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:
Oct. 01, 2013
Filed:
Aug. 27, 2008
Shinichiro Tago, Kawasaki, JP;
Atsuhiro Suga, Kawasaki, JP;
Shinichiro Tago, Kawasaki, JP;
Atsuhiro Suga, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
According to one aspect of embodiments, a multiprocessor system includes a cache memory corresponding to each of the processors, a hierarchy setting register in which the hierarchical level of each cache memory is set, an access control unit that controls access between each cache memory. The hierarchical level of the cache memory for each processor is stored in a rewritable hierarchy setting register. Each processor handles a cache memory corresponding to another processor as the cache memory having a deeper hierarchy than the cache memory corresponding to the each processor. As the result, each processor can access all the cache memories, and therefore the efficiency of cache memory utilization can be improved and the hierarchical level can be set so that the latency becomes optimal for each application.