The deal.II news page

From: Wolfgang Bangerth Date: Sun, 1 Jun 2014 21:03:03 +0000 (+0000) Subject: No longer keep the news with the development version. Rather, keep it with the X-Git-Tag: v8.2.0-rc1~434 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30ea2e3b8852384687bca2b4c222f8d583da34c3;p=dealii.git No longer keep the news with the development version. Rather, keep it with the top-level project pages. git-svn-id: https://svn.dealii.org/trunk@32995 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/doc/news/news.html b/deal.II/doc/news/news.html index 3caea173e7..06e1f09444 100755 --- a/deal.II/doc/news/news.html +++ b/deal.II/doc/news/news.html @@ -1,1004 +1,23 @@ + "http://www.w3.org/TR/html4/loose.dtd"> - - The deal.II news page + + The deal.II news page - + - - - - - + + + + + - - - - + - - - + - - - - -

News on deal.II

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- This page lists news and announcements on - deal.II in reverse chronological order. If you - send us extensions to the library, please feel free to also send a - patch to this file such that we can announce your contributions in - your own words. -

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- Please refer to the archive of the deal.II - mailing list for additional news. -

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Recent changes

- Changes in the library since the last major release are - here. -

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- 2013/12/24: Version 8.1 released -: - deal.II version 8.1 was released today. A full list of changes can be - found here. -
- deal.II can be downloaded at - this site. -
- 2013/12/18: step-26 for the heat equation -: - step-26 fills a long-standing gap: There was no tutorial - program solving the heat equation. There was also no tutorial - showing in relatively easy terms how to do adaptive meshes - in time dependent problems. This program fills both of these - needs. -
- 2013/11/01: step-42 solves an elasto-plastic contact problem -: - step-42, written by Jörg Frohne, Timo Heister and Wolfgang - Bangerth, shows how to solve an elasto-plastic contact problem. - The program is an extension of step-41 to a much more complex - equation (nonlinear elasto-plasticity) and also demonstrates - how to compute solutions for such problems in parallel. -
- 2013/10/01: step-51 implements an HDG method -: - step-51, contributed by Martin Kronbichler and Scott Miller, - implements a hybridized discontinuous Galerkin method for the scalar - convection-diffusion equation. The method uses standard DG terms for - describing the element interior but couples the local sub-problems - using face elements. The local contribution is eliminated from the - global linear system by a static condensation process. -
- 2013/07/24: Version 8.0 released -: - deal.II version 8.0 was released today. This is a major new - release, featuring the conversion of the configuration and - build system to CMake, - support for parallel computations with more than 4 billion - unknowns, and many more. A full list of changes can be - found here. -
- deal.II can be downloaded at - this site. -
- 2013/06/05: 64-bit version of deal.II -: - Because the global dof index variables in deal.II were of type - unsigned int, it was not possible to create a dof_handler with more than - 4.3 billions of unknowns. The 64-bit version of deal.II uses unsigned long - long int and thus, allows for 18e18 unknowns. -
- 2013/03/07: Build system switched to CMake -: - After having used Autoconf as the configuration and build system - since the beginning of deal.II in 1997, we have now switched to - CMake. This implementation, - contributed by Matthias Maier of Heidelberg University, has taken - more than half a year, consists of more than 10,000 lines, and - touches every aspect of the installation process. It provides a more - modern interface to and more reliable way of interacting with other - packages. Furthermore, it no longer relies on shell scripts and - therefore integrates more easily with integrated development - environments as well as Microsoft Windows without Cygwin. -
- 2013/02/27: Version 7.3 released -: - Version 7.3.0 was released today. This release provides one new - tutorial, work on parallel linear algebra, the new FE_Q_DG0 element, - and a large number of enhancements and bug fixes throughout the - entire library. A complete list of new features is - found here. -
- 2012/09/03: Version 7.2 released -: - Version 7.2.0 was released today. This release provides four - new tutorial programs, a framework for matrix-free - computations, and a large number of enhancements and bug fixes - throughout the entire library. A complete list of new - features is found here. -
- 2012/06/06: step-43 — an efficient solver for - two-phase flow -: - The step-21 tutorial program was the first program in the - deal.II tutorial to demonstrate the solution of two-phase flow - problems, but it suffered from the fact that it was very - slow. step-43 demonstrates some of the techniques that can be - used to make solvers for such problems more efficient and - accurate. -
- 2012/06/03: New step-15 -: - Step-15 used to be a program that demonstrated techniques for solving - a rather quirky, nonlinear, 1d problem. It was an interesting problem, - but it served little purpose in teaching deal.II or in demonstrating - nonlinear solution techniques. It has now been replaced by a more - illustrative example, contributed in large part by Sven Wetterauer, in - which we solve the nonlinear elliptic minimal surface equation using a - Newton iteration. -
- 2012/05/05: Matrix-free implementation framework -: - A matrix-free framework has been contributed by Katharina - Kormann and Martin Kronbichler. The implementation is memory - efficient and includes parallelism via MPI for distributed - meshes, threads for shared-memory computations, and usage of - processors' vector units. The two new tutorial programs step-37 - (multigrid solver) and step-48 (nonlinear wave equation with - distributed grid) demonstrate the new features. -
- 2012/04/02: step-44 — a finite strain - elasticity solver -: - step-44, contributed by Andrew McBride and Jean-Paul - Pelteret, demonstrates one approach to modelling large - deformations of nearly-incompressible elastic solids. The - elastic response is governed by a non-linear, hyperelastic - free-energy function. The geometrical response is also - nonlinear, i.e., the program considers finite deformations. -
- 2012/04/02: step-41 solves the obstacle problem -: - step-41, a program contributed by Jörg Frohne, shows - how to solve the obstacle problem. This problem describes - the deformation of a body subject to an inequality - constraint that arises from the fact that the deformation is - constrained by contact of the body with some external - obstacle. The program uses the primal-dual active set method - to solve this problem. -
- 2011/10/09: Version 7.1 released -: - Version 7.1.0 was released today. This release provides two - new tutorial programs and many smaller enhancements - throughout the entire library. A complete list of new - features is found here. -
- 2011/10/06: step-32, a massively parallel thermal - convection solver -: - Long in the making, the step-32 tutorial program - demonstrates how to solve the Boussinesq equations - describing thermal convection on large numbers of - processors. -
- 2011/04/30: step-46 demonstrates coupling different models - on different parts of the domain -: - step-46 shows how to couple different models defined on subsets of - the domain, in this case Stokes flow around an elastic solid. The - trick here is that variables (here the flow velocity and pressure, - and the solid displacement) do not live on the entire domain, but - only on a part. The point of the program is how to represent this in - source code. -
- 2011/01/09: Version 7.0 released -: - Version 7.0.0 was released today. This release is a huge step - forward, with several significant new features such as support for - thousands or tens of thousands of processors. A complete list of new - features is found here. -
- 2011/01/02: step-38 shows how to solve partial differential - equations on curved manifolds -: - The new step-38 program, contributed by Andrea Bonito and M. Sebastian - Pauletti, shows how to discretize and solve partial differential - equations posed on curved manifolds embedded in higher dimensional - spaces. -
- 2010/12/20: Graphical frontend to edit parameter files -: - Contributed by Martin Steigemann, deal.II now has Qt based graphical - user interface to edit input parameter files for - the ParameterHandler class. The executable is located in - lib/bin/dealii_parameter_gui. -
- 2010/10/25: New directory and library structure -: - deal.II has had a somewhat quirky directory and library structure for - historical reasons, but this has now changed: All include and source - files are now under the top-level include/ - and source directories. Furthermore, we no longer build a - plethora of libraries but only libdeal_II.g.so (debug - version) and libdeal_II.so (optimized version). In - particular, we no longer build different versions of the library for - different space dimensions. -
- 2010/10/23: Distributed mesh functionality available -: - After more than 2 years of work by Timo Heister, Martin Kronbichler, - and Wolfgang Bangerth, and with help by Carsten Burstedde, we have - merged a branch on which we have implemented the functionality - necessary to distribute meshes on hundreds, thousands, or more - processors. An overview of the framework - in which this is implemented is presented in a documentation module, - an accompanying paper, as well as in the new step-40 tutorial program. -
- 2010/07/18: Version 6.3.1 released -: - Version 6.3.1 was released today. This release addresses a number of - problems in release 6.3.0 related to compatibility with certain - compilers, operating systems, and versions of external libraries. - A list of changes between - versions 6.3.0 and 6.3.1 can be found here. -
- 2010/06/25: deal.II on Facebook -: - We built a facebook page titled deal.II today. Please, feel free - to join us there! -
- 2010/06/25: Version 6.3 released -: - Version 6.3.0 was released today, containing several new - tutorial programs, a new threading framework and a framework - for assembling linear systems by just providing the local integrals. - A complete list of changes between - versions 6.2.0 and 6.3.0 can be found here. -
- 2010/06/24: step-39 solves Poisson's equation with - the interior penalty discontinuous Galerkin method on - adaptively refined meshes with multigrid -: - Using the MeshWorker framework, this program highlights the - fact that loops over meshes are very generic and that - building matrices and level matrices and evaluating error - estimates are really the same task. -
- 2010/06/24: The Meshworker framework has been released -: - Using its generic loop and the provided auxiliary classes, - this framework relieves the application programmer from coding - loops over cells, faces, and subfaces, such that focus can remain - on implementation of the local integrals. -
- 2010/06/23: step-45 shows periodic boundary - conditions -: - Contributed by Markus Bürg, the new tutorial program step-45 - demonstrates an often requested feature: periodic boundary - conditions. -
- 2010/02/13: New multigrid, new step-16 -: - Over the last few months, the multigrid implementation has seen - significant rewrites, with much of the work done by Bärbel - Janssen. The goal — now achieved — was to finally fully - support multigrid also for continuous finite elements on adaptively - refined meshes (uniformly refined meshes and discontinuous elements - have worked for a long time). As part of this process, step-16 has - been rewritten and now solves the same problem step-6 solves, just - with a multigrid solver. -
- 2009/10/07: step-35 shows the solution of the - Navier-Stokes equations -: - Step-35, a tutorial program contributed by Abner - Salgado-Gonzalez, shows an implementation of a projection - scheme for the numerical solution of the Navier-Stokes - equations. -
- 2009/07/30: New tutorial program step-36 -: - The new step-36 tutorial program, contributed by Toby D. Young and - Wolfgang Bangerth, shows how to solve eigenvalue problems, using the - Schrödinger equation as an example. -
- 2009/06/05: Version 6.2.1 released -: - deal.II version 6.2.0 contained a couple of minor but - annoying bugs in its interaction with PETSc. The - documentation package also did not include any typeset - formulas. Release 6.2.1 corrects these mistakes. - A complete list of changes between - versions 6.2.0 and 6.2.1 can be found here. -
- 2009/04/27: Version 6.2 released -: - Version 6.2.0 was released today! - A complete list of changes between - versions 6.1.0 and 6.2.0 can be found here. -
- 2009/04/14: New tutorial program step-34 -: - step-34, written by Luca Heltai, demonstrates the ability of - deal.II to discretize and solve boundary integral equations - on curved manifolds. -
- 2008/12/05: Support for meshes embedded in - higher dimensions -: - Based on work by Cataldo Manigrasso and Luca Heltai - developed over the last few months on a branch, deal.II now - supports meshes that are embedded in higher space - dimensions. This allows, for example, to solve equations on - the surface of a sphere (e.g. to use boundary element - methods for exterior problems). -
- 2008/11/14: New tutorial program step-31 -: - The latest tutorial program, step-31, is contributed by - Martin Kronbichler and Wolfgang Bangerth and shows the - solution of the Boussinesq approximation to thermally driven - convection in an incompressible fluid. -
- 2008/09/10: New tutorial program step-28 -: - step-28, contributed by Yaqi Wang, illustrates the solution - of a coupled system of diffusion equations relevant to - nuclear reactor physics where we use different meshes for - different components of a vector-valued solution. -
- 2008/08/21: deal.II now exceeds - of 400,000 lines of code -: - Since today, deal.II has more than 400,000 - lines of code. The rate of growth continues to be close on - par with the 3000 lines of code per month that we have had - over many years already, with no signs of abating activity! -
- 2008/07/08: Support for anisotropic mesh refinement -: - Contributed by Tobias Leicht as well as Ralf Hartmann, deal.II - now supports anisotropic refinement of meshes. This functionality - is explained in the step-30 tutorial program. -
- 2008/05/28: Version 6.1 released -: - Version 6.1.0 was released today! - A complete list of changes between - versions 6.0.0 and 6.1.0 can be found here. -
- 2008/05/23: step-33 illustrates the Euler equations -: - step-33, - a tutorial program written mostly by David Neckels, illustrates how - the Euler equations of compressible inviscid gas dynamics can be - solved. More generally, the program also provides a framework for - the solution of arbitrary hyperbolic, nonlinear conservation laws. -
- 2008/03/28: step-22 demonstrates solving the Stokes - equations -: - The new step-22 - tutorial program, written by Martin Kronbichler and Wolfgang - Bangerth, shows how to solve, and in particular how to solve - efficiently, the Stokes equations that describe viscous - incompressible fluid flow. -
- 2007/10/31: step-29 tutorial program added -: - Contributed by Moritz Allmaras, the step-29 tutorial program - explains how problems involving complex numbers can be treated in - deal.II. In the example, - the complex-valued solution to a Helmholtz equation is split into - real and imaginary parts and a vector-valued finite element field - is used to discretize them seperately. The program also demonstrates - how quantities derived from the finite element solution can be directly - included in the output by using the new DataPostprocessor - class. -
- 2007/09/07: Version 6.0 released -: - Version 6.0.0 was released today! - A complete and long list of changes between - versions 5.2.0 and 6.0.0 can be found here. -
- 2007/08/09: step-27 demonstrates hp technology -: - The new step-27 - tutorial program finally demonstrates how to use the - hp finite element technology that has been part of deal.II for some - 18 months now. It solves a Laplace equation with hp finite elements - and shows how to set finite element degrees, assemble matrices on - cells with varying polynomial degrees, and how to compute a simple - criterion for estimating the local Sobolev smoothness of a function. -
- 2007/07/16: Wilkinson Prize -: - The principal authors of deal.II—Wolfgang - Bangerth, Ralf Hartmann and Guido Kanscht—have received the J. H. Wilkinson - Prize for Numerical Software for their creation of and work on - the deal.II library. The prize committee particularly noted the - reliability and usability of the software and the quality of the - documentation. -
- We want to take the opportunity to thank our user community for their - support over the years that kept us working on this software. We - consider this award motivation to continue this work! -
- 2007/02/09: Support for previously unorientable meshes -: - Up to now, in 3D only 'orientable' meshes could be used in - deal.II, where all lines are in standard orientation and the - faces can be either in standard orientation or with a - reversed normal. This has been generalized such that now all - hexahedral meshes can be used. -
- 2006/10/30: step-21 is finished -: - Step-21 demonstrates the time dependent flow of a multiphase fluid - through a porous medium. It is an extension of step-20, using a mixed - formulation and block solvers. -
- 2006/10/03: step-23/24/25 are finished -: - The step-23, step-24 and step-25 tutorial programs have been added, - demonstrating how to solve the time dependent wave equation - and a nonlinear variant of it, the sine-Gordon equation. -
- 2006/08/24: deal.II is now part of the - SPEC CPU 2006 benchmark -: - A modified version of the deal.II library and the - step-14 tutorial program has been incorporated into the industry - standard SPEC CPU 2006 - benchmark testsuite that is used to determine the speed of - computers. It is part of the floating point testsuite CFP2006 as benchmark - 447.dealII. -
- The inclusion of our software into an industry - standard benchmark testsuite will lead to better support of compilers - and machines for the kind of program we write, in particular for - unstructured hierarchical mesh computations. This will in turn - help make our codes run faster on future systems. -
- 2006/2/12: step-20 is finished -: - The new step-20 tutorial program shows how to use Raviart-Thomas - elements to solve a mixed formulation of the Laplace equation. It - also demonstrates the use of block matrices and vectors, and how they - can be used to define more complex solvers and preconditioners - working on the Schur complement. -
- 2006/1/3-5: First User Workshop -: - After 8 years of existence, it was time to have the first user - meeting. During a 3-day workshop held in Heidelberg, topics of - software development, use of deal.II for applications, and future - directions were discussed by about a dozen developers and users. -
- 2005/12/20: hp functionality merged -: - After the code had been developed and maintained on a branch for 3 - years by Oliver Kayser-Herold and Wolfgang Bangerth, it has now been - merged into the main development, and will be available for the next - release. -
- 2005/09/17: Version 5.2 released -: - Version 5.2.0 was released today! - A complete and long list of changes between - versions 5.1.0 and 5.2.0 can be found here. -
- 2005/09/09: Two more tutorial programs -: - Two more tutorial programs, step-18 and step-19, are now - available. step-18 shows how to solve time-dependent but quasi-static - elasticity programs in parallel. step-19 demonstrates some data - handling and parameter file techniques. -
- 2005/03/29: deal.II now has a Wiki -: - Hosted by Luca Heltai, there is now a wiki. See the link from the - deal.II front page. Users of - deal.II are encouraged to visit it, and, - as is usual with wikis, edit pages freely and post their - experiences and code snippets they want others to know about. -
- 2005/03/07: Function parser library integrated -: - Luca Heltai has contributed code that integrates a third - party function - parser library) that takes a string describing a - mathematical function, and returns an object that can be used in - all places where function objects are used in deal.II. -
- 2004/12/24: Version 5.1 released -: - Version 5.1.0 was released today! - A complete and long list of changes between - versions 5.0.0 and 5.1.0 can be found here. -
- 2004/10/21: Q_r elements of arbitrary order now - support hanging node constraints also in 3d -: - Lagrange elements previously had hanging node constraint matrices - hard coded in 3d, which were only available for r=1,2. Thanks to - code written by Oliver Kayser-Herold, this information is now - computed on-the-fly, which allows the use of Lagrange elements of - arbitrary order also in 3d on meshes with hanging nodes. -
- 2004/05/25: Version 5.0 released -: - Version 5.0.0 was released today! - A complete and long list of changes between - versions 4.0.0 and 5.0.0 can be found here. -
- 2004/03/08: Interfaces to PETSc and METIS -: - In order to support parallel computations, we now have interfaces to - both the PETSc library for sequential and parallel linear algebra, - as well as to the METIS library for domain partitioning. -
- 2004/03/08: MIPSpro compiler version 7.41 supported -: - deal.II now also supports compilation on SGIs by the MIPSpro - compiler version 7.41. -
- 2003/06/06: Version 4.0 released -: - After one year, we made it and released Version 4.0.0 today! - A complete list of changes between - versions 3.4.0 and 4.0.0 can be found here. -
- 2003/04/27: deal.II now exceeds - of 200,000 lines of code -: - Since today, deal.II has now more than 200,000 - lines of code. The rate of growth continues to be close to - 3000 lines of code per month. -
- 2003/01/24: deal.II runs on AIX 5.1 -: - Using gcc3.2, deal.II can now also be compiled on AIX systems - with the PowerPC chip. -
- 2002/12/18: deal.II runs on Mac OS X 10.2 -: - Some changes have been made to allow compiling and running deal.II on - Mac OS X 10.2 systems. -
- 2002/12/05: Intel ICC 7.0 compiler supported -: - deal.II now also supports compilation by the recently released - Intel icc 7.0 compiler. -
- 2002/06/28: deal.II 64-bit ready -: - deal.II also runs on 64-bit systems without changes, as - tests on a Sparc machine with Solaris 9 in 64-bit mode have - shown. We also have reports of people running deal.II on - IA64 systems. -
- 2002/06/06: Version 3.4 released -: - Today, version 3.4 of the deal.II library - has been released. A complete list of changes between - versions 3.3.0 and 3.4.0 can be found here. -
- 2002/05/22: Intel ECC Itanium compiler now supported -: - aclocal.m4 has been changed to detect the Intel ECC - compiler for Itanium systems. The ECC compiler can produce - optimized code for Intel's new IA-64 architecture. -
- 2002/03/07: New web home www.dealii.org and new - email addresses -: - The deal.II homepage has been moved to www.dealii.org. Also the email addresses have been - changed. Though the old web home and the old addresses will - be supported for some time we recommend to adjust the - bookmarks and mail addresses accordingly. -
- 2002/02/01: Version 3.3 released -: - Today, version 3.3 of the deal.II library - has been released. A complete list of changes between - versions 3.2.0 and 3.3.0 can be found here. -
- 2002/01/31: deal.II now consists - of 160,000 lines of code -: - All .cc and .h files of - deal.II now sum up to more than 160,000(!) - lines of code. deal.II continues to grow - with a rate almost constant at 3000 lines of code per month. -
- 2001/09/28: Version 3.2 released -: - After a long phase of implementation and testing, we today - released version 3.2 of the deal.II - library. There are many changes between version 3.1 and - release 3.2. A complete list of these changes can be found - here. -
- 2001/07/06: Compaq's cxx compiler supported -: - The present development version now also supports - compilation by Compaq's cxx compiler. See the ReadMe - file for more information on using this compiler. -
- 2001/06/28: deal.II 3.1.2 released -: - Version 3.1.2 is a bug-fix release based on 3.1. A list of - changes between the two versions can be found on - this - page. -
- 2001/05/23: Intel ICC compiler supported -: - The present development version of the library is now fixed - so that it can also be compiled by - Intel's ICC C++ compiler for Linux. -
- 2001/05/17: deal.II 3.1.1 released -: - Version 3.1.1 is a bug-fix release based on 3.1. A list of - changes between the two versions can be found on - this - page. -
- 2001/02/26: Support for Subroutines from the Harwell Subroutine - Library (HSL) -: - The Harwell Subroutine Library (HSL) is a - library that, among much other functionality, offers some - sparse direct solvers. We have added support for an - interface to these solvers to the library. -
- 2001/02/20: Version 3.1 released -: - After a long testing phase, we today released version 3.1 of - the deal.II library. - There are many changes between version 3.0 and release - 3.1. A complete list of these changes can be found - here. -
- 2000/08/07: deal.II 3.0.1 -: - Version 3.0.1 is a bug-fix release based on 3.0. A list of - changes between the two versions can be found on - this - page. - (Announcement) -
- 2000/04/13: deal.II 3.0 announced -: - Today, after 2½ years of development and testing, the - first public release of the deal.II - library was announced (full text). -

- - - - - - - + + This page is now part of the top-level project description. See + this page. +