducing traffic jam in urban and highway environment. Wireless Access for Vehicular Environment (WAVE) which is part of Dedicated Short Range Communication (DSRC) protocol was developed to adapt to VANeT requirements to support vehicle communication and Intelligent Transport System (ITS). The dissertation focuses on simulating how obstacles affect the performance of VANeT communication. Communication takes place using Vehicle-to-vehicle (V2V) and Vehicle-toInfrastructure (V2I) architecture with emphasis on Line of Sight (LOS) and Non-line of Sight (NLOS) transmission by the measuring total number of successful and unsuccessful packets decoded. The simulation was implemented using open source Veins framework which runs on OMNeT++ engine, coupled with SUMO which provides a realistic microsimulation for vehicles. The research is limited to Northampton town centre, Avenue and Park Campus surroundings. The environments were implemented with low, medium and high vehicle density with message broadcast throughout the simulation run time. Results generated were evaluated and analysed. Final results suggest that LOS and NLOS transmission play a role on different circumstances with regard to VANeT architecture and application. Finally, this project is the continuation of interim report written earlier.

Supervised by Dr Ali Al-Sherbaz


If you'd like to find out more about Computing at the University of Northampton go to: www.computing.northampton.ac.uk. All views and opinions are the author's and do not necessarily reflected those of any organisation they are associated with