公开(公告)号：US11243904B2

公开(公告)日：2022-02-08

申请号：US16813336

申请日：2020-03-09

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Robert A. Gottlieb ,  Christopher L. Reeve ,  Michael John Bedy

IPC: G06F15/80

Abstract: A method and apparatus for scheduling instructions of a shader program for a graphics processing unit (GPU) with a fixed number of registers. The method and apparatus include computing, via a processing unit (PU), a liveness-based register usage across all basic blocks in the shader program, computing, via the PU, the range of numbers of waves of a plurality of registers for the shader program, assessing the impact of available post-register allocation optimizations, computing, via the PU, the scoring data based on number of waves of the plurality of registers, and computing, via the PU, the number of waves for execution for the plurality of registers.

公开(公告)号：US11243799B2

公开(公告)日：2022-02-08

申请号：US16556521

申请日：2019-08-30

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Alexander Fuad Ashkar ,  Hans Fernlund

IPC: G06F9/455 ,  G06F9/38

Abstract: An apparatus includes a plurality of virtual machines, a hypervisor coupled to the plurality of virtual machines, and a graphical processing unit (GPU) coupled to the hypervisor. The plurality of virtual machines are allocated a plurality of time slices. The hypervisor initiates a world switch to a first virtual machine of the plurality of virtual machines. The GPU makes a determination as to whether to adjust the time slice associated with the first virtual machine based on an assessment of time slice adjustment parameters related to an execution time of at least one of the plurality of virtual machines.

公开(公告)号：US11243752B2

公开(公告)日：2022-02-08

申请号：US16509165

申请日：2019-07-11

Applicant: Advanced Micro Devices, Inc.

Inventor： Sumesh Udayakumaran

IPC: G06F15/00 ,  G06F8/41 ,  G06T15/06 ,  G06T15/00 ,  G06F8/71

Abstract: Described herein are techniques for generating a stitched shader program. The techniques include identifying a set of shader programs to include in the stitched shader program, wherein the set includes at least one multiversion shader program that includes a first version of instructions and a second version of instructions, wherein the first version of instructions uses a first number of resources that is different than a second number of resources used by the second version of instructions. The techniques also include combining the set of shader programs to form the stitched shader program. The techniques further include determining a number of resources for the stitched shader program. The techniques also include based on the determined number of resources, modifying the instructions corresponding to the multiversion shader program to, when executed, execute either the first version of instructions, or the second version of instructions.

公开(公告)号：US20220038102A1

公开(公告)日：2022-02-03

申请号：US17502741

申请日：2021-10-15

Applicant: Advanced Micro Devices, Inc.

Inventor： Achal Kathuria ,  Pradeep Jayaraman

IPC: H03K21/08 ,  H03K5/24 ,  H03K19/01

Abstract: Systems, apparatuses, and methods for conveying and receiving information as electrical signals in a computing system are disclosed. A computing system includes multiple transmitters sending singled-ended data signals to multiple receivers. A termination voltage is generated and sent to the multiple receivers. The termination voltage is coupled to each of signal termination circuitry and signal sampling circuitry within each of the multiple receivers. Any change in the termination voltage affects the termination circuitry and affects comparisons performed by the sampling circuitry. Received signals are reconstructed at the receivers using the received signals, the signal termination circuitry and the signal sampling circuitry.

公开(公告)号：US20220035765A1

公开(公告)日：2022-02-03

申请号：US17503959

申请日：2021-10-18

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

Inventor： Gordon Caruk ,  Gerald R. Talbot

IPC: G06F13/42 ,  G06F13/12 ,  G06F13/40

Abstract: An interconnect controller for a data processing platform includes a data link layer controller for selectively receiving data packets from and sending data packets to a higher protocol layer, and a physical layer controller coupled to the data link layer controller and adapted to be coupled to a communication link. The physical layer controller operates according to a predetermined protocol selectively at one of a plurality of enhanced speeds that are not specified by any published standard and are separated from each other by the same predetermined amount. In response to performing a link initialization, the interconnect controller performs at least one setup operation to select a speed, and subsequently operates the communication link using a selected speed.

公开(公告)号：US11237827B2

公开(公告)日：2022-02-01

申请号：US16696108

申请日：2019-11-26

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Bin He ,  Jiasheng Chen ,  Jian Huang

IPC: G06F12/02 ,  G06F9/30 ,  G06F7/57 ,  G06F9/48

Abstract: A graphics processing unit (GPU) sequences provision of operands to a set of operand registers, thereby allowing the GPU to share at least one of the operand registers between processing. The GPU includes a plurality of arithmetic logic units (ALUs) with at least one of the ALUs configured to perform double precision operations. The GPU further includes a set of operand registers configured to store single precision operands. For a plurality of executing threads that request double precision operations, the GPU stores the corresponding operands at the operand registers. Over a plurality of execution cycles, the GPU sequences transfer of operands from the set of operand registers to a designated double precision operand register. During each execution cycle, the double-precision ALU executes a double precision operation using the operand stored at the double precision operand register.

公开(公告)号：US20220029954A1

公开(公告)日：2022-01-27

申请号：US17496256

申请日：2021-10-07

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： David A. Roberts

IPC: H04L29/12 ,  H04L12/741 ,  H04L12/753 ,  H04L29/06

Abstract: A controller assigns variable length addresses to addressable elements that are connected to a network. The variable length addresses are determined based on probabilities that packets are addressed to the corresponding addressable element. The controller transmits, to the addressable elements via the network, a routing table indicating the variable length addresses assigned to the addressable elements. Routers or addressable elements receive the routing table and route one or more packets over the network to an addressable element using variable length addresses included in a header of the one or more packets.

公开(公告)号：US20210406209A1

公开(公告)日：2021-12-30

申请号：US17032195

申请日：2020-09-25

Applicant: Advanced Micro Devices, Inc.

Inventor： Abhinav Vishnu ,  Joseph Lee Greathouse

IPC: G06F13/28

Abstract: Systems, apparatuses, and methods for performing an allreduce operation on an enhanced direct memory access (DMA) engine are disclosed. A system implements a machine learning application which includes a first kernel and a second kernel. The first kernel corresponds to a first portion of a machine learning model while the second kernel corresponds to a second portion of the machine learning model. The first kernel is invoked on a plurality of compute units and the second kernel is converted into commands executable by an enhanced DMA engine to perform a collective communication operation. The first kernel is executed on the plurality of compute units in parallel with the enhanced DMA engine executing the commands for performing the collective communication operation. As a result, the allreduce operation may be executed in parallel on the enhanced DMA engine to the compute units.

公开(公告)号：US20210406183A1

公开(公告)日：2021-12-30

申请号：US16927786

申请日：2020-07-13

Applicant: Advanced Micro Devices, Inc.

Inventor： Susumu Mashimo ,  John Kalamatianos

IPC: G06F12/0862 ,  G06F12/0877 ,  G06F9/30 ,  G06K9/62

Abstract: A method includes recording a first set of consecutive memory access deltas, where each of the consecutive memory access deltas represents a difference between two memory addresses accessed by an application, updating values in a prefetch training table based on the first set of memory access deltas, and predicting one or more memory addresses for prefetching responsive to a second set of consecutive memory access deltas and based on values in the prefetch training table.

公开(公告)号：US11209899B2

公开(公告)日：2021-12-28

申请号：US15807483

申请日：2017-11-08

Applicant: Advanced Micro Devices, Inc.

Inventor： Michael A. Evans ,  Nathaniel David Naegle

IPC: G06F3/01 ,  G02B27/01 ,  H04N13/133 ,  H04N13/344 ,  G09G5/00 ,  H04N13/383

Abstract: A technique for adjusting the brightness values of images to be displayed on a stereoscopic head mounted display is provided herein. This technique improves the perceived dynamic range of the head mounted display by dynamically adjusting the pixel intensities (also known generally as “exposure”) of the images presented on the head mounted display based on a detected gaze direction. The head mounted display includes an eye tracker that is able to sense the gaze directions of the eyes. The eye tracker, head mounted display, or a processor of a computer system receives this information, determines an intersection point of the eye gaze and a screen within the head mounted display and identifies a gaze area around this intersection point. Using this gaze area, the processing system adjusts the pixel intensities of an image displayed on the screen based on the intensities of the pixels within the gaze area.