发明授权
US5381536A Method and apparatus for separate mark and wait instructions for
processors having multiple memory ports
失效
用于具有多个存储器端口的处理器的单独标记和等待指令的方法和装置
- 专利标题: Method and apparatus for separate mark and wait instructions for processors having multiple memory ports
- 专利标题(中): 用于具有多个存储器端口的处理器的单独标记和等待指令的方法和装置
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申请号: US249084申请日: 1994-05-25
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公开(公告)号: US5381536A公开(公告)日: 1995-01-10
- 发明人: Andrew E. Phelps , Roger E. Eckert , Richard E. Hessel
- 申请人: Andrew E. Phelps , Roger E. Eckert , Richard E. Hessel
- 申请人地址: MN Eagan
- 专利权人: Cray Research, Inc.
- 当前专利权人: Cray Research, Inc.
- 当前专利权人地址: MN Eagan
- 主分类号: G06F9/38
- IPC分类号: G06F9/38 ; G06F11/36 ; G06F12/00 ; G06F13/00 ; G06F15/16
摘要:
The present invention provides a method and apparatus for handling memory hazards in processors having multiple memory ports wherein the operation of marking of the memory requests that may be related to a memory hazard is separated from the operation of waiting for the memory hazard to clear. The separation of the operation of marking of memory hazards from the operation of waiting for memory hazards to clear allows a compiler to schedule other instructions, as well as other memory operations not directed to the memory location involved in the memory hazard sequence, during the time between the operations of marking and waiting for the memory hazard to clear. The waiting period ends once it is clear that the marked memory requests will execute in the order in which they were issued.
公开/授权文献
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