GENT113: Original Harwell sparse matrix test collection
statistical application

from set SMTAPE, from the Harwell-Boeing Collection

Due to Morven Gentleman, summer 1973

Download as

Compressed MatrixMarket format file: gent113.mtx.gz (1516 bytes)
Compressed Harwell-Boeing format file: gent113.pua.gz (1024 bytes)

Visualizations

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

Structure Plot

Matrix Statistics

Size	Type
113 x 113, 655 entries	pattern unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 655 90 343 222 1066
Column Data	Row Data
Average nonzeros per column : 5.8 Standard deviation : 5.6 index nonzeros longest 14 27 shortest 1 1	Average nonzeros per row : 5.8 Standard deviation : 4.6 index nonzeros longest 23 20 shortest 1 1
Bandwidths	Profile Storage
lower 102 upper 96 average |i-j| 38 std.dev. 32	min max ave. std.dev. lower bandwidth 0 101 26 35 upper bandwidth 0 95 17 27 Nonsymmetric skyline storage 4739
Heaviest diagonals
offset from main 0 -9 -2 3 6 -4 -3 -1 5 7 nonzeros 90 24 14 12 12 11 10 10 8 8 accumulated percent 13.74 17.40 19.54 21.37 23.21 24.89 26.41 27.94 29.16 30.38 Top 10 out of 149 nonvoid diagonals.
Conditioning
Pattern matrix. No conditioning information.

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Last change in this page: Wed Sep 22 13:33:51 US/Eastern 2004 [Comments: ]