MAN 5976: Structural engineering matrices

from set MANTEUFFEL, from the Harwell-Boeing Collection

Note: The previously available version of this matrix in Matrix Market format refects an assembly which differs from what the contributor intended and has been withdrawn. Please discard it if you have taken a copy. The Harwell-Boeing file remains, but requires proper interpretation.

Download as

Matrix Market format not available.
Compressed Harwell-Boeing format file: man_5976.pse.gz (22567 bytes)

Visualizations

Click on image to get an enlarged version. Click on label to get an explanation.

Structure Plot

Matrix Statistics

Size	Type
5976 x 5976, 15680 entries	pattern symmetric indefinite
Nonzeros
total diagonal below diagonal above diagonal A-A' 225046 5882 109582 109582 0
Column Data	Row Data
Average nonzeros per column : 38 Standard deviation : 11 index nonzeros longest 253 51 shortest 981 0	Average nonzeros per row : 38 Standard deviation : 11 index nonzeros longest 253 51 shortest 981 0
Bandwidths	Profile Storage
lower 432 upper 432 average |i-j| 1.4e+02 std.dev. 1e+02	min max ave. std.dev. lower bandwidth 0 431 2.1e+02 81 upper bandwidth 0 431 2.1e+02 81 Symmetric skyline storage requirement:1265078
Heaviest diagonals
offset from main 0 -1 1 -2 2 -3 3 -252 252 -251 nonzeros 5882 5852 5852 5822 5822 5030 5030 3986 3986 3984 accumulated percent 2.61 5.21 7.81 10.40 12.99 15.22 17.46 19.23 21.00 22.77 Top 10 out of 289 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

[ Home ] [ Search ] [ Browse ] [ Resources ]

Last change in this page: Wed Sep 22 13:33:46 US/Eastern 2004 [Comments: ]