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Dune 2.5.1 Released

The Dune 2.5.1 maintenance release is out. You can download the tarballs, checkout the v2.5.1 tag via Git, or get prebuilt packages from Debian unstable.

Included in the release are the core modules (dune-common, dune-geometry, dune-grid, dune-grid-howto, dune-istl, dune-localfunctions) and several modules from the staging area (dune-functions, dune-typetree, dune-uggrid).

Please refer to the release notes for a more detailed listing of what has changed in the new release.

DUNE 2.4.2 released

Dune 2.4.2 has been released. You can download the tarballs of checkout the v2.4.2 tag via Git.

Included in the release are the core modules (dune-common, dune-geometry, dune-grid, dune-istl, dune-localfunctions).

Dune 2.4.2 is a bug fix release to keep Dune 2.4 working for recent systems. It is advised to move to Dune 2.5.

DUNE Mailing list addresses changed

The Dune mailing lists have moved. Previously they were using addresses in the @dune-project.org domain; this has been changed to @lists.dune-project.org. Please update your address books, and, if applicable, your mail filters. The web interface for administrative tasks and list archives continues to be available at http://lists.dune-project.org.

In addition, lists that were no longer needed have been removed.

The mailing lists are now hosted by the group of Christian Engwer at the WWU Münster. We thank the group of Peter Bastian for hosting the mailing lists for more than 15 years!

Proceedings of the third DUNE User Meeting published

We are happy to announce that the proceedings of the third Dune user meeting, held in 2015, have been published in archives of numerical software. You can find all ten papers in the current issue of the magazine.

Please note that we are currently working on a print edition and will let you know once it is available.

We would like to thank all authors and referees for their valuable work.

Invitation to the Dune User Meeting 2017

As a second gift for christmas, we cordially invite all of our users to the 2017 Dune User Meeting to be held at Heidelberg University on March 13-14, 2017. The meeting is intended as an opportunity for the Dune users to present their work, meet the developers, get into fruitful discussion and foster future collaborations.

For more detailed information and registration, check the event website.

Also, the Dune developer meeting will be held at the same venue on March 15th.

Dune 2.5.0 Released

Dune 2.5.0 has been released as an early Christmas gift. You can download the tarballs, checkout the v2.5.0 tag via Git, or get prebuilt packages from Debian unstable.

Included in the release are the core modules (dune-common, dune-geometry, dune-grid, dune-grid-howto, dune-istl, dune-localfunctions) and several modules from the staging area (dune-functions, dune-typetree, dune-uggrid).

Many deprecated features have been removed, including the Autotools build system, dune-grid’s EntityPointer and SGrid; some features have been moved to new extension modules (for example dune-alugrid and dune-grape). Dune now also requires a compiler supporting C++11 and parts of C++14 (as supported by gcc 4.9). Please refer to the release notes for a more detailed listing of what has changed in the new release.

Dune 2.5.0rc2 Released

The second release candidate for the upcoming 2.5 release is now available. You can download the tarballs, checkout the v2.5.0rc2 tag via Git, or get prebuilt packages from Debian unstable. Please go and test, and report any problems that you encounter.

Included in the release candidate are the core modules (dune-common, dune-geometry, dune-grid, dune-grid-howto, dune-istl, dune-localfunctions) and several modules from the staging area (dune-functions, dune-typetree, dune-uggrid).

Please refer to the recent changes page for an overview of what has changed in the new release. If anything is missing, please amend the list.

There have been only minor changes since the first release candidate and we hope to publish the final release soon.

DUNE/PDELab Course at Heidelberg University (March 6 - 10, 2017)

The Interdisciplinary Center for Scientific Computing at Heidelberg University will host its annual DUNE and PDELab course on March 6-10, 2017.

This one week course provides an introduction to the most important DUNE modules and especially to DUNE-PDELab. 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. Topics covered are the solution of stationary and time-dependent problems, as well as local adaptivity, the use of parallel computers and the solution of non-linear PDEs and systems of PDEs.

Dates

March 6, 2017 - March 10, 2017

Registration Deadline

Friday, February 15, 2017

For further information, see the course homepage.

Dune 2.5.0rc1 Released

The first release candidate for the upcoming 2.5 release is now available. You can download the tarballs, checkout the v2.5.0rc1 tag via Git, or get prebuilt packages from Debian experimental. Please go and test, and report any problems that you encounter.

Included in the release candidate are the core modules (dune-common, dune-geometry, dune-grid, dune-istl, dune-localfunctions) and several modules from the staging area (dune-functions, dune-typetree, dune-uggrid).

Please refer to the recent changes page for an overview of what has changed in the new release.

DUNE 2.5: release branches set up, please test

The release branches for the upcoming DUNE 2.5 release have been set up last week (named releases/2.5). Please test it!

Note that changes in master will not be automatically picked up by us. If there are issues or merge requests that you would like to see addressed in 2.5 please,

  • for issues: make sure the issue is assigned to the “DUNE 2.5.0” milestone
  • for merge requests: make sure the merge request is against the releases/2.5 branch, assigned to the “DUNE 2.5.0” milestone and the CI tests pass.

For merge requests already accepted into master, GitLab provides a convenient “Cherry-pick” button to create a new merge request against releases/2.5.

Note that non-critical issues will not block the release. Please make sure a merge request is provided in time or it might have to wait for 2.5.1 or 2.6.0. As a short reminder, the first release candidate is planned for November, 7th, that is in two weeks.

Preparations for DUNE 2.5 begin

A year after the release of DUNE 2.4, preparations for a new release, DUNE 2.5, have begun. Our current rough plan is to create a release branch October, 17th, plan for a first release candidate November, 7th. If required, followed by a second release candidate November, 21st. The final release would then take place either November, 21st or December, 5th (in case of two release candidates).

The release will be managed by Ansgar Burchardt and Oliver Sander.

UG grid backend forked into new dune-uggrid module

For many years, the power of the grid manager from the venerable UG finite element code has been available in Dune as the UGGrid grid implementation. For this, you had to build and install UG as a separate library, and dune-grid used it as an external dependencies.

Now, UG has always been much more than a grid data structure, but only the grid data structure was used in dune-grid. To make bugfixes and general maintenance of UG easier, we have now forked UG, and turned the result into a genuine Dune module called dune-uggrid. The new code has already seen considerable cleanup, and nontrivial bugfixes.

In the short run, there are very few changes for users of dune-grid. If you want to use UGGrid with the git master of dune-grid, you now have to install the dune-uggrid module instead of the entire UG software. If present, dunecontrol will find and build it just like any other module.

DUNE/Fem Course at University of Stuttgart (Sep 26-30, 2016)

A one week Dune and Dune::Fem school will be hosted at the IANS/University of Stuttgart. The intended audience of the course are M.Sc. and PhD students.

The course will give an introduction to the Dune core modules including the Dune grid interface. It will then proceed to the discretization of PDEs with the Dune::Fem toolbox. Further topics include the simulation of stationary and transient problems, including essentials of mesh-adaptivity and parallel computing.

Dates: September 26 - 30, 2016 (Mo - Fr)

Registration: Participants should register until end of August (see course page below).

Fees: Workshop fees are 50 Euro in order to cover expenses for coffee breaks and course material.

Course venue: Institute for Applied Analysis and Numerical Simulation (IANS) Pfaffenwaldring 57, 70569 Stuttgart, Germany.

Further information and a registration form can be found at the course page http://www.ians.uni-stuttgart.de/events/dune-fem-school-2016.

GSoC mid-term

Google Summer of Code 2016 Creative Commons License

We just finished the first half of this year’s Google Summer of Code program, called mid-term. It is used to evaluate both the mentors and the student for Google. Two projects show great progress, one did not take off and we had to fail the student:

Getting started with Dune

There is a new text on how to get started with Dune. We hope that it will be useful to many people.

DUNE is part of GSoC 2016

Google Summer of Code 2016 Creative Commons License

We are happy to let you know, that DUNE has been accepted as a mentoring organization in Google Summer of Code 2016. Google is offering students stipends to write code for DUNE this summer.

We have put together a short list of possible project ideas, we had in mind. This list is not exclusive, so if you have a good idea, feel free to discuss with us. To get yourself used to DUNE, have a look at our junior jobs. We ask every student to solve at least one junior job prior to his application.

Further information can be found on the official GSoC 2016 page of DUNE and our according user wiki page.

Dune 2.4.1 Released

We are pleased to announce the release of Dune 2.4.1, the first point release in the 2.4 release series of the Dune core modules. This release mostly contains bug fixes for problems in the original 2.4.0 release, but also a number of backported feature from the master development branch. For a list of the fixed bugs, new features and known issues take a look at the release notes. You can download the tarballs from our download page or checkout the v2.4.1 tag of the modules via git. Please go and test, and report the problems that you encounter.

Dune 2.4.1-rc2 Released

The second release candidate for the upcoming 2.4.1 maintenance release of the core modules is now available. You can download the tarballs from our download page or checkout the v2.4.1-rc2 tag of the modules via git. This release candidate is almost identical to RC1, it mainly fixes a problem with the tarballs. Please go and test, and report the problems that you encounter.

Dune 2.4.1-rc1 Released

The first release candidate for the upcoming 2.4.1 maintenance release of the core modules is now available. You can download the tarballs from our download page or checkout the v2.4.1-rc1 tag of the modules via git Please go and test, and report the problems that you encounter.

New paper on dune-functions module

We have just finished a new article that describes and benchmarks parts of the new dune-functions module. The dune-functions module defines and implements interfaces for functions and function space bases, providing a middle layer between the Dune core modules and discretization modules like dune-pdelab and dune-fufem.

The code and more information is available from the module homepage.

DUNE/PDELab Course (March 7-11, 2016)

This one week course will provide an introduction to the most important DUNE modules and especially to DUNE-PDELab. 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. Topics covered are the solution of stationary and time-dependent problems, as well as local adaptivity, the use of parallel computers and the solution of non-linear PDE and systems of PDEs.

Registration deadline: Friday, February 15, 2016 Dates: March 7, 2016 - March 11, 2016

Course venue: Interdisciplinary Center for Scientific Computing University of Heidelberg, Im Neuenheimer Feld 368 69120 Heidelberg, Germany

Fee: The fee for this course is 225 EUR including course material, coffee and lunch breaks as well as a course dinner.

For registration and further information see http://conan.iwr.uni-heidelberg.de/dune-workshop/.

Dune-Fem 2.4 Released

The developers of Dune-Fem are pleased to announce the release of version 2.4.0 of their discretization module. From now on, the version number of a Dune-Fem release will match the compatible version number of the Dune core modules, i.e., this version is compatible with the 2.4 release series of the Dune core modules. Besides the usual bug fixes and compatibility changes, the major features added in this release are:

  • cmake support
  • bindings the LDL and SPQR solvers from SuiteSparse
  • introduction of a (Local)DofVector concept
  • revision of GridParts based on GridViews
Core Module repositories moved to a GitLab instance

The repositories of the Dune core modules have moved to a GitLab instance hosted at IWR Heidelberg. You find it here. The old repositories will be kept in read-only state for a while, but you should switch to the new repositories soon. With this change we are also exploring new development models. Merge requests on GitLab are our favorite way of receiving contributions from now on. Just get a GitLab account, fork the core modules and open a merge request! Note, that also the issue tracker has moved from Flyspray to GitLab. All old issues are accessible in the project flyspray/FS on GitLab.

Dune 2.4 Released

We are pleased to announce the release of the new stable version 2.4.0 of the Dune core modules. This release contains various new features and bugfixes. The probably most prominent one is the change of the default build system from autotools to CMake. The autotools build system is now deprecated and will be removed in the next major release. For further improvements, deprecations, clean-ups, and known issues have a look at the release notes. You can download the tarballs from our download page, checkout the v2.4.0 tag of the modules via git.

Dune 2.4.0-rc3 Released

The third release candidate for the upcoming 2.4 release of the core modules is now available. You can download the tarballs from our download page, checkout the v2.4.0-rc3 tag of the modules via git. For a list of changes and known issues please refer to the release notes. Please go and test, and report the problems that you encounter.

Dune 2.4.0-rc2 Released

The second release candidate for the upcoming 2.4 release of the core modules is now available. You can download the tarballs from our download page, checkout the v2.4.0-rc2 tag of the modules via git. For a list of changes and known issues please refer to the release notes. Please go and test, and report the problems that you encounter.

Dune 2.4.0-rc1 Released

The first release candidate for the upcoming 2.4 release of the core modules is now available. You can download the tarballs from our download page, checkout the v2.4.0-rc1 tag of the modules via git, or get prebuilt packages from Debian experimental. Please go and test, and report the problems that you encounter.

3rd DUNE User Meeting, Heidelberg, September 28-29, 2015

We cordially invite all DUNE users to participate in the 3rd DUNE User Meeting 2015 to be held in Heidelberg in September 28-29, 2015. This is a meeting for our users to showcase how they are using DUNE, foster future collaborations, and present their needs to the DUNE community.

The format of the meeting will be rather informal and similar to the Finite Element Fair. This means that every participant will be able to give a presentation. Presentations should be prepared such that the time needed for presenting is held flexible, i.e. ranging from a few minutes of presentation time to about half an hour. At the start of the meeting we will divide the available presentation time between the speakers and choose the order of the speakers randomly.

Please indicate your interest and whether you would like to give a presentation in the wiki. Although there is no fixed deadline, we would appreciate registering as soon as possible.

We will have the DUNE Developer Meeting 2015 right after the user meeting.

The initiators of this meeting are Markus Blatt, Bernd Flemisch, and Christoph Grüninger.

DUNE/PDELab Course (February 23-27, 2015)

This one week course will provide an introduction to the most important DUNE modules and especially to DUNE-PDELab. 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. Topics covered are the solution of stationary and time-dependent problems, as well as local adaptivity, the use of parallel computers and the solution of non-linear PDE’s and systems of PDE’s.

Registration deadline: Friday February 6, 2015 Dates: February 23, 2015 - February 27, 2015

Course venue: Interdisciplinary Center for Scientific Computing University of Heidelberg, Im Neuenheimer Feld 350368 69120 Heidelberg, Germany

Fee: The fee for this course is 215 EUR including course material, coffee and lunch breaks as well as course dinner on Wednesday.

For registration and further information see http://conan.iwr.uni-heidelberg.de/dune-workshop/.

The Dune 2.3.1 release is now available in Debian wheezy-backports

Which makes it much easier to install for those running the current Debian stable distribution. Enjoy!

Download from Debian wheezy-backports.

CMake is default build system

Last weekend we switched our default build system. Instead of Autotools, CMake is now the default.

We hope to lower the barrier to make changes to the build system, reduce configure and compile times, get less cluttered output, and use a more modern system that is still actively developed.

  • Support for Autotools is deprecated and will be removed after Dune 2.4.
  • Pass –no-cmake to dunecontrol to force the use of Autotools.
  • If no build directory is given make files, libraries and executables are in <module-dir>/build-cmake/ .
  • Our CMake-related documentation can be found in the Dune user wiki (no longer available))
  • A quick guide for the switch (no longer available)

Please help improving Dune by testing the new build system. Report bugs, share success stories, and improve the documentation in the wiki!

Our plan is to keep Autotools for the Dune 2.4 release and drop it for Dune 3.0. Once we dropped Autotools support, we are able to make major changes as we don’t have to consider Autotools compatibility anymore.

dune-grid-glue in Debian Testing

The dune-grid-glue module for the coupling of Dune grids is now available in form of binary packages for Debian Testing/Jessie.

Results of the yearly developer meeting

On 22.-23.9.2014 twelve Dune developers gathered in Berlin for two days of discussion and planning of the future development of Dune. The agenda of the meeting is available, and there are detailed meeting minutes, thanks to Dominic.

Possibly the most relevant decision for users of Dune is in the release schedule. There will be a 2.4 release with various improvements and fixes before the end of the year. However, after that we will start to work on a 3.0 release which will include some more disruptive changes. The list includes

  • Dropping the AutoTools build system,
  • Removing the EntityPointer class, but making Entity objects copyable instead,
  • Introducing per-module namespaces.

See the meeting minutes for more details.

DUNE-ALUGrid 2.3 released

A new version of the ALUGrid manager has been released. We have added many new features and improved the performance of the code. One important change is that it is no longer required to download and build a separate library to use ALUGrid. Instead we have combined both the implementation and the bindings into a new dune module. To use DUNE-ALUGrid simply download the new module from the user wiki. Then add dune-alugrid either under "Suggests" or "Depends" in your dune.module file. Now simply run dunecontrol and everything should work as before. There are only a few things to keep in mind:

  • We have removed the special grid types e.g. ALUGridConform. Instead the type of the grid is always of the form Dune::ALUGrid< dimgrid, dimworld, eltype, refinetype, communicator >. (where communicator has a default value). The values for eltype are cube,simplex and for refinetype> the values are conforming, nonconforming defined in the DUNE namespace. The GRIDTYPE defines can still be used as before.
  • The define HAVE_ALUGRID will not work correctly anymore. Since DUNE-ALUGrid is now a dune module the correct name for the define is HAVE_DUNE_ALUGRID. This can produce some problems…

Note that we will not be supporting older versions of ALUGrid anymore and the binding in dune-grid will be deprecated. New features and improvements include

  • Conforming refinement for the 3D simplex grid
  • Internal load balancing method based on a space filling curve, making DUNE-ALUGrid self contained also in parallel
  • Bindings for fully parallel partitioners using zoltan. (metis is still supported as well)
  • Complete user control of the load balancing
  • Improved memory footprint

A detailed description of all the new features and some more details concerning the inner workings of DUNE-ALUGrid can be found in the paper The DUNE-ALUGrid Module. This is the paper we would now ask everyone to cite when using the DUNE-ALUGrid module.

PDELab 2.0.0 released

The PDELab developers are proud to announce the release of PDELab 2.0.0. PDELab 2.0 is a major release containing a large number of new features and improvements. Most importantly, the DOF handling and the interface to linear algebra have been completely rewritten, bringing improvements like faster and more memory-efficient matrix pattern construction, easier iteration over DOF vectors and built-in support for applying arbitrary permutations to the DOF order, among others. Another important new feature is the ability to do computations on non-overlapping grids without storing the ghost DOFs, reducing both the parallelization overhead and the complexity of the underlying code, in particular when using AMG. Finally, it is now possible to do adaptive calculations with nested function spaces. For details and a more complete overview of the changes and bug fixes in this release, see the release notes and the PDELab homepage for further information on how to obtain PDELab, including source packages.

DUNE 2.3.1 Released

We are pleased to announce the maintainance release 2.3.1 of the Dune core modules. Dune 2.3.1 brings bug fixes and improvements for ParMETIS, SCOTCH, and CMake 3.0. And it gains tab completion for dunecontrol.

For further more details have a look at the release notes.

New UG Release

Version 3.11.0 of the UG software has been released. It brings various fixes related to dynamic load balancing. This release will shortly be made the new minimum supported version for dune-grid master.

DUNE is part of ESA Summer of Code in Space 2014

DUNE participates in this year’s ESA Summer of Code in Space (SOCIS 2014). Within the next three months, Marco Agnese from the Imperial College of London will add thread support to parallel index sets.

Marco writes in a blog about his ongoing work.

UG in Debian

The UG software has arrived in Debian testing. It is configured to work with Dune, and provides the sequential grid manager. Thanks to Ansgar Burchardt who did the packaging work.

Dune-Fem-Howto

In addition to the new release of dune-fem we have also done a substantial overhaul of our dune-fem howto. The new module including html and pdf documentation with a step by step introduction on how to use dune-fem is now available for download from the Dune-Fem homepage.

Dune-Fem 1.4.0 Released

The developers of Dune-Fem are pleased to announce the release of version 1.4.0 of their discretization module. This version is compatable with the 2.3 release series of the Dune core modules.

Besides the usual ton of bug fixes and compatiblity with the current release of the Dune core modules, the interfaces of Dune-Fem have been further clarified. Discrete function spaces have been overhauled to simplify the integration of dune-localfunctions, the assembly of linear operators has seen a major revision, and initial support for PETSc has been added.

For further information and downloads see the Dune-Fem homepage.

Dune-Ash at the Deutsche Technik Museum Berlin

We are happy to announce that the special exhibition ‘Mathematics of Planet Earth’ at the Deutsche Technik Museum Berlin opened yesterday. Among other things, it exhibits the Dune based interactive volcano ash simulation Dune-Ash until June 30th.

Dune-Ash is also on permanent display in the MiMa Oberwolfach. The aim of the developers of Dune-Ash is to illustrate what mathematics and software simulation tools like Dune are used for in everyday life.

Further exhibitions all over the world are planned.

UG released as free software

We are happy to announce that the UG software system has been released as free software. The copyright holders have consented to make UG available under the GNU Lesser General Public License 2.1, or (optionally) a later version. Many thanks to them!

An LGPL-licensed UG means that it is now much easier to obtain the UG source code. As of today we will not provide patch files anymore. Instead, you can go to the new UG homepage directly, and get the complete source code there. That source code already contains all the latest patches needed for the use with Dune. We still provide our installation instructions that show how to build UG for use with Dune.

We hope that the new license will encourage more people to try out Dune with UGGrid. We will be happy to hear your feedback.

Together with the licensing change we announce the release of a new stable version ug-3.10.0. It fixes many small memory issues, mainly related to parallel processing. The release is available from the new homepage.

tab completion for dunecontrol

If you are using bash and you install your dune-common module, you now have tab completion for the dunecontrol command in your shell. If you want to use the feature with your locally installed module, or within a source tree, you have to source the completion file. In the latter case you can just add the following code to your .bashrc

. $DUNE_COMMON_ROOT/share/bash-completion/completions/dunecontrol

and add bin to your path variable

export PATH=$PATH:$DUNE_COMMON_ROOT/bin

Now you can enjoy

$ dunecontrol --o[TABTAB]
--only=  --opts=

and friends.

DUNE 2.3.0 Released

We are pleased to announce the release of the new stable version 2.3.0 of the Dune core modules. Dune 2.3.0 brings not only one and a half years’ worth of bug fixes but also some nice additonal features. The Clang compiler is now better supported, UGGrid gained more parallel features, dune-istl got support for UMFPACK as an additional direct linear solver backend, and all modules can now be built using the experimental CMake build system.

For further improvements, deprecations, and clean-ups, have a look at the release notes.

DUNE-FEM Course (February 27 to March 07, 2014)

The principal focus of the course is on the discretization of diffusion dominated boundary problems with continuous finite elements with the DUNE-FEM discretization module. Naturally, this implies that the course has also to give some insight into C++ programming techniques, installation of DUNE, usage of the DUNE-core modules during the first days.

Lessons will be daily, 09:00-15:00 in the first week and 09:00-12:30 in the second week. The focus of the ``free time” in the second week will be on a self-dependent implementation of a model problem, including verification and visualization of the simulation results.

The course forms an elective part of the regular M.Sc. curriculum at the Math Department at the University of Stuttgart, which explains the “uncompact” format of the block-course. However, participants from other universities are welcome as long as there are free capacities. External participants will be charged a fee of 50 EUR for course material and infrastructure (coffee breaks).

Contact and course venue: Claus-Justus.Heine@IANS.Uni-Stuttgart.DE Numerical Mathematics for High Performance Computing (NMH) Institute for Applied Analysis and Numerical Simulation (IANS) Faculty of Mathematics and Physics, Stuttgart University Pfaffenwaldring 57 70569 Stuttgart

Dune 2.3beta2 Released

A second set of release candidates for the upcoming 2.3 release is now available. This includes all core modules. You can download the tarballs from our download page. Please download, build, and install them. It would be nice to test them with your custom modules. Please report the problems that you encounter in our bugtracker. Feedback is also appreciated, if everything works on your system.

DUNE/PDELab Course (March 24-28, 2014)

This one week course will provide an introduction to the most important DUNE modules and especially to DUNE-PDELab. 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. Topics covered are the solution of stationary and time-dependent problems, as well as local adaptivity, the use of parallel computers and the solution of non-linear PDE’s and systems of PDE’s.

Registration deadline: Friday March 7, 2014 Dates: March 24, 2014 - March 28, 2014

Course venue: Interdisciplinary Center for Scientific Computing University of Heidelberg, Im Neuenheimer Feld 350368 69120 Heidelberg, Germany

Fee: The fee for this course is 200 EUR including course material, coffee and lunch breaks as well as course dinner on Wednesday.

For registration and further information see http://conan.iwr.uni-heidelberg.de/dune-workshop/.

Dune 2.3beta1 Released

A first set of release candidates for the upcoming 2.3 release is now available. This includes all core modules. You can download the tarballs from our download page. The modules are also available from Debian Experimental. Please go and test, and report the problems that you encounter.

UG patch 11 released

We have released a new version of the UG patch file. The new patch level number is 11. This is the first release known to work seamlessly with the new CMake build infrastructure of the trunk version and planned 2.3 release of the core modules.

Dune developer and user meetings in Aachen

On Sep. 26. and Sep. 27 the Dune core development team gathered at the RWTH Aachen to plan and discuss current development issues of the Dune core modules. Minutes of the meeting are available. A new stable release 2.3 is planned for the end of this year.

Starting on the day before, a user workshop was held at the same location. It gathered around 25 users and developers of the Dune software systems, from academia and industry. There were talks about applications, talks about technical details, and lots of discussion. Look here for the full program.

Dune on imaginary.org

Check out dune-ash, a simulator for the distribution of vulcano ash in the atmosphere, which made it to imaginary.org!

Google summer of Code students for Dune announced

Google Summer of Code 2013 Creative Commons License

We are happy to let you know, that this years Google summer of code projects have been announced on May 28, 2013. Dune, as an accepted mentoring organization, is glad that two students will work on DUNE during summer.

Miha Čančula will work on a performance testing framework. This will allow us to regularly review the performance of sample simulations/programs and help us to prevent/identify changes that hurt the performance of our framework. This project is mentored by Christian Engwer and Christoph Grüninger.

Xiaoxue Gong will work on visualizing psurface objects used in DUNE in Paraview. The Python bindings of Paraview will be used to accomplish this goal. This project will be mentored by Oliver Sander and Markus Blatt.

Dune repositories migrated to Git

The Dune core modules have been migrated from Subversion to Git. If you have been following the development of Dune on the SVN trunk, you will need to replace your Subversion checkouts with clones of the Git repositories. You can find information on how to do so on the new Git download page. While the SVN repositories will not be removed in the near future, they are frozen and will not be updated anymore. On our wiki you can find a description of the repository layout and a collection of guides to using Git with our repositories.

Git will make it a lot easier for users to contribute patches to Dune. We have started to compile some information on the process to make sure your patches go into Dune with a minimum amount of hassle for both patch submitters and Dune developers.

Happy committing, branching, rebasing, merging, bisecting and whatever other crazy things you might want to do in Git!

Update: Thanks to Steffen, the dune-grid-glue repository has also moved to git.

Update: Some Wiki pages are obsolete now.

New UG Patch File Allows Dynamic Load-Balancing of Node Data

We have released a new version of the UG patch file. The new patch level number is “10”. It brings many improvements for running UG on machines with larger processor numbers. Also, it allows to do dynamic load-balancing with node data in both 2d and 3d grids. Consult the changelog for details.

2nd DUNE User Meeting, Aachen, September 25-26, 2013

We cordially invite all DUNE users to participate in the 2nd DUNE User Meeting 2013 to be held in Aachen September 25-26, 2013. This is a meeting for our users to showcase how they are using DUNE, foster future collaborations, and present their needs to the DUNE community.

The format of the meeting will be rather informal and similar to the Finite Element Fair. This means that every participant will be able to give a presentation. Presentations should be prepared such that the time needed for presenting is held flexible, i.e. ranging from a few minutes of presentation time to about half an hour. At the start of the meeting we will divide the available presentation time between the speakers and choose the order of the speakers randomly.

Please indicate your interest and whether you would like to give a presentation in the wiki. Although there is no fixed deadline, we would appreciate registering as soon as possible.

Update: Some Wiki pages are obsolete now.

Dune is part of GSOC2013

Google Summer of Code 2013 Creative Commons License

We are happy to let you know, that Dune has been accepted as a mentoring organization in Google Summer of Code 2013. Google is offering students stipends to write code for Dune this summer. Starting from monday, april 22th, 12 UTC, you can apply as a student at google-melange.

We have put together a short list of possible project ideas, we had in mind. This list is not exclusive, so if you have a good idea, feel free to discuss with us.

Further information can be found on the official GSOC2013 page of Dune.

Dune-SPGrid Released

A new, very efficent implementation of a structrued, parallel grid (Dune-SPGrid) has been released. The current version (2012.12) is compatible with version 2.2 of the Dune core modules. Compared to YaspGrid, it can communicate data on all codimensions and supports periodic boundary conditions through the same interface supported by AlbertaGrid and ALUGrid.

PDELab 1.1.0 Released

The PDELab developers are proud to announce the 1.1 release of PDELab. This release is mostly a bug-fix release, but it also contains a number of new features, most importantly a new boilerplate layer to reduce the amount of code required to get a standard PDELab program up and running. It has also been tested with the recent 2.2.1 release of the Dune core modules. An overview of the changes in this release and a list of any caveats to consider can be found in the release notes. For further information please see the PDELab homepage.

Dune 2.2.1 Released

We are proud the announce the release of the new stable version 2.2.1 of the Dune core modules. Dune 2.2.1 is a bugfix release based on the previous 2.2 release. We have made every effort to backport all bugfixes from our development branch. These include various fixes to better support newer compilers like g++-4.7 and clang and newer versions of the external software used. Dune 2.2.1 is supposed to be fully backward compatible to the 2.2 release. To get the latest bugfixes users of Dune 2.2 are highly advised to switch to the new release. You can read the release notes for all the details. Tarballs and svn access is available on our download page. We hope you enjoy this new release, and recommend it to your friends and family. If you encounter any problems please let us know by way of the bugtracker.

Dune 2.2.1beta1 Released

A first set of release candidates for the upcoming bugfix 2.2.1 release is now available. This includes all core modules. You can download the tarballs from our download page. Please go and test, and report the problems that you encounter.

DUNE PDELab Spring Course, Heidelberg (Germany), March 11-15, 2013

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.

DUNE-PDELab is a powerful tool for implementing discretisations of partial-differential equations. It helps to substantially reduce the time to implement discretizations and solvers for (systems of) PDEs based on DUNE. It is not only suitable for rapid prototyping but also for building highly performant simulation software and is used by a variety of projects already.

This one week course will provide an introduction to the most important DUNE modules and the PDELab finite element framework based on DUNE. Topics covered are the solution of stationary and time-dependent problems, as well as local adaptivity, the use of parallel computers and the solution of non-linear PDE’s and systems of PDE’s.

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. A solid background on numerical methods for the solution of PDEs is expected.

Registration deadline: Sunday February 24 2013 Dates: March 11 2013 - March 15 2013

Course venue: Interdisciplinary Center for Scientific Computing University of Heidelberg, Im Neuenheimer Feld 350368 69120 Heidelberg, Germany

Fee: The fee for this course is 200 EUR including course material, coffee and lunch breaks as well as course ice breaker on Monday and course dinner on Wednesday.

For registration and further information see http://conan.iwr.uni-heidelberg.de/dune-workshop/index.html

New ALUGrid Version

ALUGrid version 1.52 has been released. This version only fixes several bugs, most notably

  • a coarsening problem with periodic elements in 2d, and
  • various problems with g++ 4.7.x and clang.

Thanks to all patch contributors who helped to improve ALUGrid. The new version is available from the ALUGrid page.

New UG Patch File Completes Support for 2d Edge Communication

We have released a new version of the UG patch file. The new patch level number is “9”. It completes the support for edge communication in 2d meshes. Also, it brings a few additional fixes and improvements. Consult the changelog for details.

DUNE Binary Packages for openSuse

We are happy to announce that after Debian, now also openSuse added binary packages of DUNE to their repositories.

openSuse includes DUNE in the newest release 12.2. RPMs for the DUNE core modules and dune-PDELab are available from the science repository.

For your convenience, packages for Alberta and ALUGrid are also included.

Reminder: Freiburg Dune School, October 8-12 2012

University of Freiburg, Germany

Note: Registration deadline is Sunday, September 30th 2012.

This one week course held in Freiburg will give an introduction to the Dune core modules including the Dune grid interface library, and the Dune-Fem module.

The course will focus on the numerical treatment of partial differential equations using continuous and discontinuous Galerkin methods. These schemes will be implemented with the Dune-Fem module. The final third part of the course will highlight on the discretization of PDEs on stationary and evolving surfaces.

Further information and a registration form can be found here.

PDELab 1.0.1 Released

The PDELab developers are proud to announce the first public release 1.0.1 of PDELab. Don’t be fooled by the point release, this version is really the first public version and is identical to the never-released 1.0, it only differs by some fixes to the release package of the dune-pdelab-howto module. PDELab 1.0.1 is designed to work with the 2.2 release of the Dune core modules.

PDELab is a discretisation module built on top of the foundation provided by the Dune core modules and provides a powerful toolbox for the numerical solution of Partial Differential Equations using Finite Element Methods, Finite Volume Methods, and Discontinuous Galerkin Methods.

For further information and downloads see the PDELab homepage.

Dune-Fem 1.3.0 Released

The Dune-Fem developers are pleased to announce the release of version 1.3.0 of the Dune-Fem module. The release brings you some new features and eliminates a number of known issues.

Dune-Fem is a discretization module which provides interfaces and implementations for the numerical solution of Partial Differential Equations using Finite Element Methods, Finite Volume Methods, and Discontinuous Galerkin Methods.

For further information and downloads see the Dune-Fem homepage.

Dune in Debian Wheezy

For a while we have been working on packaging the Dune core modules for Debian. Now, a few days ago the first packages of Dune 2.2 have entered Debian Testing, which mean that they will be part of the next Debian release ‘Wheezy’. If you have a Debian Testing installation you can install the packages right now with

sudo apt-get install libdune-grid-dev libdune-istl-dev libdune-localfunctions-dev

(which will also pull in the remaining packages automatically).

Many thanks go to Ansgar Burchardt, who did most of the packaging work.

dune@dune-project.org has been Split by Scope

Our mailing list was getting more and more clogged. To make it easier for people to subscribe to only the mails they want we have split it into three lists: dune@dune-project.org, dune-devel@dune-project.org, and dune-bugs@dune-project.org. For the scope of each list and posting policy please see the mailing lists page. Subscription on all three lists is open for everyone.

Members of the old list have been ported over to all three new lists so they don’t miss anything they were previously subscribed to.

Freiburg Dune School, October 8-12 2012

University of Freiburg, Germany

This one week course held in Freiburg will give an introduction to the Dune core modules including the Dune grid interface library, and the Dune-Fem module.

The course will focus on the numerical treatment of partial differential equations using continuous and discontinuous Galerkin methods. These schemes will be implemented with the Dune-Fem module. The final third part of the course will highlight on the discretization of PDEs on stationary and evolving surfaces.

Further information and a registration form can be found here.

Dune 2.2.0 Released

We are proud the announce the release of the new stable version 2.2 of the Dune core modules. Dune 2.2 brings you few big changes, but many small improvements and lots of API cleanup. You can read the release notes for all the details. Tarballs and svn access is available on our download page. We hope you enjoy this new release, and recommend it to your friends and family. If you encounter any problems please let us now by way of the mailing list or the bugtracker.

Dune 2.2beta2 Released

A second set of release candidates for the upcoming 2.2 release is now available. This includes all core modules. You can download the tarballs from our download page. Please go and test, and report the problems that you encounter. The final release is scheduled for upcoming Sunday, June 3rd.

Dune 2.2beta1 Released

A first set of release candidates for the upcoming 2.2 release is now available. This includes all core modules except for dune-grid-howto, which is stuck due to a build-system bug. You can download the tarballs from our download page. Please go and test, and report the problems that you encounter.

Dune 2.2 Release Branches Created

Today, the release branches for the upcoming 2.2 of the Dune core modules have been created. Instructions on how to obtain these branches are given on our download page, and there is a list of changes in the new release. Please go and test the release branches, and report the problems that you encounter.

Professional DUNE Consulting

We are happy to announce that professional DUNE consulting is now available.

Professional DUNE consulting and commissional work is offered by the DUNE core developer Markus Blatt and his new business.

You will still get the usual support on the DUNE mailinglists, but companies requiring definite response times can now profit from this new offer.

2nd DUNE User Meeting, June 21, 2012, Muenster, Germany. (Canceled)

Update: The DUNE User Meeting 2012 is canceled. The facts that we have three days of PDESoft before and that it overlaps with the developers meeting did not create enough interest. Read the cancellation announcement

After the International Workshop PDE Software Frameworks – 10th anniversary of DUNE, June 18-20, 2012, Münster, Germany, we invite you to participate in the 2nd DUNE User Meeting, June 21, 2012, Münster, Germany.

The venue will be the same as for the PDESoft workshop. Please add your name to the list of participants at the User Wiki page. You are also most welcome to post your ideas for the meeting there.

Update: Some Wiki pages are obsolete now.

New UG Patch File Brings Partial Support for 2d Edge Communication

We have released a new version of the UG patch file. The new patch level number is “7”. The new patch brings partial support for edge communication in 2d meshes. ‘Partial’ because so far edge communication for 2d grids only works on unrefined grids. Hopefully, more will be coming in the future.

The new patch fixes a few linker-related problems. If you are using the svn trunk of dune-grid together with UGGrid in parallel, then you have to update your UG installation, or you will experience linker errors.

dune-fem 1.2.1 maintenance release

A maintenance 1.2.1 version of dune-fem has been released. It fixes various known issues of the dune-fem-1.2.0 release version.

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. For further information, please visit the Dune-Fem section on this page or go to the project homepage directly.

DUNE Spring Course March 19-23, 2012

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. A solid background on numerical methods for the solution of PDEs is expected.

Registration deadline: Sunday February 26, 2012

Course venue: Interdisciplinary Center for Scientific Computing University of Heidelberg, Im Neuenheimer Feld 350368 69120 Heidelberg, Germany

dune 2.1.1 maintenance release

We have just released the 2.1.1 versions of the core modules dune-grid, dune-istl, dune-localfunctions, dune-grid-howto, and dune-grid-dev-howto. They contain a fix for the bug concerning the nullptr test that has molested users of g++-4.6. Together with the previously released dune-common-2.1.1 module these modules now configure and compile with g++-4.6.

The new version is a maintenance release. It does not offer any new features or interface changes, but fixes various important bugs in dune-istl.

We wish you a happy new year where all bugs are easy to find!

dune-common-2.1.1 maintenance release

We have just released dune-common-2.1.1. The new version is a maintenance release. It does not offer any new features or interface changes, but fixes various important bugs.

New ALUGrid Version

ALUGrid version 1.50 has been released. This version adds new features, most notably

  • support for quadrilateral grids in 2d, ALUCubeGrid<2,2>,
  • 2d grids embedded in 3d, providing ALU{Cube,Simplex,Conform}Grid<2,3>,
  • support for ParMETIS (experimental),

and also some bug fixes. The new version is available from the ALUGrid page.

gdb pretty-printers for easier debugging

An initial set of gdb pretty-printers for Dune data structures has been released. Pretty printers transform the gdb output of data structures to make it easier to read. Currently the classes FieldVector, FieldMatrix, and BitSetVector are supported. See the project page for a brief description. Everybody using gdb (or its graphical front-ends) for debugging is invited to try and give feedback.

Thanks go to Jan-Hendrik Peters, who did all the work.

New core module *dune-geometry*

Today we introduced a new core module dune-geometry. It is intended for everything related to the computational domain that doesn’t really fit into a more specific module like dune-grid or dune-localfunctions. It initially starts out with Dune::GeometryType (from dune-common) and the generic reference elements, the quadrature rules and part of the generic geometries (from dune-grid). Kudos to Christoph Grüninger for doing much of the work.

DUNE-FEM 1.2.0 Released

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. Furthermore, a tutorial named Dune-Fem-Howto containing several examples of how to use Dune-Fem is available on the Dune-Fem homepage. For more details, have a look at the Dune-Fem page.

Release of DUNE 2.1

The release includes the four core modules dune-common, dune-grid, dune-istl and dune-localfunctions; and the tutorials dune-grid-howto and dune-grid-dev-howto.

For a list of changes have a look at the release notes.

Warwick DUNE Summer School, June 20-24 2011

University of Warwick, UK

This one week course will give an introduction to the DUNE core modules including the DUNE grid interface library, and the DUNE-FEM module.

The course will focus on the numerical treatment of evolution equations of the form

tU + ∇ · ( F(U) - D(U) ∇U ) + S(U) = 0

using finite-volume, continuous, and discontinuous Galerkin methods. These schemes will be implemented with the DUNE-FEM module.

Further information and a registration from can be found here.

Reminder: DUNE Spring School, April 11-15 2011

University of Freiburg, Germany

Note: The deadline for registration is Thursday, March 31st 2011

This one week course will give an introduction to the DUNE core modules including the DUNE grid interface library, and the DUNE-FEM module.

The course will focus on the numerical treatment of evolution equations in divergence form using continuous and discontinuous Galerkin methods. These schemes will be implemented with the DUNE-FEM module. After an introduction to the DUNE grid interface and DUNE-FEM, the final third part of the course will highlight on the discretization of PDEs on surfaces.

Further information and a registration from can be found here.

Dune 2.1 Release Branch Created

Today we have created the release branch for the next stable release of the Dune core modules. The branch will receive several weeks worth of bugfixing before being released as Dune 2.1.0. If you want to help testing you can download the release branch.

Reminder: DUNE Spring Course, March 21-25 2011

IWR, University Heidelberg, Germany

For registration and further information see http://conan.iwr.uni-heidelberg.de/dune-workshop/index.html

Note: Registration deadline is Sunday, February 27th 2011.

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.

DUNE Spring School, April 11-15 2011

University of Freiburg, Germany

This one week course will give an introduction to the DUNE core modules including the DUNE grid interface library, and the DUNE-FEM module.

The course will focus on the numerical treatment of evolution equations of the form

tU + ∇ · ( F(U) - D(U) ∇U ) + S(U) = 0

using continuous and discontinuous Galerkin methods. These schemes will be implemented with the DUNE-FEM module. After an introduction to the DUNE grid interface and DUNE-FEM, the final third part of the course will highlight on the discretization of PDEs on surfaces.

Further information and a registration from can be found here.

DUNE Spring Course, March 21-25 2011

IWR, University Heidelberg, Germany

http://conan.iwr.uni-heidelberg.de/dune-workshop/

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.

Topics cover:

  • Review of C++ programming techniques
  • DUNE Grid interface
  • Grid IO (pre- and postprocessing)
  • DUNE PDELab
  • Mesh Adaptivity
  • Parallel computations
  • Iterative Solvers
  • Nonlinear problems
  • Time-dependent problems

For registration and further information see http://conan.iwr.uni-heidelberg.de/dune-workshop/index.html

2010 DUNE Developer Meeting

A meeting of all DUNE developers was held on 22. and 23. of November 2010 in Münster.

The results of the DUNE User Meeting and the user poll were dicussed. A major topic was the interface for finite elements, for values in the global space. Further discussions cover small changes and performance improvements in the grid interface. We also elected Carsten Gräser as a new DUNE Core Developer

Please refer to the meating minutes for further details.

UG-3.9.1-patch5 Patch File Released

A new patch file for the UG grid manager has been released, which contains a fix for a bug in the MPI test. The problem occured if configure was run without –enable-parallel.

UG-3.9.1-patch4 Patch File Released

A new patch file for the UG grid manager has been released, which contains a fix for a bug in the MPI test.

UG-3.9.1-patch3 Patch File Released

A new patch file for the UG grid manager has been released. It contains a new flag for UG nodes, to check for leaf nodes. This patch is needed for upcoming changes in the dune UG interface. These changes will fix several problems when running ug in parallel.

UG-3.9.1-patch2 Patch File Released

A new patch file for the UG grid manager has been released. It contains mainly build system fixes and improvements, but should also speed up the creation of very large grids. See the changelog for details. From this release on we will start to use proper versions for patched UGs (previously they were all called UG-3.9.1).

Users of dune-grid revision 7008 and lower may choose to update their UG installation, but this is not required. The UG-3.9.1-patch2 patch set is mandatory for later revisions.

DUNE-FEM 1.1.0 Released

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. Furthermore, a tutorial named Dune-Fem-Howto containing several examples of how to use Dune-Fem is available on the Dune-Fem homepage. For more details, have a look at the Dune-Fem page.

New ALUGrid Version

ALUGrid version 1.23 has been released. This version contains some bug fixes, for example the one with the incorrect alugrid.pc file. Furthermore, this version enables periodic boundaries in 3d when using the trunk of dune-grid. The new version is available from the ALUGrid page.

Exherbo Packages Available

Packages for the Exherbo Linux distribution are now available. They are kindly provided by Elias Pipping.

Dune User Meeting Announcement

Please register for the Dune User Meeting taking place int Stuttgart on October 6th-8th, 2010, at the meetings homepage.

1st Dune User Meeting

With great help of Bernd Flemisch we can announce that the first Dune User Meeting October 6th-8th 2010 is taking place in (or close to) Stuttgart. Please see the mail archive for more detailed information.

Upcoming Dune users meeting

Bernd Flemisch intents to organize a Dune users meeting in the Stuttgart area. More power to him! The meeting should get the growing Dune community together. Problems, solutions, case studies, new modules can all be presented and discussed. Beer can be had.

There are two possible dates to choose from:

  • 8.-10.9.2010
  • 6.-8.10.2010

If you are interested in joining the meeting, please participate in the doodle poll until Sunday, 18.7. And tell your friends about it.

Packages for Debian available

Finally we have gotten around to packaging the Dune core modules for Debian. Installation of Dune on Debian machines now gets a lot easier! You can download the modules here.

The packages contain the Dune 2.0 release. They are built for Debian Squeeze on a i386 architecture. Please give them some testing. Snapshot packages and packages for other architectures may appear later.

Release of DUNE 2.0

We are pleased to announce the release of Version 2.0 of the “Distributed and Unified Numerics Environment” (DUNE).

The release includes the three core modules dune-common, dune-grid, and dune-istl; and the tutorials dune-grid-howto and dune-grid-dev-howto. Together with these five packages we released the new package dune-localfunctions, which brings a new interface for finite element shape functions to Dune. This package will also become a core module. Besides many smaller things, the most notable changes are:

  • The dune-grid module now features reference elements for arbitrary dimensions. This required a new numbering of sub-entities of elements. This change may affect your code in subtle ways if you depend on a particular numbering!
  • A new grid implementation, the GeometryGrid, has been added. It wraps any other DUNE grid and replaces the geometry by a given other one. It can, for example, be used to transform a 2d Cartesian grid into a helix.
  • The GridFactory interface has been extended. It now allows file readers to pass data associated with a given entity to the user.

For further information, have a look at the release notes.

DUNE 2.0 beta1 available

Today we prepared the first beta for the upcoming DUNE 2.0 release. Everything took a bit longer than expected, which was mainly due to the large number of last-minute-features we decided on in Berlin last November. But the long freeze is approaching an end.

The release will include the three core module dune-common, dune-grid, and dune-istl; and the howtos dune-grid-howto and dune-grid-dev-howto. Together with these five packages we will release the new package dune-localfunctions, which brings a new interface for finite element shape functions to Dune.

Follow the download link, grab the packages, test them!

Update: refer to final release

DUNE Course March 15-19, 2010 - deadline extended!

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.

New ALUGrid Version

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.

Module dune-solvers announced

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.

New ALUGrid Version

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.

DUNE Course March 15-19, 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.

New Patch Set of UG Available

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.

DUNE 1.2.2 Released

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.

DUNE-FEM 1.0.0 Released

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.

Dune User Meeting Evaluation

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.

New Grid Implementation Available: GeometryGrid

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.

DUNE 1.2.1 Released

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.

New numbering in the reference elements introduced

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.

Dune 1.2 Released

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!

Second Release Candidate of Dune 1.2 Available

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.

dune-subgrid released

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.

First Release Candidate of Dune 1.2 Available

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.

Schedule for DUNE Course March 25-27, 2009 is online

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.

New ALUGrid Version

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.

Release Branch for Dune 1.2 created

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

svn checkout https://svn.dune-project.org/svn/dune-common/tags/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.

New ALUGrid Version

ALUGrid version 1.13 has been released. The new C++ standard is now completely supported. The new version is available from the ALUGrid page.

DUNE Course March 25-27, 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.

New UG Patch File

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.

Release of DUNE 1.1.1

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.

New ALUGrid Version

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.

New ALUGrid Version

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.

New list dune-disc-commits

There is a new mailing list dune-disc-commit which all commit messages for the dune-disc package will be sent over.

Update: dune-disc is not developed any further

Release of DUNE 1.1

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.

New tutorial on writing grid implementations

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.

UG patches available

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.

New ALUGrid Version

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.

DUNE Developer Meeting

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.

DUNE short course (March 13-14, 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.

Release of dune-fem 0.9

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.

Release of DUNE 1.0

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.

RSS News Feed

From today on the DUNE News are also available via an RSS 2.0 feed 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.

Reading Facilities for the Star-CD File Format Added

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.

Update: this interface evlved into the generic grid factory interface

Update: the StarCD support was removed in favor of open-source alternatives

Two Papers on DUNE Published as Preprints

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.

Dune 1.0beta6 available

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!

UGGrid supports nonconforming grids

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.

DUNE Summer School in Freiburg

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.

Dune 1.0beta5 available

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!

Website revamp

The restructured DUNE website launched today! You will hopefully find the information more easily.

Dune 1.0beta4 available

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!

Dune 1.0beta3 available

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!

Dune 1.0beta2 available

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.

Moving the DUNE Server

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/

AmiraMesh available for download.

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.

Dune 1.0beta1 is out

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.

New ALUGrid version (0.41)

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.

New ALUGrid version

Dune got updated to the latest version of ALUGrid.

The current version of Dune-ALUGrid will need the latest ALUGrid-library with version number 0.4 to compile. See the librarys ChangeLog for new features and a bug-fix list.

New Domain

Dune now has its own domain.

For a more convenient access to Dune-related information we registered dune-project.org.

New ALUGrid version

Dune got updated to the latest version of ALUGrid.

The current version of Dune-ALUGrid will need the latest ALUGrid-library with version number 0.3 to compile. New implemented features are leaf and level communication for parallel runs.

Great things are going on.

After a longer discussion on the Dune mailing list we decided to split the Dune repository into several repositories according to the module structure. Together with this change we decided to switch our revision control system from CVS to subversion.

After a lot lot hard work the transition is finished. All Dune modules have their own subversion repository. The nightly builds are running again and the webpage is created from the new sources.

Still there are some open issues, especially the documentation is out of sync with the latest changes. For a list of open issues see Peters mail.

1st DUNE Developer Cottage Workshop

During October 5th to 7th nearly all DUNE core Developers attended the first DUNE Developer Cottage Workshop. It took place at the “Schauinsland”-Cottage of the University Freiburg locate in the wonderful, though foggy, scenery of the black forest. The main goal of the meeting were

  • Discuss and start working on things pending for a 1.0 release.
  • Test all grids for DUNE compliance by testing several model problems on most grids.
  • Interface and treatment of boundary elements.
  • A better interface grid adaption and parallel grid methods.

Please refer to the meeting minutes for more details.

9th DUNE Developer Meeting in Heidelberg

Juli 11. the 9th DUNE Developer Meeting took place. The main points we were discussing were

  • Feature freeze for the sequential Grid Interface.
  • Plans for a 1.0 release.
  • Index / Id concept for the Grids
  • Reference Elements.

Please refer to the meeting minutes for more details.

Automated Test Environment

From today on we also have an Automated Test Environment running. The system is integrated into our Automake/Autoconf infrastructure. Every night an automatic test is run on hal. In the future CVS HEAD check and nightly builds on a computer farm can follow.

Update: we are in a transition and currently the automated tests are not used anymore

Public bug tracking system

We recently activated an open-access Bug tracking system. Everybody is invited to check for known bugs and file new reports or feature requests.

Update: we switched to the gitlab internal bug tracker

8th DUNE Developer Meeting in Heidelberg

January 21. the 8th DUNE Developer Meeting took place. The main points we were discussing were

  • the const policy,
  • the Id - concept,
  • the parallel grid interface.
  • the meeting minutes.
First global revision of the grid interface

The grid interface was revised to consequently follow the content view model. This also enables us to follow a strict const policy.

If you need to adapt a grid implementation or an application follow this HowTo (UPDATE: HowTo doesn’t exists any more, all information can be found in the doxygen documentation).

AlbertGrid renamed to AlbertaGrid

Following the renaming of ALBERT to ALBERTA, AlbertGrid has been renamed to AlbertaGrid. The Dune Grid Interface now works with the current ALBERTA version which is available at the ALBERTA homepage.

OneDGrid Reaches Stable State

A new implementation of the grid interface has been added to DUNE. OneDGrid gives you nonuniform one-dimensional grids with local grid refinement and coarsening. It is completely contained in the DUNE repository and can be used without any additional libraries.

6th DUNE Developer Meeting in Freiburg (Breisgau)

Oktober 07. / 08. the 7th DUNE Developer Meeting took place. The main points we were discussing were

  • the parallel and adaptive Grid Interface enhancements,
  • the new matrix / vector classes (dune/istl) introduced by Peter,
  • code cleanup and reorganisation.
  • the meeting minutes.
YaspGrid - reference implementation of the parallel grid interface

Finally the parallel grid interface, as we discussed it on the last DUNE Developer Meeting, is finished. There is a reference implementation in YaspGrid.

If you want to use the parallel interface you must have an MPI implementation available (automake can detect mpich and lam). To learn how to compile your DUNE project with MPI support have a look at dune-tutorial/Makefile.am.

Update: This last statement is outdated!

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