公开(公告)号：US20180143853A1

公开(公告)日：2018-05-24

申请号：US15398864

申请日：2017-01-05

Applicant: QUALCOMM INCORPORATED

Inventor： Mehdi Saeidi ,  Niladri Mojumder ,  Min Chen ,  Rajat Mittal ,  Rajit Chandra

IPC: G06F9/48 ,  G06F9/445

CPC classification number: G06F9/44505 ,  G06F9/5027 ,  G06F9/5061

Abstract: A system includes a computer processor including N cores; and a plurality of device aging sensors, wherein each one of the plurality of device aging sensors is disposed within a respective core, the plurality of device aging sensors being configured to communicate core aging information with a core scheduler in the computer processor, wherein the core scheduler is configured to make a first set of M cores available to a thread scheduler and remaining cores of the N cores unavailable to the thread scheduler in a first time period in which the core aging information indicates that aging of the first set of M cores is below a threshold, and wherein the core scheduler is configured to make a second set of M cores available to the thread scheduler and remaining cores of the N cores unavailable to the thread scheduler in a second time period.

公开(公告)号：US09582052B2

公开(公告)日：2017-02-28

申请号：US14675409

申请日：2015-03-31

Applicant: QUALCOMM Incorporated

Inventor： Rajat Mittal ,  Madan Krishnappa ,  Rajit Chandra ,  Mohammad Tamjidi

IPC: G06F1/26 ,  G06F9/455 ,  G06F1/20 ,  G06F9/50 ,  G06F9/48 ,  G06F1/32

CPC classification number: G06F1/324 ,  G06F1/206 ,  G06F1/3203 ,  G06F1/3206 ,  G06F1/3287 ,  G06F1/329 ,  G06F1/3296 ,  G06F9/4856 ,  G06F9/5088 ,  G06F9/5094 ,  Y02D10/126 ,  Y02D10/16 ,  Y02D10/171 ,  Y02D10/172 ,  Y02D10/22 ,  Y02D10/24 ,  Y02D10/32

Abstract: A method, an apparatus, and a computer program product are provided. The apparatus may be a UE. The UE has a processor including a plurality of cores. The plurality of cores includes a first core and remaining cores. The UE determines a temperature of the first core of the plurality of cores. The first core processes a load. The UE determines that the temperature of the first core is greater than a first threshold. The UE determines that the temperature of the first core is not greater than a second threshold. The second threshold is greater than the first threshold. The UE transfers at least a portion of the load of the first core to a second core of the remaining cores in response to determining that the temperature of the first core is greater than the first threshold.

Abstract translation: 提供了一种方法，装置和计算机程序产品。 该装置可以是UE。 UE具有包括多个核的处理器。 多个芯包括第一芯和剩余芯。 UE确定多个核心的第一核心的温度。 第一个核心处理一个负载。 UE确定第一核的温度大于第一阈值。 UE确定第一核心的温度不大于第二阈值。 第二阈值大于第一阈值。 响应于确定第一核心的温度大于第一阈值，UE将第一核心的至少一部分负载传送到剩余核心的第二核心。

公开(公告)号：US10309838B2

公开(公告)日：2019-06-04

申请号：US15260194

申请日：2016-09-08

Applicant: QUALCOMM Incorporated

Inventor： Ali Akbar Merrikh ,  Martin Saint-Laurent ,  Mohammad Ghasemazar ,  Rajit Chandra ,  Mohamed Allam

IPC: G01K1/20 ,  G01K1/14 ,  G01K7/01 ,  G01K7/42 ,  G06F1/20 ,  G01K15/00

Abstract: A temperature sensor position offset error correction power implementation include monitors (e.g., digital power monitor/meter) to measure activity on a die, and uses the activity measurements to compute real-time temperature offsets by converting activity to power, which can be used in a simplified compact thermal model. A system on chip including the die receives a temperature measurement of a region of the system on chip from a sensor. Power consumed by the region is estimated based on the measured activity, and temperature measurement of the system on chip is adjusted based on the estimated power.

公开(公告)号：US10591531B2

公开(公告)日：2020-03-17

申请号：US15177964

申请日：2016-06-09

Applicant: QUALCOMM Incorporated

Inventor： Rajit Chandra ,  Melika Roshandell ,  Niladri Mojumder

IPC: G01R31/28

Abstract: An apparatus is disclosed. The apparatus includes a circuit, a conductor interconnecting a portion of the circuit, and a processor configured to determine a temperature of the conductor and adjust at least one parameter related to the conductor in response to the determined temperature rising above a threshold. The at least one parameter includes a lifetime estimate for the conductor. A method of operating an apparatus including a circuit and a conductor interconnecting a portion of the circuit is disclosed. The method includes determining a temperature of the conductor, and adjusting at least one parameter related to the conductor in response to the determined temperature rising above a threshold. The parameter includes a lifetime estimate for the conductor.

公开(公告)号：US10416737B2

公开(公告)日：2019-09-17

申请号：US14532980

申请日：2014-11-04

Applicant: QUALCOMM Incorporated

Inventor： Rajit Chandra

IPC: G06F11/30 ,  G06F1/20 ,  G05B13/04 ,  G06F1/3234

Abstract: An apparatus is presented. The apparatus includes a first circuit configured to predict temperatures of a location for a plurality of time instances based on measured temperatures and a second circuit configured to schedule a thermal mitigation function based on the predicted temperatures. A method of operating an apparatus is presented. The method includes measuring temperatures on an integrated circuit, predicting temperatures of a location for a plurality of time instances based on the measured temperatures, and scheduling a thermal mitigation function based on the predicted temperatures. An apparatus is presented. The apparatus includes means for measuring temperatures on an integrated circuit, means for predicting temperatures of a location for a plurality of time instances based on measured temperatures, and means for scheduling a thermal mitigation function based on the predicted temperatures.

公开(公告)号：US09557797B2

公开(公告)日：2017-01-31

申请号：US14319393

申请日：2014-06-30

Applicant: QUALCOMM Incorporated

Inventor： Rajat Mittal ,  Mehdi Saeidi ,  Tao Xue ,  Ronald Frank Alton ,  Rajit Chandra ,  Sachin Dasnurkar

IPC: G06F1/32 ,  G06F9/50

CPC classification number: G06F1/3234 ,  G06F1/28 ,  G06F1/3203 ,  G06F1/3206 ,  G06F1/329 ,  G06F1/3293 ,  G06F9/5094 ,  Y02D10/122 ,  Y02D10/22 ,  Y02D10/24

Abstract: Aspects include computing devices, systems, and methods for selecting preferred processor core combinations for a state of a computing device. In an aspect, a state of a computing device containing the multi-core processor may be determined. A number of current leakage ratios may be determined by comparing current leakages of the processor cores to current leakages of the other processor cores. The ratios may be compared to boundaries for the state of the computing device in respective inequalities. A processor core associated with a number of boundaries may be selected in response to determining that the respective inequalities are true. The boundaries may be associated with a set of processor cores deemed preferred for an associated state of the computing device. The processor core present in the set of processor cores for each boundary of a true inequality may be the selected processor core.

Abstract translation: 方面包括用于为计算设备的状态选择优选处理器核心组合的计算设备，系统和方法。 在一方面，可以确定包含多核处理器的计算设备的状态。 可以通过将处理器核心的当前泄漏与其他处理器核心的当前泄漏进行比较来确定多个电流泄漏比。 可以将这些比率与各个不等式中的计算装置的状态的边界进行比较。 响应于确定相应的不等式是真实的，可以选择与多个边界相关联的处理器核心。 边界可以与被认为对于计算设备的相关状态优选的一组处理器核心相关联。 存在于真正不等式的每个边界的处理器核心集合中的处理器核心可以是所选择的处理器核心。

公开(公告)号：US20150338902A1

公开(公告)日：2015-11-26

申请号：US14319393

申请日：2014-06-30

Applicant: QUALCOMM Incorporated

Inventor： Rajat MITTAL ,  Mehdi Saeidi ,  Tao Xue ,  Ronald Frank Alton ,  Rajit Chandra ,  Sachin Dasnurkar

IPC: G06F1/32

CPC classification number: G06F1/3234 ,  G06F1/28 ,  G06F1/3203 ,  G06F1/3206 ,  G06F1/329 ,  G06F1/3293 ,  G06F9/5094 ,  Y02D10/122 ,  Y02D10/22 ,  Y02D10/24

Abstract: Aspects include computing devices, systems, and methods for selecting preferred processor core combinations for a state of a computing device. In an aspect, a state of a computing device containing the multi-core processor may be determined. A number of current leakage ratios may be determined by comparing current leakages of the processor cores to current leakages of the other processor cores. The ratios may be compared to boundaries for the state of the computing device in respective inequalities. A processor core associated with a number of boundaries may be selected in response to determining that the respective inequalities are true. The boundaries may be associated with a set of processor cores deemed preferred for an associated state of the computing device. The processor core present in the set of processor cores for each boundary of a true inequality may be the selected processor core.

Abstract translation: 方面包括用于为计算设备的状态选择优选处理器核心组合的计算设备，系统和方法。 在一方面，可以确定包含多核处理器的计算设备的状态。 可以通过将处理器核心的当前泄漏与其他处理器核心的当前泄漏进行比较来确定多个电流泄漏比。 可以将这些比率与各个不等式中的计算装置的状态的边界进行比较。 响应于确定相应的不等式是真实的，可以选择与多个边界相关联的处理器核心。 边界可以与被认为对于计算设备的相关状态优选的一组处理器核心相关联。 存在于真正不等式的每个边界的处理器核心集合中的处理器核心可以是所选择的处理器核心。

公开(公告)号：US10114443B2

公开(公告)日：2018-10-30

申请号：US15441124

申请日：2017-02-23

Applicant: QUALCOMM Incorporated

Inventor： Rajat Mittal ,  Madan Krishnappa ,  Rajit Chandra ,  Mohammad Tamjidi

IPC: G06F1/32 ,  G06F1/20 ,  G06F9/50 ,  G06F9/48

Abstract: A thermal controller for managing thermal energy of a multi-core processor is provided. The cores include a first core processing a load and remaining cores. The thermal controller is configured to determine that a temperature of the first core is greater than a first threshold, determine a temperature of a second core of the remaining cores in response to determining that the temperature of the first core is greater than the first threshold, and determine whether the temperature of the second core is greater than or less than a second threshold. The thermal controller is configured to transfer at least a portion of the load of the first core to the second core in response to determining that the temperature of the first core is greater than the first threshold and based on whether the temperature of the second core is greater than or less than the second threshold.