MGLAB.FOR is a tutorial multigrid program. It solves elliptic boundary values in one dimension. The user may choose various multigrid cycles, transfer operators, smoothing methods, and nested iteration end defect correction. Cell-centered and vertex-centered discretization and multigrid is included. Documentation is included in the program. The program is written in portable FORTRAN-77, and has run on MS-DOS PC's and Unix mainframes. The methods used are fully described in the following book: An Introduction to Multigrid Methods, Wiley, Chichester, 1992 by P.Wesseling.

• MGLAB.FOR is the FORTRAN source of the tutorial multigrid program.
• MGLAB.DAT is an example of an input file.
• MGLAB.RES is the corresponding output.

Look at the readme file from the program.