Optimizing power and performance using software and hardware thermal profiles

• US 20070124618A1
• Filed: 11/29/2005
• Published: 05/31/2007
• Est. Priority Date: 11/29/2005
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Aguilar, Maximino, Johns, Charles, Stafford, James, Nutter, Mark
• Application Number:
  US11/289,090
• Publication Number:
  US 20070124618A1
• Time in Patent Office: Days
• US Class Current: 713/322
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A computer implemented method, data processing system, and computer usable code are provided for using software and hardware thermal profiles to schedule the execution of applications. Hardware and software thermal profiles are generated for a set of processors and a set of applications, respectively, to form a plurality of hardware and software thermal profiles. Then a set of hardware and software thermal profiles are selected from the plurality of hardware and software thermal profiles. The set of software thermal profiles and the set of hardware thermal profiles are used to generate a thermal index. Finally, the execution of the set of applications is scheduled using the thermal index.

Claims

1. A computer implemented method using software and hardware thermal profiles to schedule the execution of applications, the computer implemented method comprising:

generating the software thermal profiles for a set of applications to form a plurality of software thermal profiles;

generating the hardware thermal profiles for a set of processors to form a plurality of hardware thermal profiles;

selecting a set of software thermal profiles from the plurality of software thermal profiles;

selecting a set of hardware thermal profiles from the plurality of hardware thermal profiles;

generating a thermal index based on the set of software thermal profiles and the set of hardware thermal profiles; and

scheduling the execution of the set of applications using the thermal index.

2. The computer implemented method of claim 1, further comprising:

storing the plurality of software thermal profiles and the set of hardware thermal profiles in a data structure.

3. The computer implemented method of claim 1, wherein the software thermal profiles are created by analyzing a set of instruction streams for the set of applications being executed by the set of processors to create analyzed information and wherein the analyzed information is cycles-per-instruction of the set of applications.

4. The computer implemented method of claim 1, wherein the thermal index is a thermal efficiency of the set of applications.

5. The computer implemented method of claim 3, wherein the instruction streams are analyzed for a predetermined amount of time.

6. The computer implemented method of claim 3, wherein the thermal index is proportional to the inverse of the cycles-per-instruction of the set of applications.

7. The computer implemented method of claim 1, wherein the software thermal profiles are created by analyzing a set of instruction streams for the set of applications being executed by the set of processors to create analyzed information and wherein the analyzed information is cycles-per-byte.

8. The computer implemented method of claim 7, wherein the cycles-per-byte are transferred from at least one of a set of execution units or a set of data flow units.

9. The computer implemented method of claim 1, wherein the thermal index is generated by a compiler.

10. The computer implemented method of claim 1, wherein the thermal index is a single number.

11. The computer implemented method of claim 8, wherein the thermal index is a weighted sum of the analyzed information representing the intensity of at least one of the set of execution units or the set of data flow units.

12. The computer implemented method of claim 8, wherein the thermal index is a vector of values for at least one of the set of execution units or the set of data flow units.

13. The computer implemented method of claim 1, wherein the hardware thermal profile is at least one of sampled information of hardware operations or thermal states of the set of processors.

14. The computer implemented method of claim 4, wherein the sampled information is gathered through the use of instrumentation built into the set of processors.

15. The computer implemented method of claim 4, wherein the sampled information of hardware operations is at least one of instruction activity, cache activity, bus activity, or memory accesses.

16. A data processing system comprising:

a bus system;

a communications system connected to the bus system;

a memory connected to the bus system, wherein the memory includes a set of instructions; and

a processing unit connected to the bus system, wherein the processing unit executes the set of instructions to generate the software thermal profiles for a set of applications to form a plurality of software thermal profiles;

generate the hardware thermal profiles for a set of processors to form a plurality of hardware thermal profiles;

select a set of software thermal profiles from the plurality of software thermal profiles;

select a set of hardware thermal profiles from the plurality of hardware thermal profiles;

generate a thermal index based on the set of software thermal profiles and the set of hardware thermal profiles; and

schedule the execution of the set of applications using the thermal index.

17. The data processing system of claim 16, wherein the processing unit executes the set of instructions to store the plurality of software thermal profiles and the set of hardware thermal profiles in a data structure.

18. A computer program product comprising:

a computer usable medium including computer usable program code for using software and hardware thermal profiles to schedule the execution of applications, the computer program product including;

computer usable program code for generating the software thermal profiles for a set of applications to form a plurality of software thermal profiles;

computer usable program code for generating the hardware thermal profiles for a set of processors to form a plurality of hardware thermal profiles;

computer usable program code for selecting a set of software thermal profiles from the plurality of software thermal profiles;

computer usable program code for selecting a set of hardware thermal profiles from the plurality of hardware thermal profiles;

computer usable program code for generating a thermal index based on the set of software thermal profiles and the set of hardware thermal profiles; and

computer usable program code for scheduling the execution of the set of applications using the thermal index.

19. The computer program product of claim 18, further including:

computer usable program code for storing the plurality of software thermal profiles and the set of hardware thermal profiles in a data structure.

20. The computer program product of claim 18, wherein the software thermal profiles are created by analyzing a set of instruction streams for the set of applications being executed by the set of processors to create analyzed information and wherein the analyzed information is cycles-per-instruction of the set of applications.