Optimization for traffic-based virtual channel activation low-power NoC

Abstract

Low leakage power with maintained high throughput NoC is achieved. Traffic-based Virtual channel Activation (TVA) algorithm is presented to determine traffic load status at the NoC switch ports. Consequently adaptation signals are sent to activate or deactivate switch port VC groups. The algorithm is optimized to minimize power dissipation for a target throughput. TVA algorithm optimally utilizes VCs by deactivating idle VCs groups to guarantee high leakage power saving without affecting the NoC throughput. Network average leakage power has been reduced for different topologies (such as 2D-Mesh and 2D-Torus).