Matrix Set NUCL

NUCL: Nuclear reactor models

from the Harwell-Boeing Collection

Set NUCL
Source:	National Nuclear Corporation
Discipline:	Nuclear reactor modeling
Accession:	Spring 1982

These three matrices are derived from models of an advanced gas cooled reactor core, from the National Nuclear Corp. (UK). Their particular interest is the significant difference in factorization time between the original matrices and their transposes.

Performance statistics from a CRAY-1S, CFT 1.09, for solution of a single right-hand side (times in CPU seconds)

MA18 MA28
Order A transpose(A) A transpose(A)
261 1.3 1.3 .5

666 14.3 16.6 13.8 5.0

MA18	MA28
Order	A	transpose(A)	A	transpose(A)
261	1.3		1.3	.5
666	14.3	16.6	13.8	5.0

Matrices in this set:

NNC261 (real unsymmetric, 261 by 261, 1500 entries)
NNC666 (real unsymmetric, 666 by 666, 4044 entries)
NNC1374 (real unsymmetric, 1374 by 1374, 8606 entries)
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Last change in this page: Wed Sep 22 13:33:47 US/Eastern 2004 [Comments: ]