发明授权
US06593931B1 Method and apparatus for improving system memory bandwidth utilization during graphics translational lookaside buffer cache miss fetch cycles
有权
用于在图形翻译后备缓冲区高速缓存未命中获取循环期间改善系统存储器带宽利用的方法和装置
- 专利标题: Method and apparatus for improving system memory bandwidth utilization during graphics translational lookaside buffer cache miss fetch cycles
- 专利标题(中): 用于在图形翻译后备缓冲区高速缓存未命中获取循环期间改善系统存储器带宽利用的方法和装置
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申请号: US09452540申请日: 1999-12-01
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公开(公告)号: US06593931B1公开(公告)日: 2003-07-15
- 发明人: Josh B. Mastronarde , Russell W. Dyer , Himanshu Sinha
- 申请人: Josh B. Mastronarde , Russell W. Dyer , Himanshu Sinha
- 主分类号: G06F1318
- IPC分类号: G06F1318
摘要:
An embodiment of a memory controller that improves main memory bandwidth utilization during graphics translational lookaside buffer fetch cycles is disclosed. The memory controller includes a first request path and a second request path. The memory controller further includes a graphics translational lookaside buffer that includes a cache. The graphics translational lookaside buffer issues an address fetch request to a memory interface when a graphics memory request received from the first request path or from the second request path misses the cache. The memory controller also includes a memory arbiter that includes a first request path cycle tracker and a second request path cycle tracker. The memory arbiter allows a request received from the second request path to be issued to the memory interface when a graphics memory request received from the first request path is stalled due to a graphics translational lookaside buffer cache miss.
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