NGS: Collaborative Research: Adaptive Performance and Power Management for Real-Time Systems

实时系统的自适应性能和电源管理本研究将使实时计算机系统能够监控并自动调整其电源使用情况，以适应指定的容错和性能要求、当前工作负载以及当前和预计的能源/功率限制。许多系统都是受功率限制的，并不总是对其功耗有严格的限制。相反，它们有能源供应非常有限的时间段，应该谨慎使用，而在其他时间，可用的电力是足够的，系统被允许利用其所有资源来提供最大的性能。虽然在开发电路和设计技术以构建低功耗设备方面已经进行了大量的研究，但关于动态调整功耗以适应工作负载和能量/功率可用性水平变化的技术的报道很少。需要一种集成的方法，从硬件操作（使用电压时钟缩放或睡眠模式）到应用程序级别。我们的初步调查表明，这种综合方法，利用这些不同层之间的协同作用，比逐步采用的单层方法要有效得多。

EIA-0102696Israe KorenUniversity of MassachusettsAdaptive Performance and Power Management for Real-Time SystemsThis research will enable real-time computer systems to monitor and automatically adapt their power usage to specified fault-tolerance and performance requirements, prevailing workload, and current and projected energy/power constraints.Many systems, which are power-constrained, do not always have a strict limit on their power consumption. Instead, they have periods of time during which energy supply is very limited, and should be used sparingly, while at other times, the power available is adequate and the system is allowed to exploit all its resources to deliver maximum performability. While there has been a great deal of research in developing circuits and design techniques to build low-power devices, there is very little reported on techniques to adjust power consumption on-the-fly to adapt to changing levels of workload and energy/power availability. There is the need for an integrated approach, ranging from the hardware operation (using voltage-clock scaling or a sleep mode) to the application level. Our preliminary investigations have shown that such an integrated approach, exploiting the synergy between these various layers, is far more effective than single-layer approaches adopted incrementally.