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. 05, 2002
Filed:
Aug. 22, 2000
Applicant:
Inventors:
Paul M. Goodwin, Littleton, MA (US);
Stephen Van Doren, Northborough, MA (US);
Assignee:
Compaq Information Technologies Group, L.P., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/208 ;
U.S. Cl.
CPC ...
G06F 1/208 ;
Abstract
Data coherency in a multiprocessor system is improved and data latency minimized through the use of data mapping “fill” requests from any one of the multiprocessor CPUs such that the information requested is acquired through the crossbar switch from the same memory module to which the “victim” data in that CPU's cache must be rewritten. With such an arrangement rewrite latency periods for victim data within the crossbar switch is minimized and the 'ships crossing in the night' problem is avoided.