公开(公告)号：US11182186B2

公开(公告)日：2021-11-23

申请号：US15663499

申请日：2017-07-28

Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

Inventor： Anthony Asaro ,  Yinan Jiang ,  Andy Sung ,  Ahmed M. Abdelkhalek ,  Xiaowei Wang ,  Sidney D. Fortes

IPC: G06F9/46 ,  G06F9/455 ,  G06F9/48

Abstract: A technique for recovering from a hang in a virtualized accelerated processing device (“APD”) is provided. In the virtualization scheme, different virtual machines are assigned different “time-slices” in which to use the APD. When a time-slice expires, the APD stops operations for a current VM and starts operations for another VM. To stop operations on the APD, a virtualization scheduler sends a request to idle the APD. The APD responds by completing work and idling. If one or more portions of the APD do not complete this idling process before a timeout expires, then a hang occurs. In response to the hang, the virtualization scheduler informs the hypervisor that a hang has occurred. The hypervisor performs a function level reset on the APD and informs the VM that the hang has occurred. The VM responds by stopping command issue to the APD and re-initializing the APD for the function.

公开(公告)号：US20190335189A1

公开(公告)日：2019-10-31

申请号：US15965281

申请日：2018-04-27

Applicant: ATI Technologies ULC

Inventor： Ahmed M. Abdelkhalek ,  Edward A. Harold ,  Andy Sung ,  Stephen Ho ,  Lei Zhang ,  Ihab Amer ,  Gabor Sines ,  Zhiqi Hao ,  Yang Liu ,  Baochun Li ,  Kai Sun

IPC: H04N19/463 ,  H04N19/152 ,  H04N19/593

Abstract: Systems, apparatuses, and methods for reducing latency when consuming an encoded video bitstream in real-time are disclosed. A video encoder encodes a video bitstream and writes chunks of the encoded bitstream to a bitstream buffer. Prior to the encoder completing the encoding of an entire frame, or an entire slice of a frame, a consumer module consumes encoded chunks of the bitstream. In one implementation, to enable pipelining of the consumption with the encoding, the encoder updates a buffer write pointer with an indication of the amount of data that has been written to the bitstream buffer. The consumer module retrieves encoded data from the bitstream buffer up to the location indicated by the buffer write pointer. In this way, the consumer module is able to access and consume encoded video data prior to the encoder finishing encoding an entire frame or an entire slice of the frame.

公开(公告)号：US20190018699A1

公开(公告)日：2019-01-17

申请号：US15663499

申请日：2017-07-28

Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

Inventor： Anthony Asaro ,  Yinan Jiang ,  Andy Sung ,  Ahmed M. Abdelkhalek ,  Xiaowei Wang ,  Sidney D. Fortes

IPC: G06F9/455 ,  G06F9/48

Abstract: A technique for recovering from a hang in a virtualized accelerated processing device (“APD”) is provided. In the virtualization scheme, different virtual machines are assigned different “time-slices” in which to use the APD. When a time-slice expires, the APD stops operations for a current VM and starts operations for another VM. To stop operations on the APD, a virtualization scheduler sends a request to idle the APD. The APD responds by completing work and idling. If one or more portions of the APD do not complete this idling process before a timeout expires, then a hang occurs. In response to the hang, the virtualization scheduler informs the hypervisor that a hang has occurred. The hypervisor performs a function level reset on the APD and informs the VM that the hang has occurred. The VM responds by stopping command issue to the APD and re-initializing the APD for the function.

公开(公告)号：US12301789B2

公开(公告)日：2025-05-13

申请号：US17560533

申请日：2021-12-23

Applicant: ATI Technologies ULC

Inventor： Ahmed M. Abdelkhalek ,  Ihab M. A. Amer ,  Khaled Mammou

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172

Abstract: Disclosed herein is a region-based reference management system using in video frame encoding. Source content, such as video game streaming or remote desktop sharing, that includes scene changes or significant instantaneous changes in a region from one frame to the next can present encoding challenges. Techniques disclosed herein use hints about changes in regional frame content, dissect frame content into regions, and associate the dissected regions with stored reference frame data using the hints and information about the regions to more efficiently encode frames.

公开(公告)号：US12169729B2

公开(公告)日：2024-12-17

申请号：US17453341

申请日：2021-11-02

Applicant: ATI Technologies ULC

Inventor： Yinan Jiang ,  Ahmed M. Abdelkhalek ,  Guopei Qiao ,  Andy Sung ,  Haibo Liu ,  Dezhi Ming ,  Zhidong Xu

IPC: G06F9/455 ,  G06F9/22 ,  G06F9/48

Abstract: A technique for varying firmware for different virtual functions in a virtualized device is provided. The virtualized device includes a hardware accelerator and a microcontroller that executes firmware. The virtualized device is virtualized in that the virtualized device performs work for different virtual functions (with different virtual functions associated with different virtual machines), each function getting a “time-slice” during which work is performed for that function. To vary the firmware, each time the virtualized device switches from performing work for a current virtual function to work for a subsequent virtual function, one or more microcontrollers of the virtualized device examines memory storing addresses for firmware for the subsequent virtual function and begins executing the firmware for that subsequent virtual function. The addresses for the firmware are provided by a corresponding virtual machine at configuration time.

公开(公告)号：US11768696B2

公开(公告)日：2023-09-26

申请号：US17121678

申请日：2020-12-14

Applicant: ATI Technologies ULC

Inventor： Yinan Jiang ,  Kamraan Nasim ,  Dezhi Ming ,  Ahmed M. Abdelkhalek ,  Dmytro Chenchykov ,  Andy Sung

IPC: G06F9/455 ,  G06F9/48

CPC classification number: G06F9/45558 ,  G06F9/45545 ,  G06F9/4812 ,  G06F2009/45591 ,  G06F2009/45595

Abstract: A technique for managing access to a micro engine, the method comprising: determining that a virtual function “VF”) is to be given access to direct communication with a micro engine; in response to the determining, configuring the micro engine to accept direct communication from the VF; monitoring for unpermitted communication; and after a time period has expired, configuring the micro engine to no longer accept direct communication from the VF.

公开(公告)号：US20200177876A1

公开(公告)日：2020-06-04

申请号：US16209308

申请日：2018-12-04

Applicant: ATI Technologies ULC

Inventor： Ahmed M. Abdelkhalek ,  Ihab M. A. Amer ,  Khaled Mammou

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/14 ,  H04N19/172

Abstract: Disclosed herein is a region-based reference management system using in video frame encoding. Source content, such as video game streaming or remote desktop sharing, that includes scene changes or significant instantaneous changes in a region from one frame to the next can present encoding challenges. Techniques disclosed herein use hints about changes in regional frame content, dissect frame content into regions, and associate the dissected regions with stored reference frame data using the hints and information about the regions to more efficiently encode frames.

公开(公告)号：US20240211309A1

公开(公告)日：2024-06-27

申请号：US18085902

申请日：2022-12-21

Applicant: ATI TECHNOLOGIES ULC ,  ADVANCED MICRO DEVICES, INC.

Inventor： Ahmed M. Abdelkhalek ,  Rutao Zhang ,  Min Zhang ,  Yinan Jiang ,  Jeffrey G. Cheng ,  Yuping Shen ,  Mikhail Mironov

IPC: G06F9/48 ,  G06F9/455

CPC classification number: G06F9/4887 ,  G06F9/45558 ,  G06F2009/4557

Abstract: A parallel processor is configured to enforce job limits for virtual functions to facilitate an expected quality of service for each of the virtual functions assigned to a virtual machine executing at the processing unit. A scheduler schedules well-behaving virtual functions prior to badly-behaving virtual functions to prevent badly-behaving virtual functions from consuming a disproportionate share of hardware resources, thereby mitigating an impact of the badly-behaving virtual functions on the quality of service of the well-behaving virtual functions.

公开(公告)号：US20240184623A1

公开(公告)日：2024-06-06

申请号：US18072818

申请日：2022-12-01

Applicant: ATI TECHNOLOGIES ULC

Inventor： Ahmed M. Abdelkhalek ,  Rutao Zhang ,  Bokun Zhang ,  Min Zhang ,  Yinan Jiang ,  Jeffrey G. Cheng

IPC: G06F9/48 ,  G06F9/54

CPC classification number: G06F9/4881 ,  G06F9/54

Abstract: 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.

公开(公告)号：US11212520B2

公开(公告)日：2021-12-28

申请号：US16209308

申请日：2018-12-04

Applicant: ATI Technologies ULC

Inventor： Ahmed M. Abdelkhalek ,  Ihab M. A. Amer ,  Khaled Mammou

IPC: H04N19/105 ,  H04N19/172 ,  H04N19/14 ,  H04N19/119

Abstract: Disclosed herein is a region-based reference management system using in video frame encoding. Source content, such as video game streaming or remote desktop sharing, that includes scene changes or significant instantaneous changes in a region from one frame to the next can present encoding challenges. Techniques disclosed herein use hints about changes in regional frame content, dissect frame content into regions, and associate the dissected regions with stored reference frame data using the hints and information about the regions to more efficiently encode frames.