Simultaneous Application of Power Management Scheduling and Operation Delay Selection for Peak Power Minimization

Abstract

Operation scheduling is the most important task in highlevel synthesis. Most conventional operation scheduling algorithms paid attention to the minimization of control steps or the minimization of resources. However, as the design complexity continues to increase, huge peak power may lead to logic errors due to voltage drops or reliability problems due to electromigration. As the popularization of portable and wireless communication, low power design is getting very important. An efficient power management method is to use control logic to shut down unused operations. On the other hand, longer operation delay, which implies smaller peak power, can be selected if no design constraint (timing and resource). In this paper, we present an ILP (integer linear programming) formulation to model the problem of simultaneous application of power management scheduling and operation delay selection for peak power minimization. Benchmark data consistently show that our approach minimizes the peak power within an acceptable run time.