Ati Technologies Ulc

Advanced Micro Devices Corporation

Qualcomm Incorporated

Ati Technologies Inc.

Ati International Srl

Oleksandr Khodorkovsky

Stephen David Presant

Indrani Paul

Vladimir F Giemborek

Leonardo De Paula Rosa Piga

Alexander S Duenas

Karthik Rao

Sriram Sambamurthy

Dana Glenn Lewis

Wonje Choi

Omer Irshad

Andrzej S Mamona

Arpit Nitinbhai Patel

Donny Yi

Sishanthy Balachandran

Andrew Savio D'Souza

Alexander J Branover

Ljubisa Bajic

Paul Blinzer

David A Gotwalt

Gia Tung Phan

Phil Mummah

Erwin Pang

Ali Ibrahim

Ara Kulidjian

Min Zhang

John Bruno

Korhan Erenben

Leonard Martin Berk

Mahendra Persaud

Gia Phan

An apparatus includes a processor, a sleep state duration prediction module, and a system management unit. The sleep state duration prediction module is configured to predict a sleep state duration for component of the processing device. The system management unit is to transition the component into a sleep state selected from a plurality of sleep states based on a comparison of the predicted sleep state duration to at least one duration threshold. Each sleep state of the plurality of sleep states is a lower power state than a previous sleep state of the plurality of sleep states.

Low power state selection based on idle duration history

Power management in a computing device. A driver is registered with an operating system (OS) executing on the computing device to receive information about a position of a user interface control. If the user interface control is moved, the driver receives a notification of the user interface control position and determines a power management intervention based on the position The driver transmits the power management intervention to power control circuitry which sets a power setting of the computing device based on the intervention.

Performance and power tuning user interface

A method and apparatus controls power management of a graphics processing core when multiple virtual machines are allocated to the graphics processing core on a much finer-grain level than conventional systems. In one example, the method and apparatus processes a plurality of virtual machine power control setting requests to determine a power control request for a power management unit of a graphics processing core. The method and apparatus then controls power levels of the graphics processing core with the power management unit based on the determined power control request.

Method and apparatus for power management of a graphics processing core in a virtual environment

Power management in a computing device. A driver is registered with an operating system (OS) executing on the computing device to receive information about a position of a user interface control. If the user interface control is moved, the driver receives a notification of the user interface control position and determines a power management intervention based on the position. The driver transmits the power management intervention to power control circuitry which sets a power setting of the computing device based on the intervention.

A method and apparatus includes a multi-processor apparatus including a plurality of integrated circuit processors having a shared thermal platform. Each processor has at least one subsystem operable at a plurality of different power settings, at least one internal thermal parameter detector providing power data related to the processor, and a power management unit. The method and apparatus illustratively shares power data from the at least one internal thermal parameter detector of each processor between the power management units of the plurality of processors; compares the shared power data from the plurality of processors to a thermal design power limit for the shared thermal platform; and controls a power setting of the at least one subsystem of the plurality of processors within the shared thermal platform based on the comparison of the shared power data to the thermal design power limit for the shared thermal platform.

Apparatus and method for managing power among a plurality of processors sharing a thermal platform

A method of operating a processing device is provided. The method includes, responsive to an idle state of the processing device, transitioning the processing device to a substantially disabled state. The processing device, for example, may be a graphics processing unit (GPU). Transitioning the processing device to a substantially disabled state upon detection of an idle state may result in power savings. Corresponding systems and computer program products are also provided.

Controlling the power state of an idle processing device

A method and apparatus determines an activity history context for each of a plurality of virtual machines sharing use of a graphics processing core. Each activity history context provides information related to a power setting of at least one engine of the graphics processing core during at least one prior use of the graphics processing core by the corresponding virtual machine. The method and apparatus controls a power setting of the at least one engine of the graphics processing core based on the activity history context corresponding to an active virtual machine using the graphics processing core.

Method and apparatus for power management of a processor in a virtual environment

A method of power management is provided. The method includes detecting an event, assign a first responsibility to a first graphics processing unit (GPU) and a second responsibility to second GPU, and changing a power state of the first and second GPUs based on the first and second responsibilities, respectively. The first responsibility is different from the second responsibility.

Power management in multi-GPU systems

A method and apparatus utilizes a three dimensional rendering engine to rotate an image based on user selected or otherwise determined screen orientation. A vertex coordinate transformation is defined for a rotated destination image. The source image is used as a texture for texture mapping during rendering operation to produce rotated image. In one embodiment, a separate set of software instructions is used for each orientation mode. Accordingly, a non-pixel by pixel based 3D rotation may be carried out using a 3D rendering engine to avoid a single parameter based seriatim pixel by pixel based orientation.

Method and apparatus for rotating an image on a display

A method of operating a device is provided. The method includes transitioning the GPU to a substantially disabled state in response to a first received signal, and generating, while the GPU is in the substantially disabled state, a response signal in response to a second received signal. The response signal is substantially similar to a second response signal that would be generated by the GPU in a powered state in response to the second received signal.

Method and apparatus for responding to signals from a disabling device while in a disabled state

A method of managing resources is provided. The method includes identifying a resource associated with a processor responsive to an impending transition, and copying the identified resource from a memory associated with the GPU or to the memory associated with the GPU.

Managing resources to facilitate altering the number of active processors

In devices in which display data is read from a memory for display, display underflow in a processing block is alleviated by controlling a clock frequency driving the processing block. Stages of the processing block send underflow detection signals to underflow prevention logic. The underflow prevention logic controls the frequencies of clock signals generated by a clock generator to alleviate the underflow condition.

Display underflow prevention

A variable clock control information generator receives graphics engine activity data relating to the operating level of a graphics engine, and memory activity data relating to an activity level of memory. In response, the variable clock control information generator produces graphics engine clock control information and memory clock control information with respect to each other, such that a relative difference between the graphics engine activity data and the memory activity data is within balance threshold data. Accordingly, the variable clock control information generator adapts to the varying levels of graphics engine activity and memory activity and adjusts the frequency of the graphics engine clock signal and the frequency of the memory clock signal to achieve a balanced relative activity level.

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Toronto, Canada

Oleksandr Khodorkovsky