ABSTRACT
In this chapter, we explore the LORAX framework, which uses loss-aware approximation of floating point data communicated over PNoC architectures for reduction in energy utilization and power consumption. This exploration showcases how multilevel signaling can assist with the proposed approximation framework. The results indicate that utilizing multilevel signaling as part of our framework can reduce laser power consumption by up to 39.7% over a baseline PNoC architecture. The framework also shows up to 31.4% lower laser power and up to 12.2% better energy efficiency compared to the best known prior work on approximating communication in PNoCs. These results highlight the potential of using approximation strategies in PNoC architectures to reduce their energy footprint in emerging manycore platforms.
