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FIDAP015: 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
6867 x 6867, 96421 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
96421 6867 44777 44777 0
Column Data Row Data
Average nonzeros per column : 14
Standard deviation : 4.2

indexnonzeros
longest67 18
shortest3 4

Average nonzeros per row : 14
Standard deviation : 4.2

indexnonzeros
longest67 18
shortest3 4

Bandwidths Profile Storage
lower68 upper68
average |i-j|44 std.dev.28
minmaxave.std.dev.
lower bandwidth0 67 66 6.1
upper bandwidth0 67 66 6.1

Symmetric skyline storage requirement:457420

Heaviest diagonals
offset from main0 -63 63 -3 3 -66 -60 60 66 -64
nonzeros6867 6804 6804 6540 6540 6480 6480 6480 6480 2268
accumulated percent 7.1214.1821.2428.0234.8041.5248.2454.9661.6864.03

Top 10 out of 27 nonvoid diagonals.
Conditioning
Frobenius norm6.9e+10 condition number (est.)1.43e+13
2-norm (est.)1.1e+10 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: ]