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:
Jul. 20, 2000
Applicant:
Inventor:
Eric C. Fromm, Eau Claire, WI (US);
Assignee:
Silicon Graphics, Inc., Mountain View, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/212 ;
U.S. Cl.
CPC ...
G06F 1/212 ;
Abstract
A method and apparatus for deallocating memory in a multi-processor, shared memory system. In one aspect, a node in the system has a node controller that contains sequencing logic. The sequencing logic receives a command across a network. The sequencing logic translates the received command into a Purge Translation Cache (PTC) instruction and sends the PTC instruction across a bus to a processor. The processor contains bus control logic that receives the PTC instruction and purges a virtual address specified in the PTC instruction from the processor's translation lookaside buffer. By purging the virtual address, the memory is deallocated.