Patents Assigned to Advanced Micro Devices
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Publication number: 20230205252Abstract: Methods and systems are disclosed for clock delay compensation in a multiple chiplet system. Techniques disclosed include distributing, by a clock generator, a clock signal across distribution trees of respective chiplets; measuring phases, by phase detectors, where each phase measurement is associated with a chiplet of the chiplets and is indicative of a propagation speed of the clock signal through the distribution tree of the chiplet. Then, for each chiplet, techniques are further disclosed that determine, by a microcontroller, based on the phase measurements associated with the chiplet, a delay offset, and that delay, based on the delay offset, the propagation of the clock signal through the distribution tree of the chiplet using a delay unit associated with the chiplet.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Anwar Kashem, Craig Daniel Eaton, Pouya Najafi Ashtiani, Deepesh John
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Publication number: 20230206973Abstract: Methods and systems are disclosed for calibrating, by a memory interface system, an interface with dynamic random-access memory (DRAM) using a dynamically changing training clock. Techniques disclosed comprise receiving a system clock having a clock signal at a first pulse rate. Then, during the training of the interface, techniques disclosed comprise generating a training clock from the clock signal at the first pulse rate, the training clock having a clock signal at a second pulse rate, and sending, based on the generated training clock, command signals, including address data, to the DRAM.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Anwar Kashem, Craig Daniel Eaton, Pouya Najafi Ashtiani
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Publication number: 20230205420Abstract: A technique for operating a memory system is disclosed. The technique includes performing a first request, by a first memory client, to access data at a first memory address, wherein the first memory address refers to data in a first memory section that is coupled to the first memory client via a direct memory connection; servicing the first request via the direct memory connection; performing a second request, by the first client, to access data at a second memory address, wherein the second memory address refers to data in a second memory section that is coupled to the first client via a cross connection; and servicing the second request via the cross connection.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Vidyashankar Viswanathan, Richard E. George, Michael Y. Chow
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Publication number: 20230205608Abstract: A disclosed technique includes executing, for a first wavefront, a barrier arrival notification instruction, for a first barrier, indicating arrival at a first barrier point; performing, for the first wavefront, work prior to the first barrier point; executing, for the first wavefront, a barrier check instruction; and executing, for the first wavefront, at a control flow path based on a result of the barrier check instruction.Type: ApplicationFiled: December 27, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Brian Emberling, Joseph L. Greathouse
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Publication number: 20230206395Abstract: A technique for performing convolution operations is disclosed. The technique includes performing a first convolution operation based on a first convolutional layer input image to generate at least a portion of a first convolutional layer output image; while performing the first convolution operation, performing a second convolution operation based on a second convolutional layer input image to generate at least a portion of a second convolutional layer output image, wherein the second convolutional layer input image is based on the first convolutional layer output image; storing the portion of the first convolutional layer output image in a first memory dedicated to storing image data for convolution operations; and storing the portion of the second convolutional layer output image in a second memory dedicated to storing image data for convolution operations.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Michael Y. Chow, Vidyashankar Viswanathan, Richard E. George
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Publication number: 20230205435Abstract: A phase training update circuit operates during a self-refresh cycle of a memory to perform a phase training update on individual bit lanes. The phase training update circuit adjusts a bit lane transmit phase offset forward a designated number of phase steps, transmits a training pattern, and determines a first number of errors in the transmission. It also adjusts the bit lane transmit phase offset backward the designated number of phase steps, transmits the training pattern, and determines a second number of errors in the transmission. Responsive to a difference between the first number of errors and the second number of errors, the phase training update circuits adjusts a center phase position for the bit lane transmit phase offset of the selected bit lane.Type: ApplicationFiled: December 23, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Scott P. Murphy, Huuhau M. Do
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Publication number: 20230207038Abstract: Methods and systems are disclosed for training, by a sequencer of a memory interface system, an interface with DRAM. Techniques disclosed comprise scheduling a command sequence, including DRAM commands that are interleaved with one or more CSR commands; executing the scheduled command sequence, wherein the DRAM commands are sent to the DRAM through an internal datapath of the system and the CSR commands are sent to the internal datapath; and training the interface based on exchange of data, carried out by the DRAM commands, including adjustments to an operational parameter associated with the interface.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Anwar Kashem, Craig Daniel Eaton, Pouya Najafi Ashtiani
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Publication number: 20230206541Abstract: A technique for performing ray tracing operations is provided. The technique includes traversing through a bounding volume hierarchy to an instance node; performing an instance node transform using common circuitry; traversing to a leaf node of the bounding volume hierarchy; and performing an intersection test for the leaf node using the common circuitry.Type: ApplicationFiled: December 28, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Skyler Jonathon Saleh, Fataneh F. Ghodrat, Jeffrey Christopher Allan
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Publication number: 20230205539Abstract: Devices, methods and systems for managing resources in a computing device. Information regarding resource usage is captured. A prediction is generated, based on the information, that resource usage by a processor will exceed a threshold during an upcoming time. An operating parameter of the processor is adjusted, based on the prediction. In some implementations, information regarding memory bandwidth is captured. A prediction is generated, based on the information, that a memory region stored in a first memory device will be addressed by a memory intensive instruction during an upcoming time period. Data stored in the memory region is moved to a second memory device, based on the prediction.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Sergey Blagodurov, Masab Ahmad
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Publication number: 20230206368Abstract: A technique for operating a processing device is disclosed. The method includes configuring at least one switch to interconnect one or more selected IP to the processing device, receiving an activation signal associated with the at least one switch based on the one or more selected IP, in response to the activation signal, causing the at least one switch to disable connection to the one or more selected IP, and verifying access to the one or more selected IP is disabled.Type: ApplicationFiled: December 29, 2021Publication date: June 29, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Vidyashankar Viswanathan, Richard E. George, Michael Y. Chow
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Patent number: 11687456Abstract: An electronic device that handles memory accesses includes a memory and a processor that supports a plurality of streams. The processor acquires a graph that includes paths of operations in a set of operations for processing instances of data through a model, each path of operations including a separate sequence of operations from the set of operations that is to be executed using a respective stream from among the plurality of streams. The processor then identifies concurrent paths in the graph, the concurrent paths being paths of operations between split points at which two or more paths of operations diverge and merge points at which the two or more paths of operations merge. The processor next executes operations in each of the concurrent paths using a respective stream, the executing including using memory coloring for handling memory accesses in the memory for the operations in each concurrent path.Type: GrantFiled: December 21, 2021Date of Patent: June 27, 2023Assignee: Advanced Micro Devices, Inc.Inventor: Mei Ye
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Patent number: 11687281Abstract: A memory controller includes a command queue and an arbiter for selecting entries from the command queue for transmission to a DRAM. The arbiter transacts streaks of consecutive read commands and streaks of consecutive write commands. The arbiter transacts a streak for at least a minimum burst length based on a number of commands of a designated type available to be selected by the arbiter. Following the minimum burst length, the arbiter decides to start a new streak of commands of a different type based on a first set of one or more conditions indicating intra-burst efficiency.Type: GrantFiled: March 31, 2021Date of Patent: June 27, 2023Assignee: Advanced Micro Devices, Inc.Inventors: Guanhao Shen, Ravindra Nath Bhargava
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Patent number: 11687460Abstract: Methods, devices, and systems for GPU cache injection. A GPU compute node includes a network interface controller (NIC) which includes NIC receiver circuitry which can receive data for processing on the GPU, NIC transmitter circuitry which can send the data to a main memory of the GPU compute node and which can send coherence information to a coherence directory of the GPU compute node based on the data. The GPU compute node also includes a GPU which includes GPU receiver circuitry which can receive the coherence information; GPU processing circuitry which can determine, based on the coherence information, whether the data satisfies a heuristic; and GPU loading circuitry which can load the data into a cache of the GPU from the main memory if on the data satisfies the heuristic.Type: GrantFiled: April 26, 2017Date of Patent: June 27, 2023Assignee: Advanced Micro Devices, Inc.Inventors: Michael W. LeBeane, Walter B. Benton, Vinay Agarwala
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Patent number: 11687251Abstract: Systems and methods for dynamic repartitioning of physical memory address mapping involve relocating data stored at one or more physical memory locations of one or more memory devices to another memory device or mass storage device, repartitioning one or more corresponding physical memory maps to include new mappings between physical memory addresses and physical memory locations of the one or more memory devices, then loading the relocated data back onto the one or more memory devices at physical memory locations determined by the new physical address mapping. Such dynamic repartitioning of the physical memory address mapping does not require a processing system to be rebooted and has various applications in connection with interleaving reconfiguration and error correcting code (ECC) reconfiguration of the processing system.Type: GrantFiled: September 28, 2021Date of Patent: June 27, 2023Assignees: Advanced Micro Devices, Inc., ATI Technologies ULCInventors: Joseph L. Greathouse, Alan D. Smith, Francisco L. Duran, Felix Kuehling, Anthony Asaro
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Publication number: 20230195632Abstract: A data processing system includes a plurality of coherent masters, a plurality of coherent slaves, and a coherent data fabric. The coherent data fabric has upstream ports coupled to the plurality of coherent masters and downstream ports coupled to the plurality of coherent slaves for selectively routing accesses therebetween. The coherent data fabric includes a probe filter and a directory cleaner. The probe filter is associated with at least one of the downstream ports and has a plurality of entries that store information about each entry. The directory cleaner periodically scans the probe filter and selectively removes a first entry from the probe filter after the first entry is scanned.Type: ApplicationFiled: December 20, 2021Publication date: June 22, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Amit P. Apte, Kevin Michael Lepak, Ganesh Balakrishnan, Vydhyanathan Kalyanasundharam
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Publication number: 20230195640Abstract: Cache associativity allocation is described. In accordance with the described techniques, a portion of associativity of a cache is allocated to a category of cache requests. The portion of associativity corresponds to a subset of cachelines of the cache. A request is received to access the cache, and a cacheline of the subset of cachelines is allocated to the request based on a category associated with the request. Data corresponding to the request is loaded into the cacheline of the subset of cachelines.Type: ApplicationFiled: December 21, 2021Publication date: June 22, 2023Applicant: Advanced Micro Devices, Inc.Inventor: Jeffrey Christopher Allan
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Publication number: 20230197123Abstract: A method and apparatus for performing a simulated write in a computer system includes, responsive to a scheduled memory operation determined by a memory controller, sending a simulated write operation to a physical layer circuitry (PHY) to increase circuit power without enabling the output of the PHY until the memory operation begins. Responsive to the memory operation being complete, sending a simulated write operation to the PHY to decrease circuit power.Type: ApplicationFiled: December 20, 2021Publication date: June 22, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Anwar Kashem, Pouya Najafi Ashtiani, Craig Daniel Eaton, Kedarnath Balakrishnan
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Publication number: 20230195191Abstract: A power supply monitor includes a droop detection circuit which receives a digital signal and converts the digital signal to an analog signal, compares the analog signal to a monitored supply voltage, and responsive to detecting a droop below a designated value relative to the analog signal, produces a droop detection signal. The droop detection circuit includes a first comparator circuit with a series of inverters including at least a first complimentary-metal-oxide-semiconductor (CMOS) inverter with an input for receiving the analog signal and a second CMOS inverter, which are both supplied with a monitored supply voltage. The inverters operate in a crowbar mode when the monitored voltage supply is near a designated level, and each include four pull-up transistors connected in two parallel legs of two transistors, and four pull-down transistors connected in two parallel legs of two transistors.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Applicants: Advanced Micro Devices, Inc., ATI Technologies ULCInventors: Kaushik Mazumdar, Miguel Rodriguez, Mikhail Rodionov, Stephen Victor Kosonocky
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Publication number: 20230195204Abstract: A system and method for fast save/restore is disclosed. The system and method include one or more logical units (LUs) residing in independent power domains, one or more digital frequency synthesizers (DFS), each of the one or more DFS associated with one of the one or more LUs, the one or more DFSs configured to lock a system complex frequency and ramp the one or more LUs to system complex frequency, and one or more slave fast save/restore control (FSRC) units, each slave FSRC unit associated with one of the one or more LUs, the one or more slave FSRC units configured to save/restore the FSRC states of the one or more LUs.Type: ApplicationFiled: December 16, 2021Publication date: June 22, 2023Applicant: Advanced Micro Devices, Inc.Inventors: Mom-Eng Ng, Dilip Kumar Jha
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Publication number: 20230195625Abstract: Data routing for efficient decompressor use is described. In accordance with the described techniques, a cache controller receives requests from multiple requestors for elements of data stored in a compressed format in a cache. The requests include at least a first request from a first requestor and a second request from a second requestor. A decompression routing system identifies a redundant element of data requested by both the first requestor and the second requestor and causes decompressors to decompress the requested elements of data. The decompression includes performing a single decompression of the redundant element. After the decompression, the decompression routing system routes the decompressed elements to the plurality of requestors, which includes routing the decompressed redundant element to both the first requestor and the second requestor.Type: ApplicationFiled: December 21, 2021Publication date: June 22, 2023Applicant: Advanced Micro Devices, Inc.Inventor: Jeffrey Christopher Allan
