SHL 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: shl__200.mtx.gz (7730 bytes)
Compressed Harwell-Boeing format file: shl__200.rua.gz (6194 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 ] 208575 bytes

Matrix Statistics

Size	Type
663 x 663, 1726 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 1726 6 226 1494 3440
Column Data	Row Data
Average nonzeros per column : 2.6 Standard deviation : 0.89 index nonzeros longest 5 4 shortest 1 1	Average nonzeros per row : 2.6 Standard deviation : 17 index nonzeros longest 1 440 shortest 4 1
Bandwidths	Profile Storage
lower 539 upper 662 average |i-j| 2.4e+02 std.dev. 1.6e+02	min max ave. std.dev. lower bandwidth 0 538 1.1e+02 2e+02 upper bandwidth 0 661 2.9e+02 2.1e+02 Nonsymmetric skyline storage 264818
Heaviest diagonals
offset from main -534 188 187 182 189 185 190 183 126 186 nonzeros 112 43 40 32 32 30 30 27 26 26 accumulated percent 6.49 8.98 11.30 13.15 15.01 16.74 18.48 20.05 21.55 23.06 Top 10 out of 634 nonvoid diagonals.
Conditioning
Frobenius norm 9.4e+03 condition number (est.) 2e+07 2-norm (est.) 9.4e+03 diagonal dominance no

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