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:
Aug. 30, 2011
Filed:
Dec. 28, 2004
Wayne Melvin Barrett, Rochester, MN (US);
David Alan Shedivy, Rochester, MN (US);
Kenneth Michael Valk, Rochester, MN (US);
Brian T. Vanderpool, Byron, MN (US);
Wayne Melvin Barrett, Rochester, MN (US);
David Alan Shedivy, Rochester, MN (US);
Kenneth Michael Valk, Rochester, MN (US);
Brian T. Vanderpool, Byron, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a shared memory architecture, early coherency indication is used to notify a communications interface, prior to the data for a memory request is returned, and prior to updating a coherency directory in response to the memory request, that the return data can be used by the communications interface when it is received thereby from a source of the return data. By doing so, the communications interface can often begin forwarding the return data over its associated communication link with little or no latency once the data is retrieved from its source. In addition, the communications interface is often no longer required to wait for updating of the coherency directory to complete prior to forwarding the return data over the communication link. As such, the overall latency for handling the memory request is typically reduced.