http://www.dune-project.org/news/ RSS News Feed for the DUNE Project. DUNE is an acronym for Distributed and Unified Numerics Environment 2010-02-18 18 en dune@dune-project.org This is WML Version 2.0.11 (19-Aug-2006) 11. 1. 2010 http://www.dune-project.org/news/index.html#11.1.2010 http://www.dune-project.org/news/index.html#11.1.2010 You can still register for the DUNE course until Monday, February 22. 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 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. 25. 01. 2010 http://www.dune-project.org/news/index.html#25.01.2010 http://www.dune-project.org/news/index.html#25.01.2010 ALUGrid version 1.22 has been released. Generating ALUGrid's no longer needs temporary macro grid files. Also, some bug fixes have been done. The trunk of Dune-Grid and also the upcoming release 2.0 of Dune-Grid will only work with this or newer versions. The new version is available from the ALUGrid page. 22. 01. 2010 http://www.dune-project.org/news/index.html#22.01.2010 http://www.dune-project.org/news/index.html#22.01.2010 The new module dune-solvers is now available for download. It contains a variety of algebraic solvers, all structured in a dynamically polymorphic class hierarchy. dune-solvers is not a core module but used and maintained by Carsten Gräser and Oliver Sander. 15. 01. 2010 http://www.dune-project.org/news/index.html#15.01.2010 http://www.dune-project.org/news/index.html#15.01.2010 ALUGrid version 1.20 has been released. Boundary segment indices and boundary projection for curved boundaries are now supported. Also, some bug fixes have been done, for example, a memory leak when using vertex or edge communication for parallel computations. The new version is available from the ALUGrid page. 11. 1. 2010 http://www.dune-project.org/news/index.html#11.1.2010 http://www.dune-project.org/news/index.html#11.1.2010 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 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. 1. 12. 2009 http://www.dune-project.org/news/index.html#1.12.2009 http://www.dune-project.org/news/index.html#1.12.2009 An updated patch set for UG has just been released. You need these patches if you want to use UGGrid from the Dune svn development branch. They contain various bug fixes and improvements, mainly related to using very large coarse grids making the parallel features of UG available in Dune. The new patches are available for download with the installation instructions. 19. 11. 2009 http://www.dune-project.org/news/index.html#19.11.2009 http://www.dune-project.org/news/index.html#19.11.2009 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. 26. 10. 2009 http://www.dune-project.org/news/index.html#26.10.2009 http://www.dune-project.org/news/index.html#26.10.2009 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 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. 02.10.2009 http://www.dune-project.org/news/index.html#02.10.2009 http://www.dune-project.org/news/index.html#02.10.2009 Bernd Flemisch brought up the idea of a Dune User Meeting. Bernd offers to organize such a meeting if there is enough interest in the Dune community. He setup a doodle poll to find out how much interest in a Dune User Meeting there actually is (http://www.doodle.com/vzx9zbnz7aup8485). The poll is open until Friday, 9th of October. So please, Dune users out there, give your vote on this poll. 30.09.2009 http://www.dune-project.org/news/index.html#30.09.2009 http://www.dune-project.org/news/index.html#30.09.2009 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 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. 29. 7. 2009 http://www.dune-project.org/news/index.html#29.7.2009 http://www.dune-project.org/news/index.html#29.7.2009 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. 10. 4. 2009 http://www.dune-project.org/news/index.html#10.4.2009 http://www.dune-project.org/news/index.html#10.4.2009 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. 2. 4. 2009 http://www.dune-project.org/news/index.html#2.4.2009 http://www.dune-project.org/news/index.html#2.4.2009 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! 20. 3. 2009 http://www.dune-project.org/news/index.html#20.3.2009 http://www.dune-project.org/news/index.html#20.3.2009 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. 18. 3. 2009 http://www.dune-project.org/news/index.html#18.3.2009 http://www.dune-project.org/news/index.html#18.3.2009 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. 3. 3. 2009 http://www.dune-project.org/news/index.html#3.3.2009 http://www.dune-project.org/news/index.html#3.3.2009 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. 18. 2. 2009 http://www.dune-project.org/news/index.html#18.2.2009 http://www.dune-project.org/news/index.html#18.2.2009 The schedule of the DUNE Course at IWR, University Heidelberg, Germany, is online. Please see the course homepage at http://conan.iwr.uni-heidelberg.de/dune-workshop/ for more details. We are pleased to annouce that the second day of the DUNE course will be contributed by the DUNE developers at IAM Freiburg. By participating in this course scientists have the opportunity to get a hands-on introduction to the DUNE framework. Main focus is to give a detailed introduction to the DUNE core modules: the grid interface including IO methods with its numerous grid implementations and a brand new module supporting easy and natural discretizations. In the exercises elliptic and hyperbolic model problems will be solved with various methods. In addition, a course on advanced C++ programming will be held before the DUNE workshop on March 23-24, 2009. 13. 02. 2009 http://www.dune-project.org/news/index.html#13.02.2009 http://www.dune-project.org/news/index.html#13.02.2009 ALUGrid version 1.14 has been released. The code compiles now also on Mac OS X systems. The new version is available from the ALUGrid page. 4. 2. 2009 http://www.dune-project.org/news/index.html#4.2.2009 http://www.dune-project.org/news/index.html#4.2.2009 We have created the release branch for the upcoming Dune 1.2 release. The release will contain the modules dune-common, dune-istl, dune-grid, dune-grid-howto, and dune-grid-dev-howto. These modules can be downloaded using subversion svn checkout https://svn.dune-project.org/svn/dune-common/releases/1.2 dune-common Martin Nolte and Oliver Sander have been named release managers. We intend to concentrate on stability and documentation for a few weeks and have the actual release by the beginning of next month. 9. 01. 2009 http://www.dune-project.org/news/index.html#9.01.2009 http://www.dune-project.org/news/index.html#9.01.2009 ALUGrid version 1.13 has been released. The new C++ standard is now completely supported. The new version is available from the ALUGrid page. 8. 1. 2009 http://www.dune-project.org/news/index.html#8.1.2009 http://www.dune-project.org/news/index.html#8.1.2009 IWR, University Heidelberg, Germany http://conan.iwr.uni-heidelberg.de/dune-workshop/ In many areas of science and engineering numerical simulation is an important tool for research and development. Current simulation trends range from multiscale-/multiphysics modelling to the usage of parallel machines with PetaFlops performance. The Distributed and Unified Numerics Environment (DUNE) tries to fit these heterogeneous requirements inside a single environment with novel numerical techniques as well as state-of-the-art software development methods. By participating in this course scientists have the opportunity to get a hands-on introduction to the DUNE framework. Main focus is to give a detailed introduction to the DUNE core modules: the grid interface including IO methods with its numerous grid implementations and the iterative solver module ISTL. In the exercises elliptic and hyperbolic model problems will be solved with various methods. In addition, a course on advanced C++ programming will be held before the DUNE workshop on March 23-24, 2009. 14. 11. 2008 http://www.dune-project.org/news/index.html#14.11.2008 http://www.dune-project.org/news/index.html#14.11.2008 A new patch file for UG has been uploaded and can be found here. It includes a new method that is needed to properly implement the boundaryId() method. If you use UGGrid and the DUNE developer branch you have to get this new patch file before updating dune-grid. Sorry for the hassle. 6. 11. 2008 http://www.dune-project.org/news/index.html#6.11.2008 http://www.dune-project.org/news/index.html#6.11.2008 We are pleased to announce the release of Version 1.1.1 of the "Distributed and Unified Numerics Environment" (DUNE) (download). This version is a bug fix version of the previous release 1.1. DUNE is free software licensed under the GPL (version 2) with a so-called "runtime exception". This licence is similar to the one under which the libstdc++ libraries are distributed. Thus it is possible to use DUNE even in proprietary software. The changes to from version 1.1 to version 1.1.1 are listed in the release notes. For detailed information a file containing the differences of the source file from each core module is available in the download directory. 4. 09. 2008 http://www.dune-project.org/news/index.html#4.09.2008 http://www.dune-project.org/news/index.html#4.09.2008 ALUGrid version 1.12 has been released. METIS 5.0 and PARTY 1.99 are now supported. The new version is available from the ALUGrid page. 29. 7. 2008 http://www.dune-project.org/news/index.html#29.7.2008 http://www.dune-project.org/news/index.html#29.7.2008 ALUGrid version 1.11 has been released. We found a bug in the border-border communication. See the ChangeLog file for more details. The new version is available from the ALUGrid page.