Matrix CAN 634

CAN 634: Structures problems in aircraft design

from set CANNES, from the Harwell-Boeing Collection

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Compressed MatrixMarket format file: can__634.mtx.gz (8384 bytes)

Compressed Harwell-Boeing format file: can__634.psa.gz (6494 bytes)

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Visualizations

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Structure Plot

Size Type

634 x 634, 3931 entries pattern symmetric indefinite

Nonzeros

total diagonal below diagonal above diagonal A-A'
7228 634 3297 3297 0

Column Data Row Data

Average nonzeros per column : 11
Standard deviation : 3.8
index nonzeros
longest 116 28
shortest 634 2
Average nonzeros per row : 11
Standard deviation : 3.8
index nonzeros
longest 116 28
shortest 634 2

Bandwidths Profile Storage

lower 540 upper 540
average |i-j| 90 std.dev. 1.4e+02

min max ave. std.dev.
lower bandwidth 1 540 1.1e+02 1.7e+02
upper bandwidth 1 540 1.1e+02 1.7e+02
Symmetric skyline storage requirement:69220

Heaviest diagonals

offset from main 0 -1 1 -6 6 -5 5 -7 7 -16
nonzeros 634 538 538 225 225 196 196 194 194 124
accumulated percent 8.77 16.21 23.66 26.77 29.88 32.60 35.31 37.99 40.68 42.39

Top 10 out of 849 nonvoid diagonals.

Conditioning

Pattern matrix. No conditioning information.

Set Information

Set CANNES
Source:	Lucien Marro, Programmation Scientifique, Aerospatiale Cannes, France.
Discipline:	Finite-element structures problems in aircraft design.
Accession:	June 3, 1981

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Last change in this page: Wed Sep 22 13:33:29 US/Eastern 2004 [Comments: ]