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GRE 216B: Simulation of computer systems

from set GRENOBLE, from the Harwell-Boeing Collection

[Download] [Visualizations] [Matrix Statistics] [Set Information]


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Visualizations

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Structure Plot City Plot
structure plot city plot
Spectral Portrait 3D Interactive City Plot
spectral portrait

[ VRML Version 2, gzipped ] 103651 bytes


Matrix Statistics

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Size Type
216 x 216, 876 entries real unsymmetric
Nonzeros
totaldiagonalbelow diagonalabove diagonalA-A'
812 152 480 180 1320
Column Data Row Data
Average nonzeros per column : 3.8
Standard deviation : 0.47

indexnonzeros
longest6 4
shortest1 2

Average nonzeros per row : 3.8
Standard deviation : 0.47

indexnonzeros
longest6 4
shortest1 2

Bandwidths Profile Storage
lower15 upper37
average |i-j|12 std.dev.10
minmaxave.std.dev.
lower bandwidth1 15 11 3.3
upper bandwidth1 37 24 13

Nonsymmetric skyline storage 7346

Heaviest diagonals
offset from main0 -12 -10 -11 -9 -13 -8 -7 -6 36
nonzeros152 70 64 62 58 50 36 36 30 24
accumulated percent18.7227.3435.2242.8650.0056.1660.5965.0268.7271.67

Top 10 out of 29 nonvoid diagonals.
Conditioning
Frobenius norm14 condition number (est.)8.1e+14
2-norm (est.)1.4 diagonal dominanceno


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: ]