利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN100382015C 用于在多处理器系统中执行数据预取的方法和设备 失效 - 权利终止

用于在多处理器系统中执行数据预取的方法和设备
摘要：
本发明公开了一种在多处理器系统内执行数据预取的方法和设备。该多处理器系统包括多个处理器，每个处理器具有高速缓冲存储器。该高速缓冲存储器被细分为多个片。多处理器系统内的请求处理器首先发出一组预取请求。每个预取请求用于请求处理器的高速缓冲存储器的各片之一。响应预取请求未击中请求处理器的高速缓冲存储器，将该预取请求合并为一个组合预取请求。然后，将组合预取请求发送到多处理器系统内的所有未请求处理器的各高速缓冲存储器。响应未请求处理器的各高速缓冲存储器发出的组合清除请求，从系统存储器获得组合预取请求的数据。
摘要（英）：

A method and apparatus for performing data prefetch in a multiprocessor system are disclosed. The multiprocessor system includes multiple processors, each having a cache memory. The cache memory is subdivided into multiple slices. A group of prefetch requests is initially issued by a requesting processor in the multiprocessor system. Each prefetch request is intended for one of the respective slices of the cache memory of the requesting processor. In response to the prefetch requests being missed in the cache memory of the requesting processor, the prefetch requests are merged into one combined prefetch request. The combined prefetch request is then sent to the cache memories of all the non-requesting processors within the multiprocessor system. In response to a combined clean response from the cache memories of all the non-requesting processors, data are then obtained for the combined prefetch request from a system memory.

公开/授权文献
0/0