DUNE-project

IWR, University Heidelberg, Germany http://conan.iwr.uni-heidelberg.de/dune-workshop/ The Distributed and Unified Numerics Environment (DUNE) is a software framework for the numerical solution of partial differential equations with grid-based ... [More] methods. Using generic programming techniques it strives for both: high flexibility (efficiency of the programmer) and high performance (efficiency of the program). DUNE provides, among other things, a large variety of local mesh refinement techniques, a scalable parallel programming model, an ample collection of finite element methods and efficient linear solvers. This one week course will provide an introduction to the most important DUNE modules. At the end the attendees will have a solid knowledge of the simulation workflow from mesh generation and implementation of finite element and finite volume methods to visualization of the results. Successful participation requires knowledge of object-oriented programming using C++ including generic programming with templates (this knowledge will be brushed up on the first day of the course). A solid background on numerical methods for the solution of PDEs is expected. [Less]

Since its release, a few bugs have been found in the 1.2 release. To fix these, the new 1.2.2 release is available for download. For more details, have a look at the release notes.

The Dune-Fem module is based on the Dune-Grid interface library, extending the grid interface by a number of higher order discretization algorithms for solving non-linear systems of partial differential equations. This includes for example the ... [More] automatic handling of the degrees of freedom (dof) on locally adapted and parallel grids - including dynamic load balancing. For more details, have a look at the Dune-Fem page. [Less]

A new meta implementation of the grid interface, the GeometryGrid, has been added to dune-grid. GeometryGrid wraps any other implementation of the DUNE grid interface (called the host grid) and replaces its geometry by a new piecewise linear one. To ... [More] this end, the user must provide a coordinate function to calculate the corners of these geometries. Anything from an analytical function, mapping the corners of the host grid into some (possibly higher dimensional) space, and a continuous discrete function (given in the vertices) is supported. GeometryGrid is implemented using the generic geometries, and anybody interested in this very powerful feature should have a look in the code. Have a look at the documentation for further details. [Less]

Since its release, a few bugs have been found in the 1.2 release. To fix these, the new 1.2.1 release is available for download. For more details, have a look at the release notes.

This week we introduced a new numbering of the subentities of the reference elements. The reason is that the new numbering is more consistent and generalizes more easily to higher dimensions. This change may affect your code in subtle ways if you depend on a particular numbering. We have assembled a page with the technical details.

The new version 1.2 of Dune has been released and is available for download. Major features of the new release are a better build system, cleaner interfaces, and a new prototype grid to ease writing your own grid implementations. Have a look at the release notes for details. Enjoy!

The second release candidate of the upcoming Dune 1.2 release has been made available for download. It will be the last candidate before the actual release, which is scheduled for next week. Please test the modules and report any problems.

We are proud to announce the first official release of the dune-subgrid module. This module provides the meta grid SubGrid, which allows to do computations on subsets of elements of Dune grids. The module is available for download from the project homepage. There is also a paper with the module documentation and some example applications.

The first release candidate of the upcoming Dune 1.2 release has been made available for download. We expect these modules to be quite stable already. Please test them and report any problems.