Dynamic thermal management
Seda Ogrenci-Memik · Institution of Engineering and Technology eBooks · 2015
In this chapter, we will first describe prominent examples of the global thermal management infrastructures, including sensor interfaces and feedback control pathways. Next, methods for DTM involving the interaction between the sensing, control, and intervention will be discussed. To a first degree, clock frequency and supply voltage are managed to control the hardware's thermal response. This management occurs at two major levels of abstraction. A majority of first response mechanisms are carried out directly by the hardware. Temperature and power measurements are also reported to the system software through various interface technologies. Combining this information reported by the hardware with systemlevel knowledge of parameters such as processor utilization, the system software can also perform additional management, usually at a larger timescale.