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. 05, 2003
Filed:
Jun. 29, 2000
Charles P. Ryan, Phoenix, AZ (US);
Eric E. Conway, Mesa, AZ (US);
Bull HN Information Systems Inc., Billerica, MA (US);
Abstract
In a Cache-Coherent Non-Uniform Memory Architecture (CC-NUMA), the time as measured in cycles that it takes for cache control signals to travel between processors ( ) sharing an L2 cache ( ) differs from the time it takes for those signals to travel between processors ( ) not sharing the same L2 cache ( ). This difference, or DELTA, is dynamically computed by computing ( ) the time it takes for a invalidate cache line cache command to travel between a local processor ( ) and a master processor ( ). This computation ( ) is then made for the time it takes the signal to travel between a remote processor ( ) and the master processor ( ). The difference ( ) is the DELTA value in cycles. This DELTA value can then be utilized to bias delay values when exhaustively testing the interactions among multiple processors in a CC-NUMA environment ( ).