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:
May. 28, 1996
Filed:
Aug. 11, 1993
Shigeaki Iwasa, Kanagawa-ken, JP;
Takashi Omizo, Saitama-ken, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A distributed shared-memory multiprocessor system capable of reducing a traffic on the shared bus, without imposing any constraint concerning the types of variables to be accessed in the parallel programs, such that a high system extensibility can be realized. The system is formed by a plurality of processor units coupled through a shared bus, where each processor unit comprises: a CPU; a main memory connected with the CPU through an internal bus, for storing a distributed part of data entries of a shared-memory of the system; a cache memory associated with the CPU and connected with the main memory through the internal bus, for caching selected data entries of the shared-memory; and a sharing management unit connected with the main memory and the cache memory through the internal bus, For interfacing the internal bus and the shared bus according to a sharing state for each data entry of the main memory and a cache state of each data entry of the cache memory.