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options_solver solver

You can set here the solver type to one of diagonal, matrix_iterative_bicg, matrix_iterative_petsc or matrix_superlu. The solver set here holds for the entire calculation (as opposed to the control_options_solver which only holds for the corresponding time steps). In fact, each control_options_solver will be overwritten by a specified options_solver.

You can also set an environment symbol TOCHNOG_OPTIONS_SOLVER to solver, by example to -matrix_superlu. In this way, you do not need to set the solver type in each input file separately.

tochnog 2001-09-02