Hello Wolfgang,

Ok, good. The commit is fine. I'll see if I can pinpoint the exact cause of 
segmentation faults.
One more question, in fact a small inconsistency that is of my interest: 
the function VectorTools::interpolate_boundary_values is not templated for 
the generic Number type but for double only (argument 
std::map<types::global_dof_index,double>& boundary_values). Is there a 
reason for that?


On Wednesday, September 14, 2016 at 1:37:05 PM UTC+1, Wolfgang Bangerth 
> Dragan, 
> > It is ok, you can apply patch yourself. 
> I've committed under your name (which hopefully I got right): 
>    https://github.com/dealii/dealii/pull/3114 
> > I actually also had to specialize many template functions to work with 
> the new 
> > type (those related to matrices and vectors, BlockMatrixBase::add, 
> > SparseMatrix::add and also local_apply_boundary_conditions etc.). There 
> are 
> > some functions that do not work well with the user-defined types like 
> > Vector<>::allocate(), Vector<>::deallocate() and 
> Vector<adouble>::operator 
> > =(). They cause seg. faults. I am not sure why, perhaps because of 
> mem.align 
> > you use (Utilities::System::posix_memalign) and it is fine for primitive 
> > types. Anyway that is something internal for my case. 
> Hm, good question what is happening there. Feel free to propose individual 
> patches for each of these cases if you can identify an underlying reason. 
> > I am finishing what I started doing and will write you about an 
> interesting 
> > application of deal.II. It is mostly useful for multi scale modelling in 
> > chemical engineering but is general in nature. It is coupling of deal.II 
> with 
> > an equation-based simulator: basically, using deal.II only to assemble 
> > matrices/rhs (including non-linear FE cases), generating equations and 
> then 
> > solving one or more of these systems together with other differential 
> and 
> > algebraic equations in a large DAE system. All that is done from python 
> > (although implemented in c++). An example could be Lithium-ion 
> batteries: 
> > electrodes are typically made out of a porous material composed of large 
> > numbers of solid particles, and particles are in a electrolyte. 
> Particles 
> > (transport modelled using the FE method) are coupled at the larger 
> electrode 
> > length scale via electrolyte transport (using the finite volume method). 
> Two 
> > software are fully coupled and the boundary conditions can be set using 
> the 
> > equations from the other software etc. 
> That would make for a fantastic code gallery project! 
> Best 
>   Wolfgang 
> -- 
> ------------------------------------------------------------------------ 
> Wolfgang Bangerth          email:                 bang...@colostate.edu 
> <javascript:> 
>                             www: http://www.math.colostate.edu/~bangerth/ 

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