DELEGATED VIRTUALIZATION IN A MULTI-CORE PROCESSOR (MCP)

• US 20100082941A1
• Filed: 09/30/2008
• Published: 04/01/2010
• Est. Priority Date: 09/30/2008
• Status: Active Grant

• Current Assignee: Kyndryl Incorporated (Kyndryl Holdings, Inc.)
• Original Assignee: International Business Machines Corporation
• Inventors: Duvalsaint, Karl J., Hofstee, Harm P., Kim, Moon J., Kim, Daeik
• Granted Patent: US 8,438,404 B2
• Time in Patent Office: Days
• US Class Current: 712/30
• CPC Class Codes: G06F 2209/509 Offload
• CPC Class Codes: G06F 9/5027 the resource being a machine, e.g. CPUs, Servers, Terminals
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The disclosure is applied to a generic microprocessor architecture with a set (e.g., one or more) of controlling elements (e.g., MPEs) and a set of groups of sub-processing elements (e.g., SPEs). Under this arrangement, MPEs and SPEs are organized in a way that a smaller number MPEs control the behavior of a group of SPEs using program code embodied as a set of virtualized control threads. The arrangement also enables MPEs delegate functionality to one or more groups of SPEs such that those group(s) of SPEs will act as pseudo MPEs. The pseudo MPEs will utilize pseudo virtualized control threads to control the behavior of other groups of SPEs. In a typical embodiment, the apparatus includes a MCP coupled to a power supply coupled with cores to provide a supply voltage to each core (or core group) and controlling-digital elements and multiple instances of sub-processing elements.

Claims

1. A multi-core processor, comprising:

a main processing element comprising a set of virtualized control threads;

a first group of sub-processing elements associated with main processing element via at least one set of virtualized control threads; and

a group of sub-processing elements designated as a pseudo main processing element, the pseudo main processing element comprising a set of pseudo virtualized control threads.

2. The multi-core processor of claim 1, the pseudo main processing element associated with a second group of sub processing elements via the set of pseudo virtualized control threads.

3. The multi-core processor of claim 1, the first group of sub-processing elements comprising a plurality of sub-processing elements.

4. The multi-core processor of claim 1, the set of virtualized control threads being configured to send program code and data to the first group of sub-processing elements.

5. The multi-core processor of claim 4, the set of virtualized control threads being further configured to collect computation results from the first group of sub-processing elements.

6. The multi-core processor of claim 1, the set of virtualized control threads controlling a clock speed, power consumption and computation loading of the set of first group of sub-processing elements.

7. The multi-core processor of claim 1, the set of virtualized control threads being configured to send and receive power control requests between the main processing element and the first group of sub-processing elements.

8. The multi-core processor of claim 1, the pseudo main processing element associated with a second group of sub processing elements via the set of pseudo virtualized control threads.

9. A processing system, comprising:

a main processing element;

a first group of sub-processing elements;

a virtualized control thread associating the main processing element with the first group of sub-processing elements, the set of virtualized control threads controlling the first group of sub-processing elements;

a pseudo main processing element;

a second group of sub-processing elements; and

a pseudo virtualized control thread associating the pseudo main processing element with the second group of sub-processing elements, the set of virtualized control threads controlling the group of sub-processing elements.

10. The processing system of claim 9, the pseudo main processing element being a third group of sub-processing elements that have been delegated a set of functions from at least one of a set of main processing elements.

11. The processing system of claim 9, the virtualized control thread and the pseudo virtualized control thread being configured to send program code and data to the first group of sub-processing elements and the second group of sub-processing elements.

13. The processing system of claim 9, the virtualized control thread and the pseudo virtualized control thread controlling a clock speed, power consumption and computation loading of the first group of sub-processing elements and the second group of sub-processing elements.

12. The processing system of claim 12, the virtualized control thread and the pseudo virtualized control thread being further configured to collect computation results from the first group of sub-processing elements and the second group of sub-processing elements.

14. A processing method, comprising:

associating a main processing element with a first group of sub-processing element using a set of virtualized control threads;

delegating a set of functions of the main processing element to a second group of sub-processing elements to cause the second group of sub-processing elements to act as a pseudo main processing element;

associating the pseudo main processing element with a third group of sub-processing elements using a set of pseudo virtualized control threads; and

controlling the first group of sub-processing elements using the set of virtualized control threads and the third group of sub-processing elements using the set of pseudo virtualized control threads.

15. The processing method of claim 14, further comprising sending program code and data to the first group of sub-processing elements via the set of virtualized control threads and to the third set of groups of sub-processing elements via the set of pseudo virtualized control threads.

16. The processing method of claim 14, further comprising receiving computation results from the first group of sub-processing elements via the set of virtualized control threads and from the third group of sub-processing elements via the set of pseudo virtualized control threads.

17. The processing method of claim 14, the controlling comprising controlling a clock speed, a power consumption and a computation loading of the first group of sub-processing elements and the third group of sub-processing elements.

18. The processing method of claim 14, the set of virtualized control threads being embodied as program code within the set of main processing elements, and the set of pseudo virtualized control threads being embodied as program code within the pseudo main processing element.

19. The processing method of claim 14, the main processing element, the first group of sub-processing elements, the set of virtualized control threads, the pseudo main processing element, the third group of sub-processing elements, and the set of pseudo virtualized control threads comprising a multi-core processor.

20. A method for deploying a processing system, comprising:

providing a multi-core processor comprising;

a main processing element comprising a set of virtualized control threads;

a first group of sub-processing elements associated with main processing element via at least one of set of virtualized control threads; and

a group of sub-processing elements designated as a pseudo main processing element, the pseudo main element comprising a set of pseudo virtualized control threads.