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. 11, 2008
Filed:
Sep. 25, 2002
Toshikazu Takada, Tokyo, JP;
Kazuto Nakata, Tokyo, JP;
Tadashi Murase, Tokyo, JP;
Toshihiro Sakuma, Kawasaki, JP;
Toshikazu Takada, Tokyo, JP;
Kazuto Nakata, Tokyo, JP;
Tadashi Murase, Tokyo, JP;
Toshihiro Sakuma, Kawasaki, JP;
Japan Science and Technology Agency, Saitama, JP;
NEC Corporation, Tokyo, JP;
Abstract
A parallel computing method by using a parallel computer having a plurality of processors is provided, wherein when a 2-electron integration is transformed from an atomic-orbital base (rs|tu) to a molecular-orbital base (ab|cd), indexes r and s of an atomic orbital to be calculated are designated for the plurality of processors and each of the plurality of processors performs processing for all combinations of designated indexes R and S, and indexes t and u of the atomic orbital to be calculated. Subsequently, the grain sizes are equalized, many commodity processors can be connected with high performance, and the cost of a high-speed operation computer reduces. Further, the computer can obtain a large main-memory area, as a whole, through the use of inexpensive local memories.