公开(公告)号：US11513576B2

公开(公告)日：2022-11-29

申请号：US16889232

申请日：2020-06-01

Applicant: Apple Inc.

Inventor： Achmed R. Zahir ,  Diwakar N. Tundlam ,  James S. Ismail ,  Keith Cox ,  Reza Arastoo ,  Douglas A. MacKay ,  John M. Ananny ,  Michael Eng

IPC: G06F1/28 ,  G06F1/3212 ,  H02J7/00 ,  G01R31/367 ,  G01R31/387

Abstract: Systems and methods are disclosed for allocating and distributing power management budgets for subsystems (e.g., power usage clients) of a computer system. A power budget allocation subsystem may include a plurality of feedback branches having different associated time constants. Power usage clients with slower power response times may be provided power budgets based on a feedback branch having an associated longer time constant, while power usage clients with faster power response times may be provided with power budgets based on a feedback branch having an associated shorter time constant. The power budgets may be determined in the feedback branches based on power budgeting policies weighting the power budget of each subsystem relative to total power mitigation.

公开(公告)号：US20220147132A1

公开(公告)日：2022-05-12

申请号：US17521567

申请日：2021-11-08

Applicant: Apple Inc.

Inventor： James S. Ismail ,  Bryan R. Hinch ,  Evan M. Hoke ,  Andrei Dorofeev ,  Shirin Dadashi ,  Mohsen Heidarinejad ,  Reza Araston

IPC: G06F1/3228 ,  G06F1/20 ,  G06F1/3215

Abstract: Embodiments are presented herein of, inter alia, systems, devices, and associated methods for allocating and distributing power management budgets for classes of tasks being executed by a computer system, based on thermal feedback loops. Specifically, multiple quality-of-service (QoS) tiers may be defined, and each QoS tier may be allocated power based on a different set of thermal feedback loops. QoS tiers including tasks that are invisible to the user may be mitigated more aggressively than QoS tiers including tasks that are visibly supporting user operations.

公开(公告)号：US20210318909A1

公开(公告)日：2021-10-14

申请号：US17208928

申请日：2021-03-22

Applicant: Apple Inc.

Inventor： Jeremy C. Andrus ,  John G. Dorsey ,  James M. Magee ,  Daniel A. Chimene ,  Cyril de la Cropte de Chanterac ,  Bryan R. Hinch ,  Aditya Venkataraman ,  Andrei Dorofeev ,  Nigel R. Gamble ,  Russell A. Blaine ,  Constantin Pistol ,  James S. Ismail

IPC: G06F9/50 ,  G06F9/48 ,  G06F1/3234 ,  G06F1/329 ,  G06F1/3296 ,  G06F9/38 ,  G06F9/26 ,  G06F9/54 ,  G06F1/20 ,  G06F1/324

Abstract: Systems and methods are disclosed for scheduling threads on a processor that has at least two different core types, such as an asymmetric multiprocessing system. Each core type can run at a plurality of selectable voltage and frequency scaling (DVFS) states. Threads from a plurality of processes can be grouped into thread groups. Execution metrics are accumulated for threads of a thread group and fed into a plurality of tunable controllers for the thread group. A closed loop performance control (CLPC) system determines a control effort for the thread group and maps the control effort to a recommended core type and DVFS state. A closed loop thermal and power management system can limit the control effort determined by the CLPC for a thread group, and limit the power, core type, and DVFS states for the system. Deferred interrupts can be used to increase performance.

公开(公告)号：US10067483B1

公开(公告)日：2018-09-04

申请号：US14471164

申请日：2014-08-28

Applicant: Apple Inc.

Inventor： Ching E. Ho ,  Antonietta Oliva ,  James S. Ismail ,  John G. Dorsey ,  Keith Cox ,  Norman J. Rohrer

IPC: G06Q10/06 ,  G06F17/18 ,  G05B19/4065 ,  G05B13/02 ,  G05B23/02

Abstract: In an embodiment, a lifetime controller is configured to monitor operating conditions for a device, and to control operating conditions based on the previous conditions to improve the reliability characteristics of the device while permitting strenuous use as available. For example, the lifetime controller may permit strenuous use when the device is first powered on. Once a specified amount of strenuous use has occurred, the controller may cause the operating conditions to be reduced to reduce the wear on the device, and thus help to extend the lifetime of the device. Similarly, if a device is used in less strenuous conditions, the controller may accumulate credit which may be expended by permitting the device to operate in more strenuous conditions for a period of time.

公开(公告)号：US20170330528A1

公开(公告)日：2017-11-16

申请号：US15471553

申请日：2017-03-28

Applicant: Apple Inc.

Inventor： John G. Dorsey ,  James S. Ismail ,  Keith Cox ,  Gaurav Kapoor

IPC: G09G5/00 ,  G06T1/60 ,  G06F1/26 ,  G06F1/32 ,  G06T1/20 ,  G06T13/80

CPC classification number: G09G5/003 ,  G06F1/20 ,  G06F1/26 ,  G06F1/324 ,  G06F1/3296 ,  G06T1/20 ,  G06T1/60 ,  G06T13/80 ,  G06T2200/28 ,  G09G5/18 ,  G09G2354/00 ,  G09G2360/08 ,  G09G2360/127 ,  Y02D10/126 ,  Y02D10/172

Abstract: The invention provides a technique for targeted scaling of the voltage and/or frequency of a processor included in a computing device. One embodiment involves scaling the voltage/frequency of the processor based on the number of frames per second being input to a frame buffer in order to reduce or eliminate choppiness in animations shown on a display of the computing device. Another embodiment of the invention involves scaling the voltage/frequency of the processor based on a utilization rate of the GPU in order to reduce or eliminate any bottleneck caused by slow issuance of instructions from the CPU to the GPU. Yet another embodiment of the invention involves scaling the voltage/frequency of the CPU based on specific types of instructions being executed by the CPU. Further embodiments include scaling the voltage and/or frequency of a CPU when the CPU executes workloads that have characteristics of traditional desktop/laptop computer applications.

公开(公告)号：US09494994B1

公开(公告)日：2016-11-15

申请号：US14549656

申请日：2014-11-21

Applicant: Apple Inc.

Inventor： Patrick Y. Law ,  Robert A. Drebin ,  Keith Cox ,  James S. Ismail

IPC: G06F1/00 ,  G06F1/32 ,  G06F1/20

CPC classification number: G06F1/3206 ,  G06F1/206 ,  G06F1/3203 ,  G06F1/324 ,  G06F1/3287 ,  G06F1/3296 ,  Y02D10/126 ,  Y02D10/16 ,  Y02D10/171 ,  Y02D10/172

Abstract: In one embodiment, a system includes power management control that controls a duty cycle of a processor to manage power. The duty cycle may be the amount of time that the processor is powered on as a percentage of the total time. By frequently powering up and powering down the processor during a period of time, the power consumption of the processor may be controlled while providing the perception that the processor is continuously available. For example, the processor may be a graphics processing unit (GPU), and the period of time over which the duty cycle is managed may be a frame to be displayed on the display screen viewed by a user of the system.

Abstract translation: 在一个实施例中，系统包括控制处理器管理电力的占空比的电源管理控制。 占空比可以是处理器上电的时间量占总时间的百分比。 通过在一段时间内频繁地加电和断电处理器，可以控制处理器的功耗，同时提供处理器持续可用的感知。 例如，处理器可以是图形处理单元（GPU），并且管理占空比的时间段可以是要在系统的用户观看的显示屏上显示的帧。