Visual MODFLOW Flex comes with a choice of different solvers to use in solving the numerical equations for the flow simulation:
•Algebraic Multigrid Methods for Systems (SAMG) and Algebraic Multigrid Solver (AMG) (only available with MODFLOW-2000, 2005 and MODFLOW-LGR)
These solvers and their individual settings can be accessed by selecting MODFLOW/Solver from the Run section of Visual MODFLOW Flex. A Solver Setting window will appear, similar to the image shown in the following figure, with a list for choosing the desired Solver and a listing of the settings for the selected Solver.
Please Note: the SAMG solver is available in the editions of Visual MODFLOW Flex as follows:
•Basic Edition: not available
•Professional Edition: SAMG - single core only
•Premium Edition: SAMG - multi-core/parallel processing