Modulating CPU frequency and voltage in a multi-core CPU...

Data processing: generic control systems or specific application – Generic control system – apparatus or process – Having protection or reliability feature

Reexamination Certificate

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Details

C713S322000, C713S340000

Reexamination Certificate

active

06711447

ABSTRACT:

FIELD OF THE INVENTION
The present invention pertains to the field of computer architecture design. More particularly, the present invention relates to a method of modulating the frequency and voltage of a central processing unit core based on the level of multi-threadedness.
BACKGROUND OF THE INVENTION
A computer typically executes program codes of an application using a single processing thread. Computers, however, are not limited to single-threaded (ST) workloads. In a multi-threaded (MT) workload, the execution of the program is divided into several related, yet at least partially independent tasks. The tasks are performed in parallel with one another on separate processing cores.
While a MT workload typically provides better performance over a ST workload, the MT workload also consumes more power. In battery powered computer systems such as a laptop or notebook, the higher the power consumption, the faster the remaining battery life is depreciated.


REFERENCES:
patent: 6501999 (2002-12-01), Cai
patent: 6631474 (2003-10-01), Cai et al.
patent: 2003/0088800 (2003-05-01), Cai

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