24-28 August 2020
US/Pacific timezone

Remote offline of a CPU through Hardware Feedback Interface to increase system TDP

28 Aug 2020, 07:50
Microconference2/Virtual-Room (LPC 2020)


LPC 2020

Power Management and Thermal Control MC Power Management and Thermal Control MC


Srinivas Pandruvada


Intel Hardware provides guidance to the Operating System (OS) scheduler to perform optimal workload scheduling through a hardware feedback interface structure in memory. Via this interface Hardware can also provide recommendation to the OS to not schedule any software threads on a CPU, so essentially offline a CPU remotely. There are three methods to implement this, each has its own advantages and disadvantages. Discuss the best method to implement this feature.

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