Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2011-01-18
2011-01-18
Bullock, Jr., Lewis A (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S495000, C709S201000
Reexamination Certificate
active
07873688
ABSTRACT:
A computer system execute summation processing even if the computing sequence is not adhered to in a system for computing a sum of floating point data of a plurality of nodes. Each node sends floating point data to a reduction mechanism, and the reduction mechanism computes the sums only for a group of which exponent sections have a highest value and a group of which exponent sections have a second highest value, and adds the sum of the group of which the exponent sections have a highest value and the sum of the group of which the exponent sections have a second highest value. By this, the consistency of the computation result can be guaranteed even if the sum is computed regardless the computing sequence of the values.
REFERENCES:
patent: 4054787 (1977-10-01), Pos
patent: 5117384 (1992-05-01), Drehmel et al.
patent: 5359548 (1994-10-01), Yoshizawa et al.
patent: 2002/0184285 (2002-12-01), Pangal et al.
patent: 2003/0154227 (2003-08-01), Howard et al.
patent: 2004/0073590 (2004-04-01), Bhanot et al.
patent: 2004/0103218 (2004-05-01), Blumrich et al.
patent: 02-085922 (1990-03-01), None
patent: 2005-506596 (2005-03-01), None
patent: 02/069177 (2002-09-01), None
Author: Demmel et al.; Title: “Accurate floating point summation”; Date: May 8, 2002; URL: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.3.2079.
Author: Almási et al.; Title: “Optimization of MPI collective communication on BlueGene/L systems”; Date: Jun. 22, 2005; URL: http://portal.acm.org/citation.cfm?id=1088149.1088183.
Author: Wikipedia; Title: “Multi-core processor”; Date: Feb. 20, 2006; URL: http://en.wikipedia.org/w/index.php?title=Multi-core—processor&oldid=40440761.
Chinese Office Action issued on Jun. 19, 2009 in corresponding Chinese Patent Application 200610107805.1.
Extended European Search Repot issued Sep. 1, 2008 in corresponding European Patent Application No. 06253422.7.
Inagaki Jun-ichi
Ishihata Hiroaki
Koyabu Masao
Bullock, Jr. Lewis A
Fujitsu Limited
Kelly Joseph
Staas & Halsey , LLP
LandOfFree
Processing method and computer system for summation of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Processing method and computer system for summation of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processing method and computer system for summation of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2622802