# US 2025/0155949 A1 · Power governance of processing unit

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- Number: US 2025/0155949 A1
- Document ID: US20250155949A1
- Status: Published application
- Kind: A1
- Application number: 19/020,187
- Filed: 2025-01-14
- Published: 2025-05-15
- Earliest claimed: 2020-03-25
- Assignees: Tahoe Research, Ltd.
- Applicants: Tahoe Research, Ltd.
- Inventors: Barnes COOPER; Harinarayanan SESHADRI; Rajeev MURALIDHAR; Noor MUBEEN
- Web page: https://patentgrep.com/patent/US20250155949A1

## CPC

- G06F 1/26: Power supply means, e.g. regulation thereof (for memories G11C)
- G06F 1/3228: Monitoring task completion, e.g. by use of idle timers, stop commands or wait commands
- G06F 1/28: Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
- G06F 1/30: Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations (for resetting only G06F1/24)
- G06F 1/3206: Monitoring of events, devices or parameters that trigger a change in power modality
- G06F 1/3234: Power saving characterised by the action undertaken
- G06F 1/324: by lowering clock frequency
- G06F 1/329: by task scheduling
- G06F 1/3296: by lowering the supply or operating voltage
- Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

Power governance circuitry is provided to control a performance level of a processing unit of a processing platform. The power governance circuitry comprises measurement circuitry to measure a current utilization of the processing unit at a current operating frequency and to determine any change in utilization or power and frequency control circuitry is provided to update the current operating frequency to a new operating frequency by determining a new target quantified power expenditure to be applied in a subsequent processing cycle depending on the determination of any change in utilization or power. A new operating frequency is selected to satisfy the new target quantified power based on a scalability function specifying a variation of a given value of utilization or power with the operating frequency. A processing platform and machine readable instructions are provided to set a new quantified target power of a processing unit.

## Claims

### Claim 1

Power governance circuity comprising:
measurement circuitry to:
measure a current utilization of a processing unit (PU) at a current operating frequency; and
determine, based on the measured current utilization, a change in utilization or power of the PU; and
frequency control circuitry to:
determine, based on the identified change in utilization or power, a new target quantified power expenditure to be applied in a subsequent processing cycle of the PU; and
identify, based on the new target quantified power expenditure, a new operating frequency for the PU; and
update a current operating frequency of the PU to the new operating frequency.

### Claim at position 2

-20. (canceled)