[petsc-dev] SNESNONE type for nonlinear preconditioner?

[Geoff Oxberry]

I saw Peter's talk at SIAM CSE 2013 and thought nonlinear preconditioning
looked really cool; now I have a problem where I want to try it out. I've
looked at snes/ex35, and it looks like adding one from options would
involve:

- calling SNESGetNPC to associate the nonlinear preconditioner SNES with an
outer SNES solver
- calling SNESSetType on the nonlinear preconditioner to set some default
value
- calling SNESGetFromOptions to set a new nonlinear preconditioner from
options (if available)

What if I want that nonlinear preconditioner to do nothing by default? Is
there an SNESNONE, comparable to PCNONE?

-- 
Geoffrey Oxberry, Ph.D., E.I.T.
goxberry at gmail.com
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