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:
Mar. 06, 2012
Filed:
Apr. 07, 2009
Ravi K. Arimilli, Austin, TX (US);
Guy L. Guthrie, Austin, TX (US);
Robert A. Cargnoni, Austin, TX (US);
William J. Starke, Round Rock, TX (US);
Derek E. Williams, Austin, TX (US);
Ravi K. Arimilli, Austin, TX (US);
Guy L. Guthrie, Austin, TX (US);
Robert A. Cargnoni, Austin, TX (US);
William J. Starke, Round Rock, TX (US);
Derek E. Williams, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A data processing system includes an interconnect fabric, a system memory coupled to the interconnect fabric and including a virtual barrier synchronization region allocated to storage of virtual barrier synchronization registers (VBSRs), and a plurality of processing units coupled to the interconnect fabric and operable to access the virtual barrier synchronization region of the system memory. Each of the plurality of processing units includes a processor core and a cache memory including a cache array that caches VBSR lines from the virtual barrier synchronization region of the system memory and a cache controller. The cache controller, responsive to a store request from the processor core to update a particular VBSR line, performs a non-blocking update of the cache array in each other of the plurality of processing units contemporaneously holding a copy of the particular VBSR line by transmitting a VBSR update command on the interconnect fabric.