http://www.dune-project.org/news/ RSS News Feed for the DUNE Project. DUNE is an acronym for Distributed and Unified Numerics Environment 2008-07-29 15 en dune@dune-project.org This is WML Version 2.0.11 (19-Aug-2006) 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. 17. 6. 2008 http://www.dune-project.org/news/index.html#17.6.2008 http://www.dune-project.org/news/index.html#17.6.2008 There is a new mailing list dune-disc-commit which all commit messages for the dune-disc package will be sent over. Please subscribe if you are interested in dune-disc development. 9. 04. 2008 http://www.dune-project.org/news/index.html#9.04.2008 http://www.dune-project.org/news/index.html#9.04.2008 We are pleased to announce the release of Version 1.1 of the "Distributed and Unified Numerics Environment" (DUNE) (download). 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 1.0 to version 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. 25. 3. 2008 http://www.dune-project.org/news/index.html#25.3.2008 http://www.dune-project.org/news/index.html#25.3.2008 We have started to work on a new tutorial module called dune-grid-dev-howto. This module will collect information on how to write new grid managers for the DUNE grid interface and how to adapt existing grid codes to DUNE. In particular it contains a dummy grid manager called IdentityGrid. It wraps a given second DUNE grid and includes all the boilerplate code that you need for your own grids. This should get you started on your own grid implementations. In the long run the module will also contain a document describing how to implement new DUNE Grids. 25. 3. 2008 http://www.dune-project.org/news/index.html#25.3.2008 http://www.dune-project.org/news/index.html#25.3.2008 The patches to the vanilla UG which you need in order to use a version of UGGrid newer than 1.0 are finally available for download. Have a look at the installation instructions for details. 4. 3. 2008 http://www.dune-project.org/news/index.html#4.3.2008 http://www.dune-project.org/news/index.html#4.3.2008 ALUGrid version 1.1 has been released. This will be the stable version for the DUNE trunk as well as the upcoming release 1.0.1 of the DUNE core modules. ALUGrid has been revised to work with a large number of grid cells (more than 100 million) in parallel. Also some minor bug fixes have been done. The new version is available from the ALUGrid page. 3. 3. 2008 http://www.dune-project.org/news/index.html#3.3.2008 http://www.dune-project.org/news/index.html#3.3.2008 A meeting of all DUNE developers was held on 27. and 28. of February 2008 at the Freie Universität Berlin. The main issue was an evaluation and revision of the grid interface. A list of projected changes to the interface can be found in the meeting minutes. We also decided to have three new core modules: dune-shapefunctions, dune-functions, and dune-grid-dev-howto. These will appear soon. 18. 1. 2008 http://www.dune-project.org/news/index.html#18.1.2008 http://www.dune-project.org/news/index.html#18.1.2008 The DUNE group in Stuttgart is pleased to a announce its first DUNE Course. It will take place March 13-14, 2008 at IPVS, University Stuttgart. 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 a hyperbolic sample problem will be implemented (convection equation using Discontinuous-Galerkin discretisation with constant and linear shape functions). For people not already familiar with generic programming, static polymorphism, templates and the STL, there is the possibility to get insight in these areas by participating in the "Advanced C++" course held on March 12, 2008. For further information see the course homepage. 8. 1. 2008 http://www.dune-project.org/news/index.html#8.1.2008 http://www.dune-project.org/news/index.html#8.1.2008 The DUNE groups in Freiburg and Münster are pleased to announce the release of Version 0.9 of the FEM Module of DUNE. The dune-fem module is based on the dune-grid interface library, extending the grid interface by a number of discretization algorithms for solving non-linear systems of partial differential equations. For further information and for downloads see the dune-fem homepage. 20. 12. 2007 http://www.dune-project.org/news/index.html#20.12.2007 http://www.dune-project.org/news/index.html#20.12.2007 We are pleased to announce the release of Version 1.0 of the "Distributed and Unified Numerics Environment" (DUNE). DUNE is a modular toolbox for solving partial differential equations (PDEs) with grid-based methods. It supports the easy implementation of methods like Finite Elements (FE), Finite Volumes (FV), and also Finite Differences (FD). 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. For further information, have a look at our website http://www.dune-project.org The framework consists of a number of modules which are downloadable as separate packages. The current core modules are: dune-common contains the basic classes used by all DUNE-modules. It provides some infrastructural classes for debugging and exception handling as well as a library to handle dense matrices and vectors. dune-grid defines nonconforming, hierarchically nested, multi-element-type, parallel grids in arbitrary space dimensions. Graphical output with several packages is available, e.g. file output to IBM data explorer and VTK (parallel XML format for unstructured grids). The graphics package Grape has been integrated in interactive mode. dune-istl (Iterative Solver Template Library) provides generic sparse matrix/vector classes and a variety of solvers based on these classes. A special feature is the use of templates to exploit the recursive block structure of finite element matrices at compile time. Available solvers include Krylov methods, (block-) incomplete decompositions and aggregation-based algebraic multigrid. 04. 12. 2007 http://www.dune-project.org/news/index.html#04.12.2007 http://www.dune-project.org/news/index.html#04.12.2007 From today on the DUNE News are also available via an RSS 2.0 feed . Together with the RSS Feed we also added functionality to keep the dune-announces mailing list synced with the news section on the web site. 26. 11. 2007 http://www.dune-project.org/news/index.html#26.11.2007 http://www.dune-project.org/news/index.html#26.11.2007 Bernd Flemisch has kindly donated code that allows to read grids in the Star-CD format. It works for all grid implementations that have the grid construction interface of UGGrid. 17. 09. 2007 http://www.dune-project.org/news/index.html#17.09.2007 http://www.dune-project.org/news/index.html#17.09.2007 Today we have completed two papers on the DUNE system. They are P. Bastian, M. Blatt, A. Dedner, C. Engwer, R. Klöfkorn, M. Ohlberger, O. Sander. A Generic Grid Interface for Parallel and Adaptive Scientific Computing. Part I: Abstract Framework and P. Bastian, M. Blatt, A. Dedner, C. Engwer, R. Klöfkorn, R. Kornhuber, M. Ohlberger, O. Sander: A Generic Grid Interface for Parallel and Adaptive Scientific Computing. Part II: Implementation and Tests in DUNE. The first gives a rigorous mathematical definition of a grid as we see it. The second one explains the implementation and gives a few example applications to demonstrate the advantages of DUNE. If you're using DUNE for your own publications we kindly ask you to cite the second one. The papers have been submitted to 'Computing'. They are also available as Matheon preprints 403 and 404, respectively. 17. 08. 2007 http://www.dune-project.org/news/index.html#17.08.2007 http://www.dune-project.org/news/index.html#17.08.2007 After several bugs fixes, we released today the sixth and hopefully final beta release for the three core modules dune-common, dune-grid, dune-istl and the dune-grid-howto. We fixed several bugs concernig the documentation, beside these the code seems to be fairly mature. Go to the download page, grab the packages, test them! 18. 05. 2007 http://www.dune-project.org/news/index.html#18.05.2007 http://www.dune-project.org/news/index.html#18.05.2007 The UGGrid implementation of the grid interface now supports nonconforming meshes. These were provided by UG all along but not available through the grid interface. Now a new method UGGrid::setClosureType() allows to omit the green closure when doing mesh refinement. There are no restrictions on the number of hanging nodes you may have on a single edge. Enjoy the new feature and let us know about any problems you run into. 9. 05. 2007 http://www.dune-project.org/news/index.html#9.05.2007 http://www.dune-project.org/news/index.html#9.05.2007 From 6th to 9th of August 2007 the DUNE Summer School "Discretization of Evolution Equations using DUNE-Fem" will take place in Freiburg. See the Summer School's web page for detailed information. 18. 04. 2007 http://www.dune-project.org/news/index.html#18.04.2007 http://www.dune-project.org/news/index.html#18.04.2007 Today we released the fifth and hopefully final beta release for the three core modules dune-common, dune-grid, dune-istl and the dune-grid-howto. We fixed several bugs concernig the documentation, beside these the code seems to be fairly mature. Go to the download page, grab the packages, test them! 04. 04. 2007 http://www.dune-project.org/news/index.html#04.04.2007 http://www.dune-project.org/news/index.html#04.04.2007 The restructured DUNE website launched today! You will hopefully find the information more easily. 28. 03. 2007 http://www.dune-project.org/news/index.html#28.03.2007 http://www.dune-project.org/news/index.html#28.03.2007 Today we released the fourth and hopefully final beta release for the three core modules dune-common, dune-grid, dune-istl and the dune-grid-howto. Go to the download page, grab the packages, test them! 22. 03. 2007 http://www.dune-project.org/news/index.html#22.03.2007 http://www.dune-project.org/news/index.html#22.03.2007 Today we released the third an hopefully final beta release for the three core modules dune-common, dune-grid, dune-istl and the dune-grid-howto. Go to the download page, grab the packages, test them! 01. 03. 2007 http://www.dune-project.org/news/index.html#01.03.2007 http://www.dune-project.org/news/index.html#01.03.2007 We released the second beta of the three core modules dune-common, dune-grid, dune-istl and the dune-grid-howto. This beta release include a lot of bug fixes. We encourage all users to test and report bugs. Go to the download page to grab the packages. 14. 02. 2007 http://www.dune-project.org/news/index.html#14.02.2007 http://www.dune-project.org/news/index.html#14.02.2007 We are moving DUNE to a new server. Many services (like this web page) already run on the server without anybody noticing it. Now we started to move the repositories. Access to dune-common, dune-grid, dune-grid-howto and dune-istl on the old server is disabled and these repositories are moved to the new server. The DNS Entry for svn.dune-project.org is updated and you should be able to access the repositories as soon as your DNS caches are uptodate. Both anonymous checkout and read/write access are available via the same url: https://svn.dune-project.org/svn/dune-XXXX/ 31. 01. 2006 http://www.dune-project.org/news/index.html#31.01.2006 http://www.dune-project.org/news/index.html#31.01.2006 The AmiraMesh library, which is used to read and write grids in the native format of the Amira visualization software, is now available for download. 1. 1. 2007 http://www.dune-project.org/news/index.html#1.1.2007 http://www.dune-project.org/news/index.html#1.1.2007 Today (1. January 2007) we released the first beta of the three core modules dune-common, dune-grid, dune-istl and the dune-grid-howto. These packages are beta. We encourage all users to test and report bugs. We plan to release the final 1.0 in february 2007. Go to the download page to grab the packages. 15. 12. 2006 http://www.dune-project.org/news/index.html#15.12.2006 http://www.dune-project.org/news/index.html#15.12.2006 Dune got updated to the latest version of ALUGrid, version 0.41. There will be no changes until Dune-1.0, except bug fixes if any occur.