Intel Corporation

Joseph R Doucette

Krishnakanth Venkata Sistla

Avinash N Ananthakrishnan

Martin Rowland

Min Huang

Stephen H Gunther

Ankush Varma

Jeremy J Shrall

Vivek Garg

Kai Cheng

Eric J DeHaemer

Viktor D Vogman

Baskaran Ganesan

Brian J Griffith

Chris Poirier

William Johnson Bowhill

Zhiguo Wang

Eric Dehaemer

Cesar A Quiroz

Vinod Ambrose

Gopikrishna Jandhyala

Celeste M Brown

Harjinder Hullon

Seow Fung Ooi

Yin-Lung Lu

In an embodiment, a processor includes a plurality of cores grouped into a plurality of clusters. The clusters are formed based on a corresponding operating voltage of each core at each of a plurality of frequencies. Each cluster includes a unique set of cores and at least one cluster includes at least two of the cores. The processor also includes a power control unit (PCU) including frequency/voltage control logic, responsive to a frequency change request for a first core of a first cluster, to determine an operating voltage for the first core from a first cluster voltage-frequency (V-F) table associated with the first cluster. The first cluster V-F table uniquely specifies a corresponding operating voltage at each of a plurality of frequencies of operation of the cores of the first cluster. Other embodiments are described and claimed.

Apparatus and method to implement power management of a processor

In an embodiment, a processor includes a plurality of cores each to independently execute instructions, a plurality of graphics engines each to independently perform graphics operations; and, a power control unit coupled to the plurality of cores to control power consumption of the processor, where the power control unit includes a power excursion control logic to limit a power consumption level of the processor from being above a defined power limit for more than a duty cycle portion of an operating period. Other embodiments are described and claimed.

Enforcing a power consumption duty cycle in a processor

An apparatus, method and system is described herein for dynamic power control of a power domain. A power limit over a time window is provided. And over a control loop period a power interface determines energy consumption of the power domain, intelligently budgets power among devices within the power domain based on the energy consumption, converts those budgets to performance maximums for the power domain, and limits performance of devices in the power domain to the performance maximums utilizing a running average power limit.

Method, apparatus, and system for energy efficiency and energy conservation including dynamic control of energy consumption in power domains

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Waltham, MA, United States of America

Joseph R Doucette