mld_mat.mtx              ! This matrix (and others) from: http://math.nist.gov/MatrixMarket/ or 
mld_rhs.mtx              ! rhs          | http://www.cise.ufl.edu/research/sparse/matrices/index.html
MM                       ! File format: MM (Matrix Market)  HB (Harwell-Boeing).
1                        ! Preconditioner choice 
0100                     ! ITMAX
1.d-6                    ! EPS