Schenk: IBM TJ Watson, Yorktown, nonlinear optimization
Name c-68
Group GHS_indef
Matrix ID 1225
Num Rows 64,810
Num Cols 64,810
Nonzeros 565,996
Pattern Entries 566,006
Kind Optimization Problem
Symmetric Yes
Date 2004
Author IBM
Editor O. Schenk
Structural Rank 64,810
Structural Rank Full true
Num Dmperm Blocks 6
Strongly Connect Components 6
Num Explicit Zeros 10
Pattern Symmetry 100%
Numeric Symmetry 100%
Cholesky Candidate no
Positive Definite no
Type real
Download MATLAB Rutherford Boeing Matrix Market
Revised Nov 2006; relative eps changes to A, right-hand-side added.
Note that this matrix should have been placed in the Schenk_IBMNA/ 
directory when it was first added in August 2004, but moving it now
would disrupt exising users of the collection.