FASP methods for fleXible and eXtensible solver development.

The FASP package is designed for developing and testing new efficient solvers and preconditioners for discrete partial differential equations (PDEs) or systems of PDEs. The main components of the package are standard Krylov methods, algebraic multigrid methods, and incomplete factorization methods. Based on these standard techniques, we build efficient solvers, based on the framework of Auxiliary Space Preconditioning, for several complicated applications.

The FASP preconditioners for fluid problems.

The CPR preconditioners for FIM discrete problems in porous media flow.