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:
Dec. 10, 2002
Filed:
Jun. 18, 1998
Rahul Razdan, Princeton, MA (US);
James B. Keller, Waltham, MA (US);
Richard E. Kessler, Shrewsbury, MA (US);
Compaq Information Technologies Group, L.P., Houston, TX (US);
Abstract
According to the present invention a cache within a multiprocessor system is speculatively filled. To speculatively fill a designated cache, the present invention first determines an address which identifies information located in a main memory. The address may also identify one or more other versions of the information located in one or more caches. The process of filling the designated cache with the information is started by locating the information in the main memory and locating other versions of the information identified by the address in the caches. The validity of the information located in the main memory is determined after locating the other versions of the information. The process of filling the designated cache with the information located in the main memory is initiated before determining the validity of the information located in main memory. Thus, the memory reference is speculative.