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    • 3. 发明公开
    • 멀티프로세서 시스템, 시스템 보드 및 캐시 대체 요구 처리방법
    • 多处理器系统,系统板和缓存处理请求处理方法
    • KR1020080016419A
    • 2008-02-21
    • KR1020070018303
    • 2007-02-23
    • 후지쯔 가부시끼가이샤
    • 이시즈카다카하루우에키도시카즈하타이다마코토야마모토다카시호소카와유카오와키다케시이토다이스케
    • G06F15/177G06F15/16
    • G06F12/0833
    • A multiprocessor system, a system board, and a method for handling a cache replacement request are provided to handle the cache replacement request efficiently by preventing load on a global bus and generation of unnecessary eviction caused from the cache replacement request. A multiprocessor system includes a plurality of system boards(100a-100d) respectively having CPU(120a,120b) and a request handler(114) handling the request issued from the CPU, and an address crossbar board(200) arbitrating the request of each system board. The system board includes a cache replacement request loopback circuit(140) determining whether the request issued from the internal CPU. The cache replacement request loopback circuit transfers the request to the address crossbar board when the determined request is not the cache replacement request, and transfers the request to the internal request handler without transferring the request to the address crossbar board when the determined request is the cache replacement request. The cache replacement request loopback circuit includes a loopback queue keeping the cache replacement request issued from the internal CPU.
    • 提供了一种多处理器系统,系统板和用于处理高速缓存替换请求的方法,以通过防止全局总线上的负载并产生由高速缓存替换请求引起的不必要的驱逐来有效地处理高速缓存替换请求。 多处理器系统包括分别具有CPU(120a,120b)和处理从CPU发出的请求的请求处理器(114)的多个系统板(100a-100d)和地址横栏(200)仲裁每个 系统板。 系统板包括高速缓存替换请求回送电路(140),用于确定从内部CPU发出的请求。 当确定的请求不是高速缓存替换请求时,高速缓存替换请求回送电路将请求传送到地址交叉开关板,并且当确定的请求是高速缓存时,将请求传送到内部请求处理程序而不将请求传送到地址横栏 更换请求。 高速缓存替换请求环回电路包括保持从内部CPU发出的高速缓存替换请求的环回队列。
    • 6. 发明公开
    • 스누프 태그의 제어 장치
    • SNOOP标签控制装置
    • KR1020080016437A
    • 2008-02-21
    • KR1020070049575
    • 2007-05-22
    • 후지쯔 가부시끼가이샤
    • 하타이다마코토우에키도시카즈이시즈카다카하루야마모토다카시호소카와유카오와키다케시이토다이스케
    • G06F9/06
    • G06F12/0822G06F12/123
    • A device for controlling snoop tags is provided to require no index lock, process a read request of the same index promptly, and improve latency by entering the index to a queue and suspending the process of a replace request when the replace request is received. A snoop tag storing part(6) stores the snoop tags corresponding to contents of cache memories of a processor. A queue(2) stores way information and the index of a replace target as an entry for the replace request received from the processor. A comparator(3) compares the index stored in the queue with the index of the read request. A process based on the read request matched with the index is performed for the snoop tag storing part depending on a comparison result. The replace request is invalidated without storing the replace request to the queue if space is not found in the queue when the replace request is received. A replacing part(4) replaces the way information, which is the replace target of the read request matched with the index, with the way information of the entry matched with the index in the queue.
    • 提供了一种用于控制窥探标签的设备,以便不需要索引锁定,及时处理相同索引的读取请求,并通过在接收到替换请求时将索引输入队列并暂停替换请求的过程来改善延迟。 窥探标签存储部分(6)存储与处理器的高速缓冲存储器的内容相对应的窥探标签。 队列(2)将路由信息和替换目标的索引作为从处理器接收的替换请求的条目存储。 比较器(3)将存储在队列中的索引与读请求的索引进行比较。 根据比较结果,针对窥探标签存储部分执行基于与索引匹配的读取请求的处理。 如果在接收到替换请求时没有在队列中找到空格,则替换请求无效,而不将替换请求存储到队列中。 替换部分(4)将与索引匹配的读取请求的替换目标的方式信息替换为与队列中的索引匹配的条目的路径信息。