SAYLR1: Saylor's petroleum engineering/reservoir simulation matrices
2D reservior (14x17)

from set SAYLOR, from the Harwell-Boeing Collection

A small linear system of 238 unknowns resulting from a 2D reservoir simulation based on field data. It is a simple problem and is used as a baseline comparison in Saylor's work.

Download as

Compressed MatrixMarket format file: saylr1.mtx.gz (7426 bytes)
Compressed Harwell-Boeing format file: saylr1.rua.gz (6358 bytes)

Visualizations

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

Structure Plot	City Plot
	3D Interactive City Plot
	[ VRML Version 2, gzipped ] 137741 bytes

Matrix Statistics

Size	Type
238 x 238, 1128 entries	real unsymmetric
Nonzeros
total diagonal below diagonal above diagonal A-A' 1128 238 445 445 314
Column Data	Row Data
Average nonzeros per column : 4.7 Standard deviation : 0.48 index nonzeros longest 16 5 shortest 1 3	Average nonzeros per row : 4.7 Standard deviation : 0.48 index nonzeros longest 16 5 shortest 1 3
Bandwidths	Profile Storage
lower 15 upper 15 average |i-j| 6 std.dev. 6.5	min max ave. std.dev. lower bandwidth 1 15 14 3.1 upper bandwidth 1 15 14 3.1 Symmetric skyline storage requirement:6536
Heaviest diagonals
offset from main 0 -14 14 -1 1 nonzeros 238 224 224 221 221 accumulated percent 21.10 40.96 60.82 80.41 100.00 Top 5 out of 5 nonvoid diagonals.
Conditioning
Frobenius norm 8.9e+08 condition number (est.) 1.6e+09 2-norm (est.) 4.8e+08 diagonal dominance no

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Last change in this page: Wed Sep 22 13:33:50 US/Eastern 2004 [Comments: ]