Ati Technologies Ulc

Advanced Micro Devices Corporation

Min Zhang

Bokun Zhang

Paul Blinzer

Oleksandr Khodorkovsky

Yinan Jiang

Jeffrey Gongxian Cheng

Ahmed M Abdelkhalek

Yuping Shen

Jun Lei

Patrick Pak Kin Fok

Wei Liang

Aric Cyr

Hing Pong Chan

Korhan Erenben

Yuexiang Yu

Wan Quan Li

Panagiotis Vagiakos

Leonard Martin Berk

Rutao Zhang

Systems and methods are provided related to a scheduler to receive a job request from a virtual function associated with a tenant for execution by at least one processing unit. The scheduler validates the job request in accordance with one or more defined restrictions associated with the tenant and, responsive to successful validation, provides the job request for execution by the processing unit via one or more physical functions associated with the processing unit. In certain embodiments, multi-level enforcement of the defined restrictions are provided via user-mode and kernel-mode drivers associated with the virtual function that are also enabled to validate job requests based on the defined restrictions.

Job limit enforcement for improved multitenant quality of service

A technique for operating an auxiliary processing device is provided. The technique includes based on a first request specifying a handle received from a client, requesting work be performed via a first auxiliary processing device mapped to the handle; responsive to restoration from hibernation, updating a mapping for the handle to refer to a second auxiliary processing device; and based on a second request specifying the handle received from the client, requesting work be performed via the second auxiliary processing device.

Continuity of service for virtualized device after resumption from hibernation

In a cloud gaming system or other remote video streaming system, a client device and a server coordinate to introduce an adjustable delay in the frame start timing in the frame rendering pipeline at the server to reducing vertical synchronization (VSYNC) presentation latency, and thus reduce overall frame latency. In implementations, the coordination between the client device and the server includes the client device observing the current VSYNC presentation latencies in recently processed video frames reporting this observed VSYNC presentation latency to the server. The server uses this feedback to determine a frame start delay that is then used to introduce a frame start shift for an upcoming frame and subsequent frames, thereby shifting the server rendering and encoding pipeline back so that the resulting video frames are made available to present at the client device closer to their respective VSYNC signal assertions.

Server-side frame render timing delay to reduce client-side frame present delay

Described herein are techniques for removing control of a display from an operating system. The disclosed techniques decouple operation of the physical display device from control of the operating system so that the display device may be powered down while not needed during streaming. The device driver for the graphics card, into which a display device cable is plugged, simulates operation of the display but allows the display to be powered down. Simulating the display involves properly responding to queries or commands from the operating system, and generating the signals that would be expected from the display device by the operating system. While simulated in this manner, whether the display device is actually powered down does not matter to the operation of an application being streamed, because the operating system still 'believes' the display device is powered on. Thus application streaming is not interrupted by powering down the display device.

Techniques for seamless transition between host display and remote display

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

Growing community of inventors

Richmond Hill, Canada

Min Zhang