UPDATE (22/02/2017): I have merged the chebyshev branch with the master, as this provides a number of improvements to radial search performance. This branch also changes the matrix-free Eigen operators significantly. These now take generic C++ function objects, rather than symbolic expressions. I've also added a matrix-free operator using Chebyshev interpolation to speed up its operation on a vector (at a cost to accuracy). I hope to put out an initial paper on Aboria soon, and so will just be fixing bugs on the master branch until then (when the paper is out Aboria will move to version 0.4).
Aboria implements an expressive Domain Specific Language (DSL) in C++ for specifying expressions over particles and their neighbours in N dimensional space. The library is header-only and based on expression templates for efficient and natural expression of mathematical expressions applied over the particles.
The particle data is contained in a STL compatible container. Each particle has a position and user-defined data-package (for other variables such as velocity, density etc) and is optionally embedded within a cuboidal spatial domain (for neighbourhood searches) that can be periodic or not. Users can implement standard C++ and STL algorithms directly on the particle data, or use the expression template API to naturally form operations over the particle set.
The motivation behind Aboria is to provide a useful library for implementing particle-based numerical algorithms, for example Smoothed Particle Hydrodynamics or Molecular/Langevin Dynamics.
Aboria is distributed under a BSD 3-Clause License, see LICENCE for more details.
For documentation see the Aboria website. If you are interested in contributing to Aboria, having trouble getting it working or just have a question, send me an email at martin.robinson@cs.ox.ac.uk.