Jed, thanks for the reply...

On Sep 17, 2008, at 10:38 AM, Jed Brown wrote:
> As you may know, you can set any test you like using
> SNESSetConvergenceTest().

Right, I am hoping one day to be able to specify generic convergence  
test criteria through the NonlinearSolver interface... using Petsc's  
ConvergenceTest callback and Trilinos's built in convergence test  
capability.  We'll see.

> Also, the Eisenstat-Walker `trick' is
> implemented (see -snes_ksp_ew) to control the tolerance for the linear
> solve.

I didn't know that... I'll have to play with it.  Thank you for the  
reference!

> You can adjust linear solve parameters inside the nonlinear solve by
> manipulating the KSP in your convergence test.

Right.  This would be pretty hard to generalize though...

Thanks again,
Derek

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