Invention Grant
US07676656B2 Minimizing unscheduled D-cache miss pipeline stalls in a cascaded delayed execution pipeline
失效
最小化级联延迟执行管道中的非计划D缓存未命中流水线停顿
- Patent Title: Minimizing unscheduled D-cache miss pipeline stalls in a cascaded delayed execution pipeline
- Patent Title (中): 最小化级联延迟执行管道中的非计划D缓存未命中流水线停顿
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Application No.: US12167145Application Date: 2008-07-02
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Publication No.: US07676656B2Publication Date: 2010-03-09
- Inventor: David A. Luick
- Applicant: David A. Luick
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Patterson & Sheridan LLP
- Main IPC: G06F9/30
- IPC: G06F9/30

Abstract:
A method and apparatus for minimizing unscheduled D-cache miss pipeline stalls is provided. In one embodiment, execution of an instruction in a processor is scheduled. The processor may have at least one cascaded delayed execution pipeline unit having two or more execution pipelines that execute instructions in a common issue group in a delayed manner relative to each other. The method includes receiving an issue group of instructions, determining if a first instruction in the issue group is a load instruction, and if so, scheduling the first instruction to be executed in a pipeline in which execution is not delayed with respect to another pipeline in the cascaded delayed execution pipeline unit.
Public/Granted literature
- US20080276079A1 MECHANISM TO MINIMIZE UNSCHEDULED D-CACHE MISS PIPELINE STALLS Public/Granted day:2008-11-06
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