NNC261: Nuclear reactor models

from set NUCL, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: nnc261.mtx.gz (5625 bytes)
Compressed Harwell-Boeing format file: nnc261.rua.gz (3741 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot	City Plot
Spectral Portrait	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 177948 bytes

Matrix Statistics

Size	Type
261 x 261, 1500 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 1500 150 604 746 760
Column Data	Row Data
Average nonzeros per column : 5.7 Standard deviation : 3.2 index nonzeros longest 65 16 shortest 13 1	Average nonzeros per row : 5.7 Standard deviation : 2.5 index nonzeros longest 65 16 shortest 13 1
Bandwidths	Profile Storage
lower 65 upper 65 average |i-j| 16 std.dev. 16	min max ave. std.dev. lower bandwidth 1 65 19 19 upper bandwidth 1 65 18 19 Nonsymmetric skyline storage 9437
Heaviest diagonals
offset from main 0 3 4 5 -3 -4 2 6 -5 8 nonzeros 150 60 59 45 44 43 38 38 32 32 accumulated percent 10.00 14.00 17.93 20.93 23.87 26.73 29.27 31.80 33.93 36.07 Top 10 out of 123 nonvoid diagonals.
Conditioning
Frobenius norm 4e+03 condition number (est.) 1.2e+15 2-norm (est.) 1e+03 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:46 US/Eastern 2004 [Comments: ]