BP 200: Original Harwell sparse matrix test collection
Simplex method basis matrix

from set SMTAPE, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: bp___200.mtx.gz (21413 bytes)
Compressed Harwell-Boeing format file: bp___200.rua.gz (15925 bytes)

Visualizations

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

Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 479097 bytes

Matrix Statistics

Size	Type
822 x 822, 3802 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 3802 2 1172 2628 7576
Column Data	Row Data
Average nonzeros per column : 4.6 Standard deviation : 3.6 index nonzeros longest 739 21 shortest 1 1	Average nonzeros per row : 4.6 Standard deviation : 11 index nonzeros longest 1 283 shortest 2 1
Bandwidths	Profile Storage
lower 777 upper 821 average |i-j| 2.8e+02 std.dev. 1.9e+02	min max ave. std.dev. lower bandwidth 0 776 1.7e+02 1.9e+02 upper bandwidth 0 820 2.5e+02 2.6e+02 Nonsymmetric skyline storage 346290
Heaviest diagonals
offset from main -181 -88 -413 -229 -465 320 -327 106 100 105 nonzeros 34 34 33 28 22 21 19 19 18 16 accumulated percent 0.89 1.79 2.66 3.39 3.97 4.52 5.02 5.52 6.00 6.42 Top 10 out of 1086 nonvoid diagonals.
Conditioning
Frobenius norm 9.9e+02 condition number (est.) 8.9e+06 2-norm (est.) 4e+02 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:52 US/Eastern 2004 [Comments: ]