How to pass PETSc options to PETScSNESSolver?

Question

Dear community,

I'd like to set petsc command line options for my PETScSNESSolver. However, the options are not passed to the solver. MWE:

   args = """
      --petsc.snes_monitor
      --petsc.snes_atol 0.0
      --petsc.snes_max_it 10""".split()
   parameters.parse(args)
   solver = PETScSNESSolver()
   snes = solver.snes()
   snes.setFromOptions() 
   snes.getTolerances()

gives the default settings

   (1e-08, 1e-50, 1e-08, 50)

How does it work?

Thanks!
David

edit: Actually it seems to work. Though not very well with interactive IPython sessions; once set, the options cannot be changed. That was my mistake.

Answer 1

You can also use PETScOptions, e.g.

PETScOptions().set("snes_monitor")
PETScOptions().set("snes_max_it", 10)

Comments

Great, this is much more comfortable :)
Thanks!