Matrix GRE 343

GRE 343: Simulation of computer systems

from set GRENOBLE, from the Harwell-Boeing Collection

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Compressed MatrixMarket format file: gre__343.mtx.gz (4951 bytes)

Compressed Harwell-Boeing format file: gre__343.rua.gz (4181 bytes)

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Visualizations

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Structure Plot	City Plot

Spectral Portrait	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 166073 bytes

Size Type

343 x 343, 1435 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
1310 218 798 294 2184

Column Data Row Data

Average nonzeros per column : 3.8
Standard deviation : 0.41
index nonzeros
longest 6 4
shortest 1 2
Average nonzeros per row : 3.8
Standard deviation : 0.41
index nonzeros
longest 6 4
shortest 1 2

Bandwidths Profile Storage

lower 19 upper 50
average |i-j| 16 std.dev. 14

min max ave. std.dev.
lower bandwidth 1 19 14 4.4
upper bandwidth 1 50 33 17
Nonsymmetric skyline storage 15951

Heaviest diagonals

offset from main 0 -14 -17 -16 -15 -13 -11 -10 -12 -7
nonzeros 218 106 100 84 74 68 52 52 50 38
accumulated percent 16.64 24.73 32.37 38.78 44.43 49.62 53.59 57.56 61.37 64.27

Top 10 out of 36 nonvoid diagonals.

Conditioning

Frobenius norm 9.7 condition number (est.) 2.5e+02
2-norm (est.) 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 13:33:40 US/Eastern 2004 [Comments: ]