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JAGMESH6: Graded L-shape patterns
H shaped domain

from set JAGMESH, from the Harwell-Boeing Collection

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Visualizations

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Structure Plot
structure plot

Matrix Statistics

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Size Type
1377 x 1377, 5185 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
8993 1377 3808 3808 0
Column Data Row Data
Average nonzeros per column : 6.5
Standard deviation : 0.87

indexnonzeros
longest10 7
shortest1 3

Average nonzeros per row : 6.5
Standard deviation : 0.87

indexnonzeros
longest10 7
shortest1 3

Bandwidths Profile Storage
lower332 upper332
average |i-j|13 std.dev.28
minmaxave.std.dev.
lower bandwidth1 332 22 36
upper bandwidth1 332 22 36

Symmetric skyline storage requirement:30129
Heaviest diagonals
offset from main0 -1 1 -5 5 -4 4 -6 -3 3
nonzeros1377 1173 1173 342 342 266 266 190 190 190
accumulated percent15.3128.3641.4045.2049.0051.9654.9257.0359.1561.26

Top 10 out of 167 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

Set Information

Set JAGMESH
Source: Alan George, University of Waterloo, Canada.
Discipline:Finite-element model problem
Accession:January 1978

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Last change in this page: Wed Sep 22 13:33:40 US/Eastern 2004 [Comments: ]