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:
Mar. 24, 2015
Filed:
Oct. 31, 2008
Takahiro Kumura, Tokyo, JP;
Takahiro Kumura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
There is provided a cache synchronization control method by which contents of a plurality of caches can be synchronized without a programmer explicitly setting a synchronization point, and the contents of the caches can be synchronized without scanning all cache blocks. A cache synchronization control method for a multiprocessor that has a plurality of processors having a cache, and a storage device shared by the plurality of processors, the method comprises: before a task is executed, a first step of writing back input data of the task to the storage device by a processor that manages the task and deleting data corresponding to the input data from its own cache by a processor other than the processor; and after the task is executed, a second step of writing back output data of the task to the storage device by a processor that has executed the task and deleting data corresponding to the output data from its own cache by a processor other than the processor.