US 12,248,351 B2
Power governance of processing unit
Barnes Cooper, Hillsboro, OR (US); Harinarayanan Seshadri, Bangalore (IN); Rajeev Muralidhar, Bangalore (IN); and Noor Mubeen, Bangalore (IN)
Assigned to Tahoe Research, Ltd., Dublin (IE)
Filed by Tahoe Research, Ltd., Dublin (IE)
Filed on Mar. 8, 2023, as Appl. No. 18/180,462.
Application 18/180,462 is a continuation of application No. 17/481,232, filed on Sep. 21, 2021, granted, now 11,604,504, issued on Mar. 14, 2023.
Application 17/481,232 is a continuation of application No. 16/650,782, granted, now 11,132,046, issued on Sep. 28, 2021, previously published as PCT/US2017/066813, filed on Dec. 15, 2017.
Prior Publication US 2023/0221786 A1, Jul. 13, 2023
Int. Cl. G06F 1/32 (2019.01); G06F 1/3228 (2019.01); G06F 1/329 (2019.01); G06F 1/3296 (2019.01)
CPC G06F 1/3228 (2013.01) [G06F 1/329 (2013.01); G06F 1/3296 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A processing platform comprising:
a plurality of processing units (PUs);
platform power governance circuitry to control an allocation of system power to the plurality of PUs;
measurement circuitry configured to:
measure a current utilization of one or more of the plurality of PUs at a current operating frequency using architectural performance counters, and
determine, based on the measured current utilization using architectural performance counters, a change in utilization or power of the one or more of the plurality of PUs; and
frequency control circuitry configured to:
determine, based on the identified change in utilization or power, a new target quantified power expenditure of the one or more of the plurality of PUs,
identify, based on the new target quantified power expenditure, a new operating frequency for the one or more of the plurality of PUs, and
update the current operating frequency of the one or more of the plurality of PUs to the new operating frequency,
wherein the measured current utilization of the one or more of the plurality of PUs at the current operating frequency using architectural performance counters is subject to a time window of performance requested by an operating system.