Tracing thermal data via performance monitoring

• US 9,097,590 B2
• Filed: 11/01/2010
• Issued: 08/04/2015
• Est. Priority Date: 11/29/2005
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Johns, Charles Ray, Wang, Michael Fan
• Primary Examiner(s): Lau, Tung S
• Application Number:
  US12/916,922
• Publication Number:
  US 20110040517A1
• Time in Patent Office: 1,737 Days
• Field of Search: 702/130
• US Class Current: 1/1
• CPC Class Codes: G01K 1/022 for recording
• CPC Class Codes: G01K 3/005 Circuits arrangements for indicating a predetermined temperature fire detection G08B17/00
• CPC Class Codes: G01K 7/015 using microstructures, e.g. made of silicon
• CPC Class Codes: G06F 1/206 comprising thermal management

Abstract

A data processing system and processor are provided for tracing thermal data via performance monitoring. A performance monitor is set into a tracing mode. Temperatures are sensed by a digital thermal sensor over a time period. The sensed temperatures are stored in a data structure and a trace of the sensed temperatures is graphically displayed.

Claims

1. A heterogeneous multi-core processor, comprising:

a first portion of the heterogeneous multi-core processor comprising a plurality of processor cores that includes a power processor core and a plurality of synergistic processor cores;

a second portion of the heterogeneous multi-core processor comprising a thermal management control state machine;

a third portion of the heterogeneous multi-core processor comprising a graphics processor; and

a fourth portion of the heterogeneous multi-core processor comprising a plurality of digital thermal sensors, wherein a digital thermal sensor of the plurality of digital thermal sensors is located in each processor core of the plurality of processor cores, and wherein the heterogeneous multi-core processor executes a set of instructions to set, using the thermal management control state machine, a performance monitor into a tracing mode;

sense, by the plurality of digital thermal sensors, temperatures of the plurality of processor cores over a time period;

store the sensed temperatures of the plurality of processor cores in a data structure; and

graphically display, using the graphics processor, a trace of the sensed temperatures of the plurality of processor cores of the heterogeneous multi-core processor.

2. The heterogeneous multi-core processor of claim 1, wherein the heterogeneous multi-core processor further executes the set of instructions to determine, using the thermal management control state machine, whether the performance monitor is still running;

and detect the sensed temperatures of the plurality of processor cores by the plurality of digital thermal sensors in response to determining that the performance monitor is still running.

3. The heterogeneous multi-core processor of claim 1, wherein the heterogeneous multi-core processor further executes the set of instructions to independently control, using the thermal management control state machine, a temperature of each processor core of the plurality of processor cores by dynamically controlling an amount of throttling applied to each specific processor core of the plurality of processor cores based on a respective sensed temperature of each specific processor core.