based upon the DFT++ algebraic framework introduced in Computer
Physics Communications 128, 1-45 (June 2000).
This framework allows us to transparently separate the computational
guts (cache optimization, parallelization, etc.) from the introduction
of new representations (plane waves, wavelets) and new
physics (new density functionals, linear response theory,
dielectric solutions).
The software is fully cache and register optimized,
and runs in serial, threaded, MPI and mixed threaded-MPI
parallel environments.
