发明名称 |
Cache residence prediction |
摘要 |
The present invention proposes a novel cache residence prediction mechanism that predicts whether requested data of a cache miss can be found in another cache. The memory controller can use the prediction result to determine if it should immediately initiate a memory access, or initiate no memory access until a cache snoop response shows that the requested data cannot be supplied by a cache. The cache residence prediction mechanism can be implemented at the cache side, the memory side, or both. A cache-side prediction mechanism can predict that data requested by a cache miss can be found in another cache if the cache miss address matches an address tag of a cache line in the requesting cache and the cache line is in an invalid state. A memory-side prediction mechanism can make effective prediction based on observed memory and cache operations that are recorded in a prediction table.
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申请公布号 |
US2005182907(A1) |
申请公布日期 |
2005.08.18 |
申请号 |
US20040779999 |
申请日期 |
2004.02.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
SHEN XIAOWEI;HUH JAEHYUK;SINHAROY BALARAM |
分类号 |
G06F12/00;G06F12/08;(IPC1-7):G06F12/00 |
主分类号 |
G06F12/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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