Hello everyone, 
I am writing this post to ask a couple of questions about the CUDA 
facilities in deal.II, after a look on step-64 tutorial.

1. Searching for the documentation, I noticed that routines such as 
CUDAWrappers::FEFaceEvalution or CUDAWrappers::MatrixFree::loop are not 
defined. Am I correct? Does this mean, for instance, that a Discontinuous 
Galerkin extension of step-64 tutorial with a matrix free formulation is 
not feasible at the moment?

2. I noticed instead that a CUDAWrappers::SparseMatrix class is defined. 
However, it seems to me that it can be initialized only with SparseMatrix 
class. Does it mean that it cannot be combined with MPI sparse matrices 
(i.e. PETSc or Trilinos)? Moreover, is there somewhere an example of use of 
such class, so as to check e.g. the proper use Utilities::CUDA::Handle for 
the 'reinit' function?

Thanks in advance.

Best,

Giuseppe


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