Matrix CAN 1054

CAN 1054: Structures problems in aircraft design

from set CANNES, from the Harwell-Boeing Collection

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Compressed MatrixMarket format file: can_1054.mtx.gz (14695 bytes)

Compressed Harwell-Boeing format file: can_1054.psa.gz (11608 bytes)

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Visualizations

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Structure Plot

Size Type

1054 x 1054, 6625 entries pattern symmetric indefinite

Nonzeros

total diagonal below diagonal above diagonal A-A'
12196 1054 5571 5571 0

Column Data Row Data

Average nonzeros per column : 12
Standard deviation : 5.6
index nonzeros
longest 414 35
shortest 42 6
Average nonzeros per row : 12
Standard deviation : 5.6
index nonzeros
longest 414 35
shortest 42 6

Bandwidths Profile Storage

lower 1031 upper 1031
average |i-j| 1.2e+02 std.dev. 1.8e+02

min max ave. std.dev.
lower bandwidth 1 1031 2.6e+02 2.5e+02
upper bandwidth 1 1031 2.6e+02 2.5e+02
Symmetric skyline storage requirement:269049

Heaviest diagonals

offset from main 0 -1 1 -2 2 -3 3 -4 4 -49
nonzeros 1054 574 574 355 355 279 279 166 166 51
accumulated percent 8.64 13.35 18.06 20.97 23.88 26.16 28.45 29.81 31.17 31.59

Top 10 out of 1215 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: ]