FS 541 4: 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_4.mtx.gz (44578 bytes)
Compressed Harwell-Boeing format file: fs_541_4.rua.gz (39568 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 ] 137387 bytes

Matrix Statistics

Size	Type
541 x 541, 4285 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 4273 541 1656 2076 4914
Column Data	Row Data
Average nonzeros per column : 7.9 Standard deviation : 23 index nonzeros longest 541 535 shortest 484 4	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 175884
Heaviest diagonals
offset from main 0 3 -3 1 108 216 -216 -162 -108 -1 nonzeros 541 307 306 217 217 217 216 216 216 216 accumulated percent 12.66 19.85 27.01 32.09 37.16 42.24 47.30 52.35 57.41 62.46 Top 10 out of 544 nonvoid diagonals.
Conditioning
Frobenius norm 1.6e+06 condition number (est.) 2.9e+11 2-norm (est.) 1.6e+06 diagonal dominance no

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