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. 26, 2008
Filed:
Jan. 18, 2007
Dae Ik Kim, Fishkill, NY (US);
Jonghae Kim, Fishkill, NY (US);
Moon J Kim, Wappingers Fall, NY (US);
James R Moulic, Poughkeepsie, NY (US);
Dae Ik Kim, Fishkill, NY (US);
Jonghae Kim, Fishkill, NY (US);
Moon J Kim, Wappingers Fall, NY (US);
James R Moulic, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Systems, methods and program codes are provided for testing multi-core processor chip structures. Individual processor core power supply voltages are provided through controlling individual power supplies for each core, in one aspect to ensure that one or more cores operate at clock rates in compliance with one or more performance specifications. In one example, a first power supply voltage supplied to a first processing core differs from a second core power supply voltage supplied to a second processing core, both cores operating in compliance with a reference clock rate specification. Core power supply voltages may be selected from ordered discrete supply voltages derived by progressively raising or lowering a first supply voltage, optionally wherein the selected supply voltage also enables the core to operate within another performance specification.