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FIDAP028: 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
2603 x 2603, 77653 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
76903 1853 37525 37525 922
Column Data Row Data
Average nonzeros per column : 30
Standard deviation : 15

indexnonzeros
longest175 62
shortest25 8

Average nonzeros per row : 30
Standard deviation : 15

indexnonzeros
longest175 62
shortest25 8

Bandwidths Profile Storage
lower112 upper112
average |i-j|47 std.dev.34
minmaxave.std.dev.
lower bandwidth0 111 72 28
upper bandwidth0 111 72 28

Symmetric skyline storage requirement:372383

Heaviest diagonals
offset from main-2 2 -1 1 -3 3 0 -4 4 -5
nonzeros2180 2180 2005 2005 1940 1940 1853 1444 1444 1029
accumulated percent 2.83 5.67 8.2810.8813.4115.9318.3420.2222.0923.43

Top 10 out of 177 nonvoid diagonals.
Conditioning
Frobenius norm5.8e+02 condition number (est.)4.30e+05
2-norm (est.)92 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 13:34:02 US/Eastern 2004 [Comments: ]