FS 541 2: Original Harwell sparse matrix test collection
one stage of FACSIMILE stiff ordinary differential equation (ODE) package, for atmospheric pollution problem, involving chemical kinetics and two-dimensional transport

from set SMTAPE, from the Harwell-Boeing Collection

Download as

Compressed MatrixMarket format file: fs_541_2.mtx.gz (44709 bytes)
Compressed Harwell-Boeing format file: fs_541_2.rua.gz (39838 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 ] 136831 bytes

Matrix Statistics

Size	Type
541 x 541, 4285 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 4282 541 1656 2085 4926
Column Data	Row Data
Average nonzeros per column : 7.9 Standard deviation : 23 index nonzeros longest 541 538 shortest 109 5	Average nonzeros per row : 7.9 Standard deviation : 1.9 index nonzeros longest 59 11 shortest 541 1
Bandwidths	Profile Storage
lower 379 upper 541 average |i-j| 1.3e+02 std.dev. 1.4e+02	min max ave. std.dev. lower bandwidth 0 378 1.6e+02 1.6e+02 upper bandwidth 0 540 1.7e+02 1.6e+02 Nonsymmetric skyline storage 176199
Heaviest diagonals
offset from main 0 3 -3 1 54 108 216 -216 -162 -108 nonzeros 541 307 306 217 217 217 217 216 216 216 accumulated percent 12.63 19.80 26.95 32.02 37.09 42.15 47.22 52.27 57.31 62.35 Top 10 out of 547 nonvoid diagonals.
Conditioning
Frobenius norm 1.7e+06 condition number (est.) 7.7e+11 2-norm (est.) 1.7e+06 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:53 US/Eastern 2004 [Comments: ]