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    • 25. 发明授权
    • Cache coherency within multiprocessor computer system
    • 多处理器计算机系统中的缓存一致性
    • US08539164B2
    • 2013-09-17
    • US12244700
    • 2008-10-02
    • Craig WarnerGary GostinDan Robinson
    • Craig WarnerGary GostinDan Robinson
    • G06F13/00
    • G06F12/082G06F12/0831G06F12/12G06F2212/1048
    • An embodiment of a multiprocessor computer system comprises main memory, a remote processor capable of accessing the main memory, a remote cache device operative to store accesses by said remote processor to said main memory, and a filter tag cache device associated with the main memory. The filter cache device is operative to store information relating to remote ownership of data in the main memory including ownership by the remote processor. The filter cache device is operative to selectively invalidate filter tag cache entries when space is required in the filter tag cache device for new cache entries. The remote cache device is responsive to events indicating that a cache entry has low value to the remote processor to send a hint to the filter tag cache device. The filter tag cache device is responsive to a hint in selecting a filter tag cache entry to invalidate.
    • 多处理器计算机系统的实施例包括主存储器,能够访问主存储器的远程处理器,可操作以存储所述远程处理器对所述主存储器的访问的远程高速缓存设备以及与主存储器相关联的过滤器标签高速缓存设备。 过滤器高速缓存设备用于存储与主存储器中的数据的远程所有权有关的信息,包括远程处理器的所有权。 过滤器高速缓存设备可操作以在过滤器标签高速缓存设备中为新的高速缓存条目需要空间时,选择性地使过滤器标签高速缓存条目无效。 远程高速缓存设备响应于指示高速缓存条目对于远程处理器具有低值以向该过滤器标签高速缓存设备发送提示的事件。 过滤器标签缓存设备响应于选择过滤器标签高速缓存条目以使其无效的提示。
    • 27. 发明申请
    • System and method for a distributed crossbar network using a plurality of crossbars
    • 一种使用多个十字条的分布式交叉网络的系统和方法
    • US20070180182A1
    • 2007-08-02
    • US11346041
    • 2006-02-02
    • Gary GostinMark Shaw
    • Gary GostinMark Shaw
    • G06F13/00G06F15/76
    • G06F13/4022G06F15/17337
    • A system and method for single hop, processor-to-processor communication in a multiprocessing system over a plurality of crossbars are disclosed. Briefly described, one embodiment is a multiprocessing system comprising a plurality of processors having a plurality of high-bandwidth point-to-point links; a plurality of processor clusters, each processor cluster having a predefined number of the processors residing therein; and a plurality of crossbars, one of the crossbars coupling each of the processors of one of the plurality of processor clusters to each of the processors of another of the plurality of processor clusters, such that all processors are coupled to each of the other processors, and such that the number of crossbars is equal to [X*(X−1)/2], wherein X equals the number of processor clusters.
    • 公开了一种用于多处理系统中的多跳交叉的单跳,处理器到处理器通信的系统和方法。 简要描述,一个实施例是包括具有多个高带宽点对点链路的多个处理器的多处理系统; 多个处理器集群,每个处理器集群具有驻留在其中的预定数量的处理器; 以及多个十字条,所述十字条中的一个将所述多个处理器群中的一个处理器的处理器中的每一个耦合到所述多个处理器群中的另一处理器群的每个处理器,使得所有处理器耦合到每个其他处理器, 并且使得十字形的数量等于[X *(X-1)/ 2],其中X等于处理器集群的数量。
    • 30. 发明申请
    • Cache line ownership transfer in multi-processor computer systems
    • 多处理器计算机系统中的高速缓存行所有权转移
    • US20050154840A1
    • 2005-07-14
    • US10756436
    • 2004-01-12
    • Christopher GreerMichael SchroederGary Gostin
    • Christopher GreerMichael SchroederGary Gostin
    • G06F13/16G06F12/00G06F12/08G06F13/00
    • G06F12/0822Y10S707/99952
    • Transferring cache line ownership between processors in a shared memory multi-processor computer system. A request for ownership of a cache line is sent from a requesting processor to a memory unit. The memory unit receives the request and determines which one of a plurality of processors other than the requesting processor has ownership of the requested cache line. The memory sends an ownership recall to that processor. In response to the ownership recall, the other processor sends the requested cache line to the requesting processor, which may send a response to the memory unit to confirm receipt of the requested cache line. The other processor may optionally send a response to the memory unit to confirm that the other processor has sent the requested cache line to the requesting processor. A copy of the data for the requested cache line may, under some circumstances, also be sent to the memory unit by the other processor as part of the response.
    • 在共享内存多处理器计算机系统中的处理器之间传输高速缓存行所有权。 高速缓存行的所有权请求从请求处理器发送到存储器单元。 存储器单元接收该请求并确定除请求处理器之外的多个处理器中的哪一个处理器具有所请求的高速缓存行的所有权。 内存向所述处理器发送所有权回收。 响应于所有权调用,另一个处理器将请求的高速缓存行发送到请求处理器,该请求处理器可以向存储器单元发送响应以确认所请求的高速缓存行的接收。 另一个处理器可以可选地向存储器单元发送响应以确认另一个处理器已将请求的高速缓存行发送到请求处理器。 在某些情况下,所请求的高速缓存行的数据的副本也可以由其他处理器作为响应的一部分发送到存储器单元。