Directory:
    ${PENCIL_HOME}/samples/multigrid
SVN Id:
    $Id$
Maintainer:
Added:
    04-Aug-2003
Status:
    has been working since August 2007
Recommended resolution:
    no constraints
Comments:
    This is to test the multigrid solver.
    It works only on one processor.
    No time evolution is needed, so only start.in exists here.
    A sample output is in the file reference.out
References:
    Numerical recipes