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:
Apr. 13, 2010
Filed:
Jan. 10, 2008
Ravi Kumar Arimilli, Austin, TX (US);
Robert Alan Cargnoni, Austin, TX (US);
Derek Edward Williams, Austin, TX (US);
Kenneth Lee Wright, Austin, TX (US);
Ravi Kumar Arimilli, Austin, TX (US);
Robert Alan Cargnoni, Austin, TX (US);
Derek Edward Williams, Austin, TX (US);
Kenneth Lee Wright, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A processor communication register (PCR) contained in each processor within a multiprocessor system provides enhanced processor communication. Each PCR stores identical processor communication information that is useful in pipelined or parallel multi-processing. Each processor has exclusive rights to store to a sector within each PCR and has continuous access to read the contents of its own PCR. Each processor updates its exclusive sector within all of the PCRs, instantly allowing all of the other processors to see the change within the PCR data, and bypassing the cache subsystem. Efficiency is enhanced within the multiprocessor system by providing processor communications to be immediately transferred into all processors without momentarily restricting access to the information or forcing all the processors to be continually contending for the same cache line, and thereby overwhelming the interconnect and memory system with an endless stream of load, store and invalidate commands.