PROCESSOR UNIT EFFICIENCY CONTROL
    2.
    发明申请

    公开(公告)号:US20170357302A1

    公开(公告)日:2017-12-14

    申请号:US15275213

    申请日:2016-09-23

    Applicant: Apple Inc.

    CPC classification number: G06F1/3287 G06F1/3206 G06F1/324 Y02D10/171

    Abstract: Embodiments provide for a computer implemented method comprising sampling one or more power and performance metrics of a processor; determining an energy cost per instruction based on the one or more power and performance metrics; determining an efficiency metric based on the energy cost per instruction; computing an efficiency control error based on a difference between a current efficiency metric and a target efficiency metric; setting an efficiency control effort based on the efficiency control error; determining a performance control effort, the performance control effort determined by a performance controller for the processor; and adjusting the performance control effort based on the efficiency control effort, wherein adjusting the performance control effort reduces power consumption of the processor.

    Processor unit efficiency control

    公开(公告)号:US10437313B2

    公开(公告)日:2019-10-08

    申请号:US15275213

    申请日:2016-09-23

    Applicant: Apple Inc.

    Abstract: Embodiments provide for a computer implemented method comprising sampling one or more power and performance metrics of a processor; determining an energy cost per instruction based on the one or more power and performance metrics; determining an efficiency metric based on the energy cost per instruction; computing an efficiency control error based on a difference between a current efficiency metric and a target efficiency metric; setting an efficiency control effort based on the efficiency control error; determining a performance control effort, the performance control effort determined by a performance controller for the processor; and adjusting the performance control effort based on the efficiency control effort, wherein adjusting the performance control effort reduces power consumption of the processor.

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