[firedrake] Error - NonlinearVariationalSolver

[Lawrence Mitchell]

Hi Anna,

On 10 Nov 2014, at 19:39, Anna Kalogirou <a.kalogirou at leeds.ac.uk> wrote:

> Hi Lawrence,
> 
> Does it matter that I am solving a linear problem with the nonlinear solver? I am just trying to reproduce the linear one that works first, before introducing the nonlinear terms. I tried also adding the parameter {'snes_type': 'ksponly'} and the code works, but the result is not as good.
> 
> Do you have any idea what might be happening?
> 
> P.S. The linear code can be found attached.


Thanks, I think I have found the problem, it is not in your code.  The problem appears to be a subtle issue in which we interact with PETSc, which means that it is not computing the initial residual correctly.  I will prepare a fix tomorrow and let you know when things are fixed.

Cheers,

Lawrence
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