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    MULTILEVEL CACHE HIERARCHY FOR FINDING A CACHE LINE ON A REMOTE NODE
    41.
    发明申请
    MULTILEVEL CACHE HIERARCHY FOR FINDING A CACHE LINE ON A REMOTE NODE 有权
    用于在远程节点上查找缓存行的多个缓存高速缓存

    公开(公告)号：US20130339609A1

    公开(公告)日：2013-12-19

    申请号：US13793708

    申请日：2013-03-11

    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

    Inventor： Timothy C. Bronson ,  Garrett M. Drapala ,  Michael A. Blake ,  Craig R. Walters ,  Pak-Kin Mak

    IPC: G06F12/08

    CPC classification number: G06F12/0811 ,  G06F12/0817 ,  G06F12/0884 ,  G06F12/123

    Abstract: Embodiments relate to accessing a cache line on a multi-level cache system having a system memory. Based on a request for exclusive ownership of a specific cache line at the local node, requests are concurrently sent to the system memory and remote nodes of the plurality of nodes for the specific cache line by the local node. The specific cache line is found in a specific remote node. The specific remote node is one of the remote nodes. The specific cache line is removed from the specific remote node for exclusive ownership by another node. Based on the specified node having the specified cache line in ghost state, any subsequent fetch request is initiated for the specific cache line from the specific node encounters the ghost state. When the ghost state is encountered, the subsequent fetch request is directed only to nodes of the plurality of nodes.

    Abstract translation: 实施例涉及在具有系统存储器的多级缓存系统上访问高速缓存行。 基于本地节点对特定高速缓存线的独占所有权的请求，请求被本地节点同时发送到用于特定高速缓存行的多个节点的系统内存和远程节点。 在特定的远程节点中找到特定的高速缓存行。 特定的远程节点是远程节点之一。 从特定的远程节点中删除特定的高速缓存行以供另一个节点独占所有。 基于具有指定缓存行在幽灵状态的指定节点，任何后续的提取请求将针对具体的缓存行启动，特定的缓存行遇到幽灵状态。 当遇到鬼状态时，后续的提取请求仅被引导到多个节点的节点。

    SYSTEM REFRESH IN CACHE MEMORY
    42.
    发明申请
    SYSTEM REFRESH IN CACHE MEMORY 有权
    系统刷新缓存存储器

    公开(公告)号：US20130061001A1

    公开(公告)日：2013-03-07

    申请号：US13655053

    申请日：2012-10-18

    Applicant: International Business Machines Corporation

    Inventor： Michael A. Blake ,  Timothy C. Bronson ,  Hieu T. Huynh ,  Kenneth D. Klapproth

    IPC: G06F12/08

    CPC classification number: G06F12/0897 ,  G06F13/14 ,  G06F13/16 ,  G06F13/1605 ,  G06F13/1636 ,  G11C11/406 ,  G11C11/40603 ,  G11C11/40607 ,  G11C11/40618

    Abstract: System refresh in a cache memory that includes generating a refresh time period (RTIM) pulse at a centralized refresh controller of the cache memory and activating a refresh request at the centralized refresh controller based on generating the RTIM pulse. The refresh request is associated with a single cache memory bank of the cache memory. A refresh grant is received and transmitted to a bank controller. The bank controller is associated with and localized at the single cache memory bank of the cache memory.

    Abstract translation: 高速缓冲存储器中的系统刷新，其包括在高速缓冲存储器的集中式刷新控制器处产生刷新时间周期（RTIM）脉冲，并且基于产生RTIM脉冲在集中式刷新控制器处激活刷新请求。 刷新请求与缓存存储器的单个高速缓存存储器组相关联。 刷新授权被接收并发送给银行控制器。 银行控制器与高速缓冲存储器的单个高速缓冲存储器组相关联并且被本地化。

    MODIFIED CENTRAL SERIALIZATION OF REQUESTS IN MULTIPROCESSOR SYSTEMS
    45.
    发明申请
    MODIFIED CENTRAL SERIALIZATION OF REQUESTS IN MULTIPROCESSOR SYSTEMS 审中-公开

    公开(公告)号：US20200278886A1

    公开(公告)日：2020-09-03

    申请号：US16289698

    申请日：2019-03-01

    Applicant: International Business Machines Corporation

    Inventor： Michael A. Blake ,  Arun Iyengar

    IPC: G06F9/50 ,  G06F9/48

    Abstract: Embodiments includes a computer-implemented method, a system and computer-program product for modifying central serialization of requests in multiprocessor systems. Some embodiments includes receiving an operation requiring resources from a pool of resources, determining an availability of the pool of resources required by the operation, and selecting a queue of a plurality of queues to queue the operation based at least in part on the availability of the pool of resources. Some embodiments also include setting a resource needs register and needs register for the selected queue, and setting a take-two bit for the selected queue.

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