公开(公告)号：US09977699B2

公开(公告)日：2018-05-22

申请号：US14936686

申请日：2015-11-10

Applicant: MediaTek Inc.

Inventor： Jia-Ming Chen ,  Hung-Lin Chou ,  Ya-Ting Chang ,  Shih-Yen Chiu ,  Chia-Hao Hsu ,  Yu-Ming Lin ,  Wan-Ching Huang ,  Jen-Chieh Yang ,  Pi-Cheng Hsiao

IPC: G06F9/46 ,  G06F9/50 ,  G06F1/32

CPC classification number: G06F9/5094 ,  G06F1/3206 ,  G06F1/3287 ,  G06F1/329 ,  G06F2209/505 ,  Y02D10/171 ,  Y02D10/22 ,  Y02D10/24

Abstract: A multi-cluster system having processor cores of different energy efficiency characteristics is configured to operate with high efficiency such that performance and power requirements can be satisfied. The system includes multiple processor cores in a hierarchy of groups. The hierarchy of groups includes: multiple level-1 groups, each level-1 group including one or more of processor cores having identical energy efficiency characteristics, and each level-1 group configured to be assigned tasks by a level-1 scheduler; one or more level-2 groups, each level-2 group including respective level-1 groups, the processor cores in different level-1 groups of the same level-2 group having different energy efficiency characteristics, and each level-2 group configured to be assigned tasks by a respective level-2 scheduler; and a level-3 group including the one or more level-2 groups and configured to be assigned tasks by a level-3 scheduler.

公开(公告)号：US20150324234A1

公开(公告)日：2015-11-12

申请号：US14650862

申请日：2014-11-14

Applicant: MEDIATEK INC.

Inventor： Ya-Ting Chang ,  Jia-Ming Chen ,  Yu-Ming Lin ,  Tzu-Jen Lo ,  Tung-Feng Yang ,  Yin Chen ,  Hung-Lin Chou

IPC: G06F9/50

CPC classification number: G06F9/5016 ,  G06F9/5033

Abstract: A task scheduling method for a multi-core processor system includes at least the following steps: when a first task belongs to a thread group currently in the multi-core processor system, where the thread group has a plurality of tasks sharing same specific data and/or accessing same specific memory address(es), and the tasks comprise the first task and at least one second task, determining a target processor core in the multi-core processor system based at least partly on distribution of the at least one second task in at least one run queue of at least one processor core in the multi-core processor system, and dispatching the first task to a run queue of the target processor core.

Abstract translation: 用于多核处理器系统的任务调度方法至少包括以下步骤：当第一任务属于当前在多核处理器系统中的线程组时，线程组具有共享相同特定数据的多个任务， /或访问相同的特定存储器地址，并且任务包括第一任务和至少一个第二任务，至少部分地基于至少一个第二任务的分布来确定多核处理器系统中的目标处理器核心 在所述多核处理器系统中的至少一个处理器核心的至少一个运行队列中，并且将所述第一任务分派到所述目标处理器核心的运行队列。

公开(公告)号：US10055259B2

公开(公告)日：2018-08-21

申请号：US14967387

申请日：2015-12-14

Applicant: MEDIATEK INC.

Inventor： Tzu-Jen Lo ,  Yu-Ming Lin ,  Jia-Ming Chen ,  Ya-Ting Chang ,  Nicholas Ching Hui Tang ,  Yin Chen ,  Hung-Lin Chou

IPC: G06F9/46 ,  G06F9/50

CPC classification number: G06F9/505 ,  G06F9/46

Abstract: A method for performing processor resource allocation in an electronic device is provided, where the method may include the steps of: obtaining task-related information to determine whether a task of a plurality of tasks is a heavy task (e.g. the heavy task may correspond to heavier loading than others of the plurality of tasks), to selectively utilize a specific processor core within a plurality of processor cores to perform the task, and determining whether at least one scenario task exists within others of the plurality of tasks, to selectively determine according to application requirements a minimum processor core count and a minimum operating frequency for performing the at least one scenario task; and performing processor resource allocation according to a power table and system loading, to perform any remaining portion of the plurality of tasks. An apparatus for performing processor resource allocation according to the above method is provided.

公开(公告)号：US10031573B2

公开(公告)日：2018-07-24

申请号：US14931923

申请日：2015-11-04

Applicant: MediaTek Inc.

Inventor： Jia-Ming Chen ,  Hung-Lin Chou ,  Pi-Cheng Hsiao ,  Ya-Ting Chang ,  Yun-Ching Li ,  Yu-Ming Lin

IPC: G06F9/46 ,  G06F1/32 ,  G06F9/50

CPC classification number: G06F1/3287 ,  G06F1/3206 ,  G06F1/324 ,  G06F9/4812 ,  G06F9/5088 ,  G06F9/5094 ,  Y02D10/126 ,  Y02D10/171 ,  Y02D50/20

Abstract: Energy efficiency is managed in a multi-cluster system. The system detects an event in which a current operating frequency of an active cluster enters or crosses any of one or more predetermined frequency spots of the active cluster, wherein the active cluster includes one or more first processor cores. When the event is detected, the system performs the following steps: (1) identifying a target cluster including one or more second processor cores, wherein the each first processor core in the first cluster and each second processor core in the second cluster have different energy efficiency characteristics; (2) activating at least one second processor core in the second cluster; (3) determining whether to migrate one or more interrupt requests from the first cluster to the second cluster; and (4) determining whether to deactivate at least one first processor core of the active cluster based on a performance and power requirement.

公开(公告)号：US20150121388A1

公开(公告)日：2015-04-30

申请号：US14516566

申请日：2014-10-16

Applicant: MEDIATEK INC.

Inventor： Ya-Ting Chang ,  Jia-Ming Chen ,  Yu-Ming Lin ,  Yin Chen ,  Hung-Lin Chou ,  Yeh-Ji Chou ,  Shou-Wen Ho

IPC: G06F9/48 ,  G06F9/54

CPC classification number: G06F9/4881 ,  G06F9/52 ,  G06F2209/483 ,  G06F2209/501

Abstract: A task scheduling method is applied to a heterogeneous multi-core processor system. The heterogeneous multi-core processor system has at least one first processor core and at least one second processor core. The task scheduling method includes: referring to task priorities of tasks of the heterogeneous processor cores to identify at least one first task of the tasks that belongs to a first priority task group, wherein each first task belonging to the first priority task group has a task priority not lower than task priorities of other tasks not belonging to the first priority task group; and dispatching at least one of the at least one first task to at least one run queue of at least one of the at least one first processor core.

Abstract translation: 任务调度方法应用于异构多​​核处理器系统。 异构多核处理器系统具有至少一个第一处理器核心和至少一个第二处理器核心。 任务调度方法包括：参考异构处理器核的任务的任务优先级，以识别属于第一优先级任务组的任务的至少一个第一任务，其中属于第一优先级任务组的每个第一任务具有任务 优先级不低于不属于第一优先级任务组的其他任务的任务优先级; 以及将所述至少一个第一任务中的至少一个调度到所述至少一个第一处理器核心中的至少一个的至少一个运行队列。

公开(公告)号：US09858115B2

公开(公告)日：2018-01-02

申请号：US14516566

申请日：2014-10-16

Applicant: MEDIATEK INC.

Inventor： Ya-Ting Chang ,  Jia-Ming Chen ,  Yu-Ming Lin ,  Yin Chen ,  Hung-Lin Chou ,  Yeh-Ji Chou ,  Shou-Wen Ho

IPC: G06F9/46 ,  G06F9/48 ,  G06F9/52

CPC classification number: G06F9/4881 ,  G06F9/52 ,  G06F2209/483 ,  G06F2209/501

Abstract: A task scheduling method is applied to a heterogeneous multi-core processor system. The heterogeneous multi-core processor system has at least one first processor core and at least one second processor core. The task scheduling method includes: referring to task priorities of tasks of the heterogeneous processor cores to identify at least one first task of the tasks that belongs to a first priority task group, wherein each first task belonging to the first priority task group has a task priority not lower than task priorities of other tasks not belonging to the first priority task group; and dispatching at least one of the at least one first task to at least one run queue of at least one of the at least one first processor core.

公开(公告)号：US09852005B2

公开(公告)日：2017-12-26

申请号：US14799921

申请日：2015-07-15

Applicant: MediaTek Inc.

Inventor： Ya-Ting Chang ,  Yu-Ting Chen ,  Yu-Ming Lin ,  Jia-Ming Chen ,  Hung-Lin Chou ,  Tzu-Jen Lo

IPC: G06F9/48

CPC classification number: G06F9/4881 ,  G06F2209/483

Abstract: A multi-core processor system and a method for assigning tasks are provided. The multi-core processor system includes a plurality of processor cores, configured to perform a plurality of tasks, and each of the tasks is in a respective one of a plurality of scheduling classes. The multi-core processor system further includes a task scheduler, configured to obtain first task assignment information about tasks in a first scheduling class assigned to the processor cores, obtain second task assignment information about tasks in one or more other scheduling classes assigned to the processor cores, and refer to the first task assignment information and the second task assignment information to assign a runnable task in the first scheduling class to one of the processor cores.

公开(公告)号：US20170023997A1

公开(公告)日：2017-01-26

申请号：US15071780

申请日：2016-03-16

Applicant: MediaTek Inc.

Inventor： Jia-Ming Chen ,  Hung-Lin Chou ,  Pi-Cheng Hsiao ,  Yen-Lin Lee ,  Ya-Ting Chang ,  Jih-Ming Hsu

IPC: G06F1/32 ,  G06F9/50 ,  G06F1/26

CPC classification number: G06F1/3234 ,  G06F1/263 ,  G06F1/3206 ,  G06F1/3287 ,  G06F9/5094 ,  Y02D10/171

Abstract: A switch interconnect is dynamically controlled at runtime to connect power sources to processing units in a multiprocessor system. Each power source is shareable by the processing units and each processing unit has a required voltage for processing a workload. When a system condition is detected at runtime, the switch interconnect is controlled to change a connection between at least one processing unit and a shared power source to maximize power efficiency. The shared power source is one of the power sources that supports multiple processing units having different required voltages.

Abstract translation: 交换机互连在运行时动态控制，以将电源连接到多处理器系统中的处理单元。 每个电源可由处理单元共享，并且每个处理单元具有用于处理工作负载的所需电压。 当在运行时检测到系统条件时，控制开关互连以改变至少一个处理单元和共享电源之间的连接以最大化功率效率。 共享电源是支持具有不同所需电压的多个处理单元的电源之一。

公开(公告)号：US20170269629A1

公开(公告)日：2017-09-21

申请号：US15440884

申请日：2017-02-23

Applicant: MediaTek Inc.

Inventor： Hung-Lin Chou ,  Chih-Yung Chiu ,  Yu-Chung Chang ,  Chieh-Yuan Hsu

IPC: G06F1/08 ,  G06F9/50

CPC classification number: G06F1/08 ,  G06F1/3203 ,  G06F1/324 ,  G06F1/329 ,  G06F1/3293 ,  G06F9/505 ,  G06F9/5083 ,  Y02D10/122 ,  Y02D10/126 ,  Y02D10/24

Abstract: A multiprocessor system includes a first set of processors and a second set of processors. The first set of processors include a first set of standard cells and is configured to operate in a first frequency range. The second set of processors include a second set of standard cells and is configured to operate in a second frequency range. The first set of processors and the second set of processors have the same register-transfer level (RTL) description. Cells in the first set of standard cells have corresponding cells in the second set of standard cells with different characteristics. The first frequency range includes one or more frequencies higher than a maximum frequency in the second frequency range. The system also includes a clock generator that provides the same frequency to the first set of processors and the second set of processors.

公开(公告)号：US20160350156A1

公开(公告)日：2016-12-01

申请号：US14967387

申请日：2015-12-14

Applicant: MEDIATEK INC.

Inventor： Tzu-Jen Lo ,  Yu-Ming Lin ,  Jia-Ming Chen ,  Ya-Ting Chang ,  Nicholas Ching Hui Tang ,  Yin Chen ,  Hung-Lin Chou

IPC: G06F9/50

CPC classification number: G06F9/505 ,  G06F9/46

Abstract: A method for performing processor resource allocation in an electronic device is provided, where the method may include the steps of: obtaining task-related information to determine whether a task of a plurality of tasks is a heavy task (e.g. the heavy task may correspond to heavier loading than others of the plurality of tasks), to selectively utilize a specific processor core within a plurality of processor cores to perform the task, and determining whether at least one scenario task exists within others of the plurality of tasks, to selectively determine according to application requirements a minimum processor core count and a minimum operating frequency for performing the at least one scenario task; and performing processor resource allocation according to a power table and system loading, to perform any remaining portion of the plurality of tasks. An apparatus for performing processor resource allocation according to the above method is provided.

Abstract translation: 提供了一种用于在电子设备中执行处理器资源分配的方法，其中该方法可以包括以下步骤：获得任务相关信息以确定多个任务的任务是否是重任务（例如重任务可能对应于 选择性地利用多个处理器核心内的特定处理器核心来执行任务，以及确定在所述多个任务的其他任务内是否存在至少一个场景任务，以选择性地确定 对应用需求的最小处理器核心数和用于执行所述至少一个场景任务的最小操作频率; 以及根据功率表和系统加载来执行处理器资源分配，以执行所述多个任务的任何剩余部分。 提供了一种根据上述方法执行处理器资源分配的装置。