Power-Driven Design Partitioning

Abstract

In order to enable efficient integration of FPGAs into cost effective and reliable high-performance systems as well potentially into low power mobile systems, their power efficiency needs to be improved. In this paper, we propose a power management scheme for FPGAs centered on a power-driven partitioning technique. Our power-driven partitioner creates clusters within a design such that within individual clusters, power consumption can be improved via voltage scaling. We tested the effectiveness of our approach on a set of LUT-level benchmark netlists. Further we did constrained placement of the clusters into predefined V$_{\mbox{\tiny dd}}^{\mbox{\tiny \,\,\,\,\,\,high}}$ and V$_{\mbox{\tiny dd}}^{\mbox{\tiny \,\,\,\,\,\,low}}$ regions for a single FPGA. Average savings in power consumption with our approach is 48% whereas penalty in channel width and wire length due to constrained placement is 23% and 26% respectively.