Matrix QH768

QH768: Quebec Hydroelectric Power System

from set QUEBEC, from the NEP Collection

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Compressed MatrixMarket format file: qh768.mtx.gz (13954 bytes)

Compressed Harwell-Boeing format file: qh768.rua.gz (11889 bytes)

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Visualizations

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Structure Plot	City Plot

	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 348336 bytes

Size Type

768 x 768, 2934 entries real unsymmetric

Nonzeros

total diagonal below diagonal above diagonal A-A'
2934 452 1298 1184 2644

Column Data Row Data

Average nonzeros per column : 3.8
Standard deviation : 1.6
index nonzeros
longest 493 11
shortest 672 1
Average nonzeros per row : 3.8
Standard deviation : 1.6
index nonzeros
longest 493 10
shortest 670 1

Bandwidths Profile Storage

lower 489 upper 489
average |i-j| 1.6e+02 std.dev. 1.9e+02

min max ave. std.dev.
lower bandwidth 0 488 1.2e+02 1.8e+02
upper bandwidth 0 488 1.1e+02 1.8e+02
Nonsymmetric skyline storage 177598

Heaviest diagonals

offset from main 0 -1 1 -2 -4 2 -484 484 -480 -478
nonzeros 452 396 378 62 38 38 28 28 22 22
accumulated percent 15.41 28.90 41.79 43.90 45.19 46.49 47.44 48.40 49.15 49.90

Top 10 out of 344 nonvoid diagonals.

Conditioning

Frobenius norm 2.5e+13 condition number (est.) 1.3e+17
2-norm (est.) 1.4e+13 diagonal dominance no

Set Information

Set QUEBEC
Source:	Deo Ndereyimana, Quebec, Canada
Discipline:	Power systems simulations

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Last change in this page: Wed Sep 22 13:37:27 US/Eastern 2004 [Comments: ]