Back to results
US 2013/0173948 A1Published application
Frequency And Voltage Scaling Architecture
AssigneeIntel Corporation
InventorsGrigorios Magklis, Jose Gonzalez, Antonio Gonzalez
Life of this patent
Estimating the term…
Abstract
A method and apparatus for scaling frequency and operating voltage of at least one clock domain of a microprocessor. More particularly, embodiments of the invention relate to techniques to divide a microprocessor into clock domains and control the frequency and operating voltage of each clock domain independently of the others.
Claims20
A processor comprising:
- a first clock domain to operate at a first clock frequency, the first clock domain including a renaming unit and a decoding unit;
- a second clock domain to operate at a second clock frequency, the second clock domain including at least one execution unit;
- and
- a third clock domain to operate at a third clock frequency, the third clock domain including a cache memory, wherein the first clock frequency is to be adjusted to minimize a ratio of an energy performance product of the first clock domain between a first time interval and a second time interval.
1 more element
A method comprising:
- determining energy and delay of a processor clock domain of a multi-domain processor for a first interval of time;
- estimating energy and delay of the processor clock domain for a second interval of time, wherein the second interval of time is later than the first interval of time;
- and
- adjusting an operating voltage of the processor clock domain such that a ratio of a product of the energy and delay for the second interval of time and a product of the energy and delay for the first interval of time is minimized.
1 more element
A system comprising:
- a memory to store a plurality of instructions;
- and
- a processor including a plurality of clock domains to operate at a plurality of independent clock frequencies, wherein at least one of the plurality of independent clock frequencies for a second time interval is to be selected based on an energy and delay calculation for a first time interval and an energy and delay estimation for the second time interval.
Dependencies are inferred from the claim text.