发明公开
EP1141838A1 CONSERVATION OF SYSTEM MEMORY BANDWIDTH AND CACHE COHERENCY MAINTENANCE USING MEMORY CANCEL MESSAGES
审中-公开
保存系统的内存带宽和保持高速缓存一致性SPEICHERANNULIERUNGSNACHRICHTEN
- 专利标题： CONSERVATION OF SYSTEM MEMORY BANDWIDTH AND CACHE COHERENCY MAINTENANCE USING MEMORY CANCEL MESSAGES
- 专利标题（中）： 保存系统的内存带宽和保持高速缓存一致性SPEICHERANNULIERUNGSNACHRICHTEN
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申请号： EP99944008.4申请日： 1999-08-26
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公开(公告)号： EP1141838A1公开(公告)日： 2001-10-10
- 发明人: KELLER, James, B.
- 申请人： ADVANCED MICRO DEVICES INC.
- 申请人地址： One AMD Place,Mail Stop 68 Sunnyvale,California 94088-3453 US
- 专利权人： ADVANCED MICRO DEVICES INC.
- 当前专利权人： ADVANCED MICRO DEVICES INC.
- 当前专利权人地址： One AMD Place,Mail Stop 68 Sunnyvale,California 94088-3453 US
- 代理机构： Sanders, Peter Colin Christopher (GB)
- 优先权： US217699 19981221; US217212 19981221; US217649 19981221; US370970 19990810
- 国际公布： WO0038070 20000629
- 主分类号： G06F12/08
- IPC分类号： G06F12/08
摘要：
A messaging scheme that conserves system memory bandwidth and maintains cache coherency during a victim block write operation in a multiprocessing computer system (10) is described. A target node (72) receives a memory cancel response corresponding to a transaction, and aborts processing of the transaction in response to the memory cancel response. In one embodiment, the transaction is a victim block write and the memory cancel response is received from a source node (70). In another embodiment, the transaction is a read operation and the memory cancel response is received from a different node (76) having a modified copy of the data addressed by the read operation.
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