Dynamic slack reclamation with procrastination scheduling in real-time embedded systems

Leakage energy consumption is an increasing concern in current and future CMOS technologygenerations. Procrastination scheduling, where task execution can be delayed to maximize the duration of idle intervals, has been proposed to minimize leakage energy drain. We address dynamic slack reclamation techniques under procrastination scheduling to minimize the static and dynamic energy consumption. In addition to dynamic task slowdown, we propose dynamic procrastination which seeks to extend idle intervals through slack reclamation. While using the entire slack for either slowdown or procrastination need not be the most energy efficient approach, we distribute the slack between slowdown and procrastination to exploit maximum energy savings. Our simulation experiments show that dynamic slowdown results on an average 10% energy gains over static slowdown. Dynamic procrastination extends the average sleep interval by 25% which reduces the idle energy consumption by 15%, while meeting all tim...

• Type: Conference
• Year: 2005
• Where: DAC
• Authors: Ravindra Jejurikar, Rajesh K. Gupta
• Keywords: DAC 2005, Design Automation, Dynamic Energy Consumption, Dynamic Procrastination, Dynamic Task Slowdown