The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2007
Filed:
Dec. 17, 2004
Ronald Edward Fuhs, Rochester, MN (US);
Ryan Scott Haraden, Rochester, MN (US);
Nathaniel Paul Sellin, Rochester, MN (US);
Scott Michael Willenborg, Stewartville, MN (US);
Ronald Edward Fuhs, Rochester, MN (US);
Ryan Scott Haraden, Rochester, MN (US);
Nathaniel Paul Sellin, Rochester, MN (US);
Scott Michael Willenborg, Stewartville, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Concurrent read access and exclusive write access are provided in a shared memory architecture to permit one or more devices in the shared memory architecture to maintain read access to a block of memory such as a cache line while one device has exclusive permission to modify that block of memory. By doing so, a device that has permission to modify may make updates to its copy of the block of memory without invalidating other copies of the block of memory, and potentially enabling other devices to continue to read data from their respective copies of the block of memory without having to retrieve the updated copy of the block of memory.