Selecting a Sparse Solver and Preconditioner
Selecting the "best" sparse iterative solver and preconditioner is often a difficult decision. Very rarely can one simply know which combination will converge quickest to find a solution within the given constraints. Often the best answer requires knowledge pertaining to the structure of the matrix and the properties it exhibits. To help aid in the selection of a solver and preconditioner, we have constructed some flow charts to help gauge which solver and preconditioner might work best. Again, since there is no correct answer for a given system, we encourage users to experiment with different solvers, preconditioners, and options. These charts are only designed to give suggestions, and not absolute answers.
Selecting an appropriate solver in CULA Sparse.
Selecting a high performance preconditioner in CULA Sparse.