Electrical computers and digital processing systems: processing – Processing control – Processing control for data transfer
Reexamination Certificate
2005-11-08
2005-11-08
Chan, Eddie (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Processing control for data transfer
Reexamination Certificate
active
06963967
ABSTRACT:
Disclosed is a method of processing instructions in a data processing system. An instruction sequence that includes a memory access instruction is received at a processor in program order. In response to receipt of the memory access instruction a memory access request and a barrier operation are created. The barrier operation is placed on an interconnect after the memory access request is issued to a memory system. After the barrier operation has completed, the memory access request is completed in program order. When the memory access request is a load request, the load request is speculatively issued if a barrier operation is pending. Data returned by the speculatively issued load request is only returned to a register or execution unit of the processor when an acknowledgment is received for the barrier operation.
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Merriam Webster's Collegiate Dictionary. Tenth Edition. Springfield, Mass.: Merriam-Webster, Inc. © 1997. p. 614.
Arimilli Ravi Kumar
Dodson John Steven
Guthrie Guy Lynn
Williams Derek Edward
Chan Eddie
Dillon & Yudell LLP
International Business Machines - Corporation
Li Aimee J.
Salys Casimer K.
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