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. 31, 2004
Filed:
Mar. 29, 2001
Steven Robert Farago, Austin, TX (US);
Liang-Haw Leu, Austin, TX (US);
Lawrence Allyn McConville, Austin, TX (US);
Kenneth Lee Wright, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and method for verifying cache coherency in a multi-node, NUMA system includes a transaction modification unit configured to receive event traces generated by a simulation tool. The modification unit modifies transactions that are propagated to another node in the NUMA system and thus result in two bus transactions, a home node transaction (HNT) and a foreign node transaction (FNT). More specifically, the modification unit merges a FNT and its corresponding HNT into a single merge transaction (MT) under a prescribed set of merging rules. The MT has properties of the both the FNT and the HNT. The FNT and HNT are deleted from the event trace and replaced by their corresponding MT to create a modified event trace that is suitable for coherency checking by a single system coherency checker.