The Matrix Market

Home Search Browse Resources

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

from set SAYLOR, from the Harwell-Boeing Collection

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

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

Help: My browser can't read the compressed data files. What now?


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

Structure Plot City Plot
structure plot city plot
3D Interactive City Plot

[ VRML Version 2, gzipped ] 137741 bytes

Matrix Statistics

Click on label to get an explanation.

Size Type
238 x 238, 1128 entries real unsymmetric
totaldiagonalbelow diagonalabove diagonalA-A'
1128 238 445 445 314
Column Data Row Data
Average nonzeros per column : 4.7
Standard deviation : 0.48

longest16 5
shortest1 3

Average nonzeros per row : 4.7
Standard deviation : 0.48

longest16 5
shortest1 3

Bandwidths Profile Storage
lower15 upper15
average |i-j|6
lower bandwidth1 15 14 3.1
upper bandwidth1 15 14 3.1

Symmetric skyline storage requirement:6536

Heaviest diagonals
offset from main0 -14 14 -1 1
nonzeros238 224 224 221 221
accumulated percent21.1040.9660.8280.41100.00

Top 5 out of 5 nonvoid diagonals.
Frobenius norm8.9e+08 condition number (est.)1.6e+09
2-norm (est.)4.8e+08 diagonal dominanceno

Set Information

Source: Richard Kendall, Don Peaceman, Herb Stone, and Bill Watts, Exxon
Discipline:Oil reservoir modeling
Accession:Summer 1984

The Matrix Market is a service of the Mathematical and Computational Sciences Division / Information Technology Laboratory / National Institute of Standards and Technology.

[ Home ] [ Search ] [ Browse ] [ Resources ]

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