[petsc-users] How to change KSP tolerance during SNES steps

[behzad baghapour]

Here is my procedure:

Define:

KSP mon_ksp;
PC mon_pre;
.
.
.
if( res_n < 1e-1 && c_test == 0 )
{
        KSPGetPC  ( mon_ksp,  &mon_pre );
        ierr = PCFactorSetLevels( mon_pre, 4 ); CHKERRQ( ierr );
        KSPSetPC  ( mon_ksp,   mon_pre );
        SNESSetKSP( snes, mon_ksp );
        ierr = SNESSetUp( snes ); CHKERRQ( ierr );
        c_test = 1;
}

and did get the error: "Object is in wrong state..."
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