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.

Date of Patent:
Aug. 04, 2015

Filed:

May. 02, 2013
Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Hiroshi Uchigaito, Kodaira, JP;

Kenzo Kurotsuchi, Kodaira, JP;

Seiji Miura, Hachioji, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/26 (2006.01); G11C 7/10 (2006.01); G06F 12/08 (2006.01);
U.S. Cl.
CPC ...
G11C 7/1072 (2013.01); G06F 12/08 (2013.01);
Abstract

An information processor includes an information processing sub-system having information processing circuits and a memory sub-system performing data communication with the information processing sub-systems, wherein the memory sub-system has a first memory, a second memory, a third memory having reading and writing latencies longer than those of the first memory and the second memory, and a memory controller for controlling data transfer among the first memory, the second memory and the third memory; graph data is stored in the third memory; the memory controller analyzes data blocks serving as part of the graph data, and performs preloading operation repeatedly to transfer the data blocks to be required next for the execution of the processing from the third memory to the first memory or the second memory on the basis of the result of the analysis.


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