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JAGMESH5: Graded L-shape patterns
+ 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
1180 x 1180, 4465 entries pattern symmetric indefinite
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
7750 1180 3285 3285 0
Column Data Row Data
Average nonzeros per column : 6.6
Standard deviation : 0.84

indexnonzeros
longest20 7
shortest10 3

Average nonzeros per row : 6.6
Standard deviation : 0.84

indexnonzeros
longest20 7
shortest10 3

Bandwidths Profile Storage
lower758 upper758
average |i-j|19 std.dev.62
minmaxave.std.dev.
lower bandwidth1 758 31 81
upper bandwidth1 758 31 81

Symmetric skyline storage requirement:36032

Heaviest diagonals
offset from main0 -1 1 -6 6 -5 5 -4 4 -7
nonzeros1180 1013 1013 286 286 234 234 182 182 163
accumulated percent15.2328.3041.3745.0648.7551.7754.7957.1459.4861.59

Top 10 out of 231 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: ]