Intel Corporation

Adwait Purandare

Ankush Varma

Alexander Gendler

Krishnakanth Venkata Sistla

Vivek Garg

Stephen T Palermo

Lokpraveen B Mosur

Srihari Makineni

Neelam Chandwani

Udayan Mukherjee

Nazar Syed Haider

Ariel Szapiro

Jianwei Dai

Suresh Chemudupati

Eric Dehaemer

Rany T Elsayed

Shubha Bommalingaiahnapallya

David Pawlowski

Efraim Rotem

Eliezer Weissmann

Andrew J Herdrich

Nadav Shulman

Nir Rosenzweig

Dean A Mulla

Vasudevan Srinivasan

Nikhil Gupta

David Hunt

Ripan Das

Yogesh Bansal

Nimrod Angel

Ido Melamed

Elkana Korem

Arye Albahari

Aman Sewani

Rupal Parikh

Nir Misgav

Nilanjan Palit

Ujjwal Gupta

Amit Gabai

Pavithra Sampath

Daniela Kaufman

Nikethan Shivanand Baligar

Stanley Chen

Stephen Paul Haake

Timothy Yee-Kwong Kam

Shlomo Attias

Gilad Bomstein

Michael Tulanowski

Phani Kumar Kandula

Shruthi Venugopal

Dorit Shapira

Stephen Wang

Ofer Nathan

Christopher M Macnamara

Pritesh P Shah

A hardware controller within a core of a processor is described. The hardware controller includes telemetry logic to generate telemetry data that indicates an activity state of the core; core stall detection logic to determine, based on the telemetry data from the telemetry logic, whether the core is in an idle loop state; and a power controller that, in response to the core stall detection logic determining that the core is in the idle loop state, is to decrease a power mode of the core from a first power mode associated with a first set of power settings to a second power mode associated with a second set of power settings.

Hardware-assisted core frequency and voltage scaling in a poll mode idle loop

Methods for frequency scaling for per-core accelerator assignments and associated apparatus. A processor includes a CPU (central processing unit) having multiple cores that can be selectively configured to support frequency scaling and instruction extensions. Under this approach, some cores can be configured to support a selective set of AVX instructions (such as AVX3/5G-ISA instructions) and/or AMX instructions, while other cores are configured to not support these AVX/AMX instructions. In one aspect, the selective AVX/AMX instructions are implemented in one or more ISA extension units that are separate from the main processor core (or otherwise comprises a separate block of circuitry in a processor core) that can be selectively enabled or disabled. This enables cores having the separate unit(s) disabled to consume less power and/or operate at higher frequencies, while supporting the selective AVX/AMX instructions using other cores. These capabilities enhance performance and provides flexibility to handle a variety of applications requiring use of advanced AVX/AMX instructions to support accelerated workloads.

Frequency scaling for per-core accelerator assignments

An adaptive or dynamic power virus control scheme (hardware and/or software) that dynamically adjusts maximum dynamic capacitance (CdynMax) and corresponding maximum frequency (P0nMax) setting per application executed on a processor core. A power management unit monitors telemetry such as a number of throttled cycles due to CdynMax threshold excursions cycles for the processor core and a cost of average cycle Cdyn cost for the processor core. As the number of throttling cycles increases for the processor core, the aCode firmware of the power management unit decides to increase the Cdyn level or threshold for that core (e.g., to make the threshold less aggressive). As the average Cdyn cost over a number of cycles becomes lower than a threshold, aCode adjusts the threshold to a lower threshold (e.g., more aggressive threshold) and lower Cdyn.

Apparatus and method to detect power supply security attack and risk mitigation

Hierarchical Power Management (HPM) architecture considers the limits of scaling on a power management controller, the autonomy at each die, and provides a unified view of the package to a platform. At a simplest level, HPM architecture has a supervisor and one or more supervisee power management units (PMUs) that communicate via at least two different communication fabrics. Each PMU can behave as a supervisor for a number of supervisee PMUs in a particular domain. HPM addresses these needs for products that comprise a collection of dice with varying levels of power and thermal management capabilities and needs. HPM serves as a unified mechanism than can span collection of dice of varying capability and function, which together form a traditional system-on-chip (SoC). HPM provides a basis for managing power and thermals across a diverse set of dice.

Hierarchical power management apparatus and method

In one embodiment, a processor includes a plurality of intellectual property (IP) circuits, each to execute instructions and including a local control circuit to enable the IP circuit to operate at a level above a local current budget for the IP circuit, unless the processor is undergoing a global violation. The processor may further include a power controller coupled to the plurality of IP circuits. The power controller may include a control circuit to receive request information from the plurality of IP circuits and, based at least in part on the request information, determine that the processor is undergoing the global violation when a global current budget is exceeded. Other embodiments are described and claimed.

System, apparatus and method for globally aware reactive local power control in a processor

A local power control arbiter is provided to interface with a global power control unit of a processing platform having a plurality of processing entities. The local power control arbiter controls a local processing unit of the processing platform. The local power arbiter has an interface to receive from the global power control unit, a local performance limit allocated to the local processing unit depending on a global power control evaluation and processing circuitry to determine any change to one or more processing conditions prevailing in the local processing unit on a timescale shorter than a duration for which the local performance limit is applied to the local processing unit by the global power control unit and to select a performance level for the local processing unit depending on both the local performance limit and the determined change, if any, to the prevailing processing conditions on the local processing unit.

Power control arbitration

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Hillsboro, OR, United States of America

Adwait Purandare