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FIDAP004: Matrices generated by the FIDAP Package

from set FIDAP, from the SPARSKIT Collection

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Visualizations

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Structure Plot City Plot
structure plot city plot


Matrix Statistics

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Size Type
1601 x 1601, 32287 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
31837 1151 15343 15343 0
Column Data Row Data
Average nonzeros per column : 20
Standard deviation : 7.9

indexnonzeros
longest93 37
shortest1598 6

Average nonzeros per row : 20
Standard deviation : 7.9

indexnonzeros
longest93 37
shortest1598 6

Bandwidths Profile Storage
lower113 upper113
average |i-j|46 std.dev.33
minmaxave.std.dev.
lower bandwidth0 112 73 28
upper bandwidth0 112 73 28

Symmetric skyline storage requirement:119229

Heaviest diagonals
offset from main-2 2 0 -4 4 -3 3 -5 5 -108
nonzeros1346 1346 1151 793 793 734 734 555 555 511
accumulated percent 4.23 8.4612.0714.5617.0519.3621.6623.4125.1526.76

Top 10 out of 185 nonvoid diagonals.
Conditioning
Frobenius norm16 condition number (est.)5.17e+03
2-norm (est.)1.6 diagonal dominanceno


Set Information

Set FIDAP
Source: Isaac Hasbani (Fluid Dynamics International) Barry Rackner (Minnesota Supercomputer Center)
Discipline:Finite element modeling


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Last change in this page: Wed Sep 22 13:34:01 US/Eastern 2004 [Comments: ]