Intel Corporation

Aravindh V Anantaraman

Altug Koker

Joydeep Ray

Abhishek R Appu

Varghese George

Elmoustapha Ould-Ahmed-Vall

Subramaniam M Maiyuran

Valentin Andrei

Vasanth Ranganathan

Mike MacPherson

Prasoonkumar Surti

Nicolas C Galoppo Von Borries

Sungye Kim

Lakshminarayanan Striramassarma

Ben J Ashbaugh

Murali Ramadoss

Kamal Sinha

Scott R Janus

Brent E Insko

Vikranth Vemulapalli

Jonathan D Pearce

Pattabhiraman K

Arthur Hunter, Jr

Ankur N Shah

William B Sadler

Travis T Schluessler

David M Puffer

Niranjan L Cooray

Saurabh Tangri

Sanjeev S Jahagirdar

Linda L Hurd

Aditya Navale

James A Valerio

Abhishek Venkatesh

Wenyin Fu

Bhushan M Borole

Xinmin Tian

Saurabh Sharma

Zvika Greenfield

Eric J Hoekstra

Durgaprasad Bilagi

Marian Alin Petre

Michael Macpherson

Balaji Vembu

Selvakumar Panneer

Jeffery S Boles

Lakshminarayana Pappu

Stephen R Van Doren

Hema Chand Nalluri

Anant V Nori

Israel Diamand

Yoav Harel

Ashok Jagannathan

Jayakrishna P S

Ritu Gupta

Nir Misgav

Shailesh Shah

Sean Coleman

Michael Apodaca

Blaise B Fanning

Amit Kumar Srivastava

Julius Yuli Mandelblat

Bryan R White

Srinivas Sridharan

Rahul Pal

Mohammad R Haghighat

Ajaya V Durg

Dongsheng Bi

Vidhya Krishnan

Ayan Mandal

Nilay Mistry

Sudhakar Kamma

Kritika Bala

Leon Polishuk

Guadalupe J Garcia

Mikhail E Smorkalov

Sudarshan Srinivasan

Kenneth Daxer

Sudarshanram Shetty

Mahak Gupta

Ping Hang Cheung

Niran Cooray

Nicolas Galappo Von Borries

Neetu Jindal

Robert D Adler

Pradeep Ramachandran

Rahul Joshi

Shrikul Atulkumar Joshi

Yossi Grotas

K Pattabhiraman

S Jayakrishna P

Nicolas Galoppo Von Borries

Described herein is a partitionable graphics processor having multiple render front ends. The partitions of the graphics processor maintain render functionality when partitioned and enable fault isolation and independent multi-client rendering.

Multi-render partitioning

In a further embodiment, a system on a chip integrated circuit (SoC) is provided that includes an active base die including a first cache memory, a first die mounted on and coupled with the active base die, and a second die mounted on the active base die and coupled with the active base die and the first die. The first die includes an interconnect fabric, an input/output interface, and an atomic operation handler. The second die includes an array of graphics processing elements and an interface to the first cache memory of the active base die. At least one of the graphics processing elements are configured to perform, via the atomic operation handler, an atomic operation to a memory device.

Atomic handling for disaggregated 3D structured SoCs

Embodiments are generally directed to memory prefetching in multiple GPU environment. An embodiment of an apparatus includes multiple processors including a host processor and multiple graphics processing units (GPUs) to process data, each of the GPUs including a prefetcher and a cache; and a memory for storage of data, the memory including a plurality of memory elements, wherein the prefetcher of each of the GPUs is to prefetch data from the memory to the cache of the GPU; and wherein the prefetcher of a GPU is prohibited from prefetching from a page that is not owned by the GPU or by the host processor.

Prefetch status notification for memory prefetching

Embodiments described herein provide techniques to facilitate instruction-based control of memory attributes. One embodiment provides a graphics processor comprising a processing resource, a memory device, a cache coupled with the processing resources and the memory, and circuitry to process a memory access message received from the processing resource. The memory access message enables access to data of the memory device. To process the memory access message, the circuitry is configured to determine one or more cache attributes that indicate whether the data should be read from or stored the cache. The cache attributes may be provided by the memory access message or stored in state data associated with the data to be accessed by the access message.

Implicit fence for write messages

An apparatus to facilitate efficient data sharing for graphics data processing operations is disclosed. The apparatus includes a processing resource to generate a stream of instructions, an L1 cache communicably coupled to the processing resource and comprising an on-page detector circuit to determine that a set of memory requests in the stream of instructions access a same memory page; and set a marker in a first request of the set of memory requests; and arbitration circuitry communicably coupled to the L1 cache, the arbitration circuitry to route the set of memory requests to memory comprising the memory page and to, in response to receiving the first request with the marker set, remain with the processing resource to process the set of memory requests.

Efficient data sharing for graphics data processing operations

Apparatuses including general-purpose graphics processing units having on chip dense memory for temporal buffering are disclosed. In one embodiment, a graphics multiprocessor includes a plurality of compute engines to perform first computations to generate a first set of data, cache for storing data, and a high density memory that is integrated on chip with the plurality of compute engines and the cache. The high density memory to receive the first set of data, to temporarily store the first set of data, and to provide the first set of data to the cache during a first time period that is prior to a second time period when the plurality of compute engines will use the first set of data for second computations.

On chip dense memory for temporal buffering

Methods and apparatus relating to data initialization techniques. In an example, an apparatus comprises a processor to read one or more metadata codes which map to one or more cache lines in a cache memory and invoke a random number generator to generate random numerical data for the one or more cache lines in response to a determination that the one more metadata codes indicate that the cache lines are to contain random numerical data. Other embodiments are also disclosed and claimed.

Data initialization techniques

Apparatuses to synchronize lanes that diverge or threads that drift are disclosed. In one embodiment, a graphics multiprocessor includes a queue having an initial state of groups with a first group having threads of first and second instruction types and a second group having threads of the first and second instruction types. A regroup engine (or regroup circuitry) regroups threads into a third group having threads of the first instruction type and a fourth group having threads of the second instruction type.

Systems and methods for synchronization of multi-thread lanes

Systems and methods for improving cache efficiency and utilization are disclosed. In one embodiment, a graphics processor includes processing resources to perform graphics operations and a cache controller of a cache coupled to the processing resources. The cache controller is configured to control cache priority by determining whether default settings or an instruction will control cache operations for the cache.

Systems and methods for improving cache efficiency and utilization

Embodiments are generally directed to graphics processor data access and sharing. An embodiment of an apparatus includes a circuit element to produce a result in processing of an application; a load-store unit to receive the result and generate pre-fetch information for a cache utilizing the result; and a prefetch generator to produce prefetch addresses based at least in part on the pre-fetch information; wherein the load-store unit is to receive software assistance for prefetching, and wherein generation of the pre-fetch information is based at least in part on the software assistance.

Graphics processor data access and sharing

Methods and apparatus relating to techniques for multi-tile memory management. In an example, a graphics processor includes an interposer, a first chiplet coupled with the interposer, the first chiplet including a graphics processing resource and an interconnect network coupled with the graphics processing resource, cache circuitry coupled with the graphics processing resource via the interconnect network, and a second chiplet coupled with the first chiplet via the interposer, the second chiplet including a memory-side cache and a memory controller coupled with the memory-side cache. The memory controller is configured to enable access to a high-bandwidth memory (HBM) device, the memory-side cache is configured to cache data associated with a memory access performed via the memory controller, and the cache circuitry is logically positioned between the graphics processing resource and a chiplet interface.

Multi-tile memory management

Systems and methods for improving cache efficiency and utilization are disclosed. In one embodiment, a graphics processor includes processing resources to perform graphics operations and a cache controller of a cache memory that is coupled to the processing resources. The cache controller is configured to set an initial aging policy using an aging field based on age of cache lines within the cache memory and to determine whether a hint or an instruction to indicate a level of aging has been received.

Systems and methods for cache optimization

Embodiments are generally directed to cache structure and utilization. An embodiment of an apparatus includes one or more processors including a graphics processor; a memory for storage of data for processing by the one or more processors; and a cache to cache data from the memory; wherein the apparatus is to provide for dynamic overfetching of cache lines for the cache, including receiving a read request and accessing the cache for the requested data, and upon a miss in the cache, overfetching data from memory or a higher level cache in addition to fetching the requested data, wherein the overfetching of data is based at least in part on a current overfetch boundary, and provides for data is to be prefetched extending to the current overfetch boundary.

Cache structure and utilization

Systems, methods, and apparatuses relating to circuitry to implement dynamic bypassing of last level cache are described. In one embodiment, a hardware processor includes a cache to store a plurality of cache lines of data, a processing element to generate a memory request and mark the memory request with a reuse hint value, and a cache controller circuit to mark a corresponding cache line in the cache as more recently used when the memory request is a read request that is a hit in the cache and the reuse hint value is a first value, and mark the corresponding cache line in the cache as less recently used when the memory request is the read request that is the hit in the cache and the reuse hint value is a second, different value.

Apparatuses, methods, and systems for dynamic bypassing of last level cache

Systems and methods for improving cache efficiency and utilization are disclosed. In one embodiment, a graphics processor includes processing resources to perform graphics operations and a cache controller of a cache memory that is coupled to the processing resources. The cache controller is configured to set an initial aging policy using an aging field based on age of cache lines within the cache memory and to determine whether a hint or an instruction to indicate a level of aging has been received. In one embodiment, the cache memory configured to be partitioned into multiple cache regions, wherein the multiple cache regions include a first cache region having a cache eviction policy with a configurable level of data persistence.

Growing community of inventors

Folsom, CA, United States of America

Aravindh V Anantaraman