[petsc-users] preconditioning with Matrix-Free SNES

[Jed Brown]

On Tue, Jun 12, 2012 at 10:50 AM, behzad baghapour <
behzad.baghapour at gmail.com> wrote:

> Since the option "-snes_mf" does not call FormJacobian, then how I should
> set the required preconditioning matrix in the procedure of matrix-free
> SNES?


Use -snes_mf_operator instead of -snes_mf
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