Invention Grant
- Patent Title: Efficient multiple-table reference prediction mechanism
- Patent Title (中): 高效多表参考预测机制
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Application No.: US11457178Application Date: 2006-07-13
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Publication No.: US07657729B2Publication Date: 2010-02-02
- Inventor: Wael R. El-Essawy , Ramakrishnan Rajamony , Hazim Shafi , William E. Speight , Lixin Zhang
- Applicant: Wael R. El-Essawy , Ramakrishnan Rajamony , Hazim Shafi , William E. Speight , Lixin Zhang
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Dillon & Yudell LLP
- Main IPC: G06F9/00
- IPC: G06F9/00

Abstract:
A method and an apparatus for enabling a prefetch engine to detect and support hardware prefetching with different streams in received accesses. Multiple (simple) history tables are provided within (or associated with) the prefetch engine. Each of the multiple tables is utilized to detect different access patterns. The tables are indexed by different parts of the address and are accessed in a preset order to reduce the interference between different patterns. When an address does not fit the patterns of a first table, the address is passed to the next table to be checked for a match of different patterns. In this manner, different patterns may be detected at different tables within a single prefetch engine.
Public/Granted literature
- US20080016330A1 Efficient Multiple-Table Reference Prediction Mechanism Public/Granted day:2008-01-17
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