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US Patent 7487296 Multi-stride prefetcher with a recurring prefetch table

Patent 7487296 was granted and assigned to Sun Microsystems on February, 2009 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
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Patent
Patent

Patent attributes

Current Assignee
Sun Microsystems
Sun Microsystems
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7487296
Patent Inventor Names
Sudarshan Kadambi3
Sorin Iacobovici3
Yuan C. Chou3
Date of Patent
February 3, 2009
Patent Application Number
11062266
Date Filed
February 17, 2005
Patent Citations Received
‌
US Patent 12013784 Prefetch state cache (PSC)
1
‌
US Patent 12013781 Processing device using variable stride pattern
2
Patent Primary Examiner
‌
Gary J Portka
Patent abstract

A multi-stride prefetcher includes a recurring prefetch table that in turn includes a stream table and an index table. The stream table includes a valid field and a tag field. The stream table also includes a thread number field to help support multi-threaded processor cores. The tag field stores a tag from an address associated with a cache miss. The index table includes fields for storing information characterizing a state machine. The fields include a learning bit. The multi-stride prefetcher prefetches data into a cache for a plurality of streams of cache misses, each stream having a plurality of strides.

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