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At the behavioral level, large power saving is possible by shutting down unused operations, which is commonly referred to as power management. However, on the other hand, operation scheduling has a significant impact on the potential for power saving via power management. In this paper, we present an integer linear programming (ILP) model for the simultaneous application of operation scheduling and power management in high level synthesis. Our objective is to maximize the power saving under both the timing constraints and the resource constraints. Compared with previous work, experimental data consistently show that our approach has significant improvement in the power saving.

Abstract:The three-dimension scheduling is defined as the simultaneous application of clock selection and operation scheduling. Previous three-dimension scheduling approach does not consider the interconnect delay. However, with the advent of nanometer era, the interconnect delay may take multiple clock cycles. In this paper, we use convex programming to formulate the three-dimension scheduling problem under multi-cycle interconnect communications. Benchmark data consistently show that our approach achieves the minimum latency within an acceptable run time.