Parallel Algebraic Multigrid (PMG)

Numerically approximates the solutions of linear and nonlinear elliptic partial differential equations in three-dimensional (logically) brick-like domains in an efficient and robust way. PMG employs a non-uniform Cartesian mesh of the user's choice, box-methods or finite element methods for discretization, algebraic (or geometric) construction of lower-dimensional subspace problems, damped-inexact Global Newton methods for nonlinearities, and a jacobian multilevel iteration based on the algebraic (or geometric) subspace hierarchy. There is a sequential Fortran 77 version and a parallel C++ version. By Michael Holst.