Matrix GRE 185

GRE 185: Simulation of computer systems

from set GRENOBLE, from the Harwell-Boeing Collection

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Compressed MatrixMarket format file: gre__185.mtx.gz (4087 bytes)

Compressed Harwell-Boeing format file: gre__185.rua.gz (2961 bytes)

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Visualizations

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Structure Plot	City Plot

Spectral Portrait	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 120656 bytes

Size Type

185 x 185, 1005 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
975 155 495 325 1300

Column Data Row Data

Average nonzeros per column : 5.3
Standard deviation : 0.87
index nonzeros
longest 3 6
shortest 5 3
Average nonzeros per row : 5.3
Standard deviation : 0.87
index nonzeros
longest 1 6
shortest 23 3

Bandwidths Profile Storage

lower 32 upper 61
average |i-j| 22 std.dev. 15

min max ave. std.dev.
lower bandwidth 1 32 24 7.8
upper bandwidth 1 61 37 17
Nonsymmetric skyline storage 11125

Heaviest diagonals

offset from main 0 -25 -29 -20 -23 -24 -30 -28 -27 25
nonzeros 155 59 49 36 33 29 27 27 27 23
accumulated percent 15.90 21.95 26.97 30.67 34.05 37.03 39.79 42.56 45.33 47.69

Top 10 out of 88 nonvoid diagonals.

Conditioning

Frobenius norm 8 condition number (est.) 5.1e+05
2-norm (est.) 1.1 diagonal dominance no

Set Information

Set GRENOBLE
Source:	François Cachard, University of Grenoble, France.
Discipline:	Simulation studies in computer systems.
Accession:	June 3, 1981

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Last change in this page: Wed Sep 22 13:33:39 US/Eastern 2004 [Comments: ]