Using the optimizer

To obtain a usable FORTRAN-77 subroutine, from a description of the sparsity pattern for some system, one must go thru the following steps:

1.

Specify the system structure

2.

Run the optimqr program to find a good row and column ordering

3.

Run the codegen.pl program to generate the actual FORTRAN-77 code

4.

Verify the result using the regress program.

These steps are described in the following sections.