A New Methodology for Reduced Cost of Resilience
Resilient design techniques are used to ensure correct operation under dynamic variations; and improve design performance (e.g., through timing speculation). However, significant overheads (e.g., 17% and 15% energy penalties due to throughput degradation and additional circuits) are incurred by existing resilient design techniques. For instance, resilient designs require additional circuits to detect and correct timing errors. Further, when there is an error, the additional cycles needed to restore a previous correct state degrade throughput, which diminishes the performance benefit of using resilient designs. In this paper, the authors propose a methodology for resilient design implementation to minimize the costs of resilience in terms of power, area and throughput degradation.