Optical networks-on-chips (ONoCs) is an effective and extensible on-chip communication technology, which has the characteristics of high bandwidth, low consumption, and low delay. In the design process of ONoCs, power loss is an important factor for limiting the scalability of ONoCs. Additionally, the optical signal-to-noise ratio (OSNR) is an index to measure the quality of ONoCs. Nowadays, the routing algorithm commonly used in ONoCs is the dimension-order routing algorithm, but the routing paths selected by the algorithm have high power loss and crosstalk noise. In this paper, we propose a 5×5 all-pass optical router model for two-dimensional (2-D) mesh-based ONoCs. Based on the general optical router model and the calculation models of power loss and crosstalk noise, a novel algorithm is proposed in ordder to select the routing paths with the minimum power loss. At the same time, it can ensure that the routing paths have the approximately optimal OSNR. Finally, we employ the Cygnus optical router to verify the proposed routing algorithm. The results show that the algorithm can effectively reduce the power loss and improve the OSNR in the case of network sizes of 5×5 and 6×6. With the increase of the optical network scale, the algorithm can perform better in reducing the power loss and raising the OSNR.

https://www.mdpi.com/2072-666X/11/11/996/pdf

A Novel Algorithm for Routing Paths Selection in Mesh-Based Optical Networks-on-Chips.

Network on chip has been discussed since it is smart structure and high performance. If using a high completion of on-chip communication method is called the Destination Tag. The destination Tag technique has been recently applied to Noc. The aim of this paper is to describe the technique is called the particle swarm optimization algorithm, to find the optimal solution for shortest paths. We propose PSO, To implement and optimized the traffic regulation unit at various algorithms of multiprocessor Noc. We can enhance the performance and network utilization. To enhance the efficiency of routing algorithm PSO is optimized. A Multi-NOC design with particle swarm optimization algorithms for various subnets, and Integrated, to avoid overcrowding power gating and packet scheduling policy. Using PSO we focused low power, scalable architecture. By using this method, the performance improvement at varying network utilization is achieved. It preserves extra energy is develops at long duration in grid system. The proposed router coded in VHDL and the simulation results is experimental shown by using the tool Xilinx.

M. Thilagavathi

Papers

High Performance Energy Efficient Grid Based Routing Algorithm for Multi Network on Chip