solver parameter options

[Hasupama]

Hi,

When I used the following parameters to solve a time dependent problem, it is very slow. When I added "ksp_type": "gmres","pc_type": "hypre",, it is fast , but the answer is incorrect.

I want to find other parameters (instead of "ksp_type": "gmres","pc_type": "hypre", )that I can try with.

Is there any command which gives possible parameters?

Appreciate any comments.

solver_phi_parameters ={"snes_type": 'vinewtonrsls',"snes_linesearch_type": 'basic',#"ksp_type": "gmres","pc_type": "hypre",
			   "pc_factor_mat_solver_type": "mumps",
                          "snes_rtol": 1.e-4,
                          "snes_atol": 1.e-3,  
                     	 "maximum_iterations": 100,
                    		"report": True,
                     	 	"error_on_nonconvergence": True,
                     	 									 }
`