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. 04, 1995
Filed:
Jan. 14, 1994
Lucina L Green, Verbank, NY (US);
Peter H Gum, Poughkeepsie, NY (US);
Roger E Hough, Stormville, NY (US);
Sandra L Rankin, Stormville, NY (US);
Stephen J Schmandt, Tokyo, JP;
Ronald M Smith, Sr, Wappingers Falls, NY (US);
Vincent A Spano, Poughkeepsie, NY (US);
Phil C Yeh, Poughkeepsie, NY (US);
Devon S Yu, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system and method for dispatching logical central processing units (CPUs) among physical CPUs in a multiprocessor computer system having multiple logical partitions, wherein the cryptographic facilities may not be interchangeable. According to the present invention, the logical CPUs are dispatched among the physical CPUs according to either an affinity, floating, or disabled scheduling method. The affinity scheduling method is used when the crypto facilities are not interchangeable or when non-interchangeable crypto functions are performed. The floating scheduling method is used when the cryptographic facilities are interchangeable and interchangeable crypto functions are performed. The disabled scheduling method is used when the logical CPU is not authorized to issue cryptographic instructions.