公开(公告)号：US10921876B2

公开(公告)日：2021-02-16

申请号：US15963307

申请日：2018-04-26

Applicant: MediaTek Inc.

Inventor： Jih-Ming Hsu ,  Tai-Hua Lu ,  Pei-Yu Huang ,  Chien-Yuan Lai ,  Shu-Hsuan Chou ,  I-Cheng Cheng ,  Yun-Ching Li ,  Ming Hsien Lee

IPC: G06F1/329 ,  G06F1/3203 ,  G06F1/3209 ,  G06F1/3206

Abstract: Power and performance of a multi-core system is managed dynamically by adjusting power table indices at runtime. Runtime statistics is measured, when an application is executed on a first core of a first type at a first operating point (OPP) in a first time period, and on a second core of a second core type at a second OPP in a second time period. A controller estimates, based on the runtime statistics, a first pair of indices associated with a first OPP for the first core and a second pair of indices associated with a second OPP for the second core. During runtime, the controller incorporates the first pair of indices and the second pair of indices into power table indices; and determines, from the power table indices, selected indices associated with a selected OPP of a core of a selected core type for executing the application.

公开(公告)号：US20190332157A1

公开(公告)日：2019-10-31

申请号：US15963307

申请日：2018-04-26

Applicant: MediaTek Inc.

Inventor： Jih-Ming Hsu ,  Tai-Hua Lu ,  Pei-Yu Huang ,  Chien-Yuan Lai ,  Shu-Hsuan Chou ,  I-Cheng Cheng ,  Yun-Ching Li ,  Ming Hsien Lee

IPC: G06F1/32

Abstract: Power and performance of a multi-core system is managed dynamically by adjusting power table indices at runtime. Runtime statistics is measured, when an application is executed on a first core of a first type at a first operating point (OPP) in a first time period, and on a second core of a second core type at a second OPP in a second time period. A controller estimates, based on the runtime statistics, a first pair of indices associated with a first OPP for the first core and a second pair of indices associated with a second OPP for the second core. During runtime, the controller incorporates the first pair of indices and the second pair of indices into power table indices; and determines, from the power table indices, selected indices associated with a selected OPP of a core of a selected core type for executing the application.