Abstract: Embodiments described herein may include apparatus, systems, techniques, and/or processes that are directed to adaptively determining an optimum time frame or demotion threshold for when to power down a voltage rail of an idle device. The demotion threshold is typically the point where the energy cost for maintaining power to the device is approximately the same as or exceeds the energy cost of removing power to the device. The demotion threshold may vary with system conditions and may be based on device leakage current, wake voltage, capacitance, voltage regulator power consumption, current workload and the like. A power control unit in the computing system may manage the voltage of the device and determine the optimum demotion threshold. The power control unit may rely on physical inputs such as fuses on a motherboard, system inputs supplied by a manufacturer, current condition inputs and may be implemented in the device's or the system's software or firmware.

Abstract: A system can include a nonlinear circuit and a voltage decoder. The nonlinear circuit can perform an operation on an input voltage. The operation can be changed. A voltage decoder can be communicatively coupled to the nonlinear circuit for receiving an output voltage from the nonlinear circuit that results from the operation performed on the input voltage. The voltage decoder can compare the output voltage to a threshold voltage and determine a result of the operation.

Abstract: An apparatus is provided, where the apparatus includes a plurality of processing cores to execute a plurality of processes, a register to store an indicator that is to indicate a preference for either performance or energy efficiency, a first circuitry to determine an effective utilization of a first processing core, based on the indicator, and a second circuitry to select at least one of an operating voltage or an operating frequency of the first processing core, based at least in part on the effective utilization of the first processing core.

Abstract: A system can include a nonlinear circuit and a voltage decoder. The nonlinear circuit can perform an operation on an input voltage. The operation can be changed. A voltage decoder can be communicatively coupled to the nonlinear circuit for receiving an output voltage from the nonlinear circuit that results from the operation performed on the input voltage. The voltage decoder can compare the output voltage to a threshold voltage and determine a result of the operation.

Abstract: An apparatus is provided, where the apparatus includes a plurality of processing cores to execute a plurality of processes, a register to store an indicator that is to indicate a preference for either performance or energy efficiency, a first circuitry to determine an effective utilization of a first processing core, based on the indicator, and a second circuitry to select at least one of an operating voltage or an operating frequency of the first processing core, based at least in part on the effective utilization of the first processing core.