Mobility overlap-removal based leakage power aware scheduling in high-level synthesis

In this paper, we address the problem of scheduling operations into control steps with dual threshold voltage (dual-Vth) technique under timing and resource constraints. Recently, some scheduling methods are proposed based on the mobility overlap removal, and it is a hard problem to remove the mobility overlap optimally. There might be no feasible solution with an improper mobility overlap removal. In this work, we implement the mobility overlap removal together with dual threshold voltage technique to minimize the total leakage power. A simulated-annealing based method is introduced to explore the optimal solution. For each mobility overlap removal, a probability-based method is proposed to schedule operations at appropriate control steps, and to assign them with proper threshold voltages. The experimental results show the effectiveness of the proposed method.