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    Cache blocking for dispatches
    1.
    发明授权
    Cache blocking for dispatches 有权

    公开(公告)号：US12189534B2

    公开(公告)日：2025-01-07

    申请号：US17564474

    申请日：2021-12-29

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

    Inventor： Saurabh Sharma ,  Hashem Hashemi ,  Paavo Pessi ,  Mika Tuomi ,  Gianpaolo Tommasi ,  Jeremy Lukacs ,  Guennadi Riguer

    IPC: G06F9/46 ,  G06F9/48 ,  G06F12/0855

    Abstract: A processing system divides successive dispatches of work items into portions. The successive dispatches are separated from each other by barriers, each barrier indicating that the work items of the previous dispatch must complete execution before work items of a subsequent dispatch can begin execution. In some embodiments, the processing system interleaves execution of portions of a first dispatch with portions of subsequent dispatches that consume data produced by the first dispatch. The processing system thereby reduces the amount of data written to the local cache by a producer dispatch while preserving data locality for a subsequent consumer (or consumer/producer) dispatch and facilitating processing efficiency.

    STOCHASTIC OPTIMIZATION OF SURFACE CACHEABILITY IN PARALLEL PROCESSING UNITS
    3.
    发明公开
    STOCHASTIC OPTIMIZATION OF SURFACE CACHEABILITY IN PARALLEL PROCESSING UNITS 审中-公开

    公开(公告)号：US20230195639A1

    公开(公告)日：2023-06-22

    申请号：US17557475

    申请日：2021-12-21

    Applicant: ADVANCED MICRO DEVICES, INC.

    Inventor： Saurabh Sharma ,  Jeremy Lukacs ,  Hashem Hashemi ,  Gianpaolo Tommasi ,  Christopher J. Brennan

    IPC: G06F12/0893

    CPC classification number: G06F12/0893 ,  G06F2212/6042

    Abstract: A processing system selectively allocates storage at a local cache of a parallel processing unit for cache lines of a repeating pattern of data that exceeds the storage capacity of the cache. The processing system identifies repeating patterns of data having cache lines that have a reuse distance that exceeds the storage capacity of the cache. A cache controller allocates storage for only a subset of cache lines of the repeating pattern of data at the cache and excludes the remainder of cache lines of the repeating pattern of data from the cache. By restricting the cache to store only a subset of cache lines of the repeating pattern of data, the cache controller increases the hit rate at the cache for the subset of cache lines.

    VARIABLE DISPATCH WALK FOR SUCCESSIVE CACHE ACCESSES
    4.
    发明公开
    VARIABLE DISPATCH WALK FOR SUCCESSIVE CACHE ACCESSES 审中-公开

    公开(公告)号：US20230195626A1

    公开(公告)日：2023-06-22

    申请号：US17558008

    申请日：2021-12-21

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

    Inventor： Saurabh Sharma ,  Jeremy Lukacs ,  Hashem Hashemi ,  Gianpaolo Tommasi ,  Guennadi Riguer ,  Mark Fowler ,  Randy Ramsey

    IPC: G06F12/0806 ,  G06F12/10

    CPC classification number: G06F12/0806 ,  G06F12/10 ,  G06F2212/1016

    Abstract: A processing system is configured to translate a first cache access pattern of a dispatch of work items to a cache access pattern that facilitates consumption of data stored at a cache of a parallel processing unit by a subsequent access before the data is evicted to a more remote level of the memory hierarchy. For consecutive cache accesses having read-after-read data locality, in some embodiments the processing system translates the first cache access pattern to a space-filling curve. In some embodiments, for consecutive accesses having read-after-write data locality, the processing system translates a first typewriter cache access pattern that proceeds in ascending order for a first access to a reverse typewriter cache access pattern that proceeds in descending order for a subsequent cache access. By translating the cache access pattern based on data locality, the processing system increases the hit rate of the cache.

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