href="4.0.0-vs-5.0.0.html" target="body">here</a>.
</dd>
- <dt>
- <strong>2004/04/12: New example program for PETSc classes and
- parallel computing</strong>
- </dt>
- <dd>
- The step-17 example program shows how to use the new PETSc wrapper
- classes, and how to do large-scale computations with up to many
- millions of unknowns on a cluster of computers. This program shows
- that deal.II is well-suited for truly massive parallel
- computations.
- </dd>
-
<dt>
<strong>2004/03/08: Interfaces to PETSc and METIS</strong>
</dt>
compiler version 7.41.
</dd>
- <dt>
- <strong>2003/08/19: Dependency generation accelerated</strong>
- </dt>
- <dd>
- The script that generates dependency information between
- sources and headers for Makefiles has been rewritten in C++,
- after the old perl script became too slow with the growth of
- the project. The new script is 2-5 times faster than the old one.
- </dd>
-
- <dt>
- <strong>2003/04/30: New report on Nedelec elements</strong>
- </dt>
- <dd>
- The next major version of the library will have support for
- Nedelec elements for H-curl approximations of, for example,
- the Maxwell equations. They were jointly implemented by
- Wolfgang Bangerth and Anna Schneebeli of the University of
- Basel, Switzerland, who has also contributed a
- <a href="../reports/nedelec/main.html" target="body">report on the
- derivation and use of these elements</a>. It is available from the
- <a href="../documentation.html" target="body">documentation
- page</a>.
- </dd>
-
<dt>
<strong>2003/04/27: <acronym>deal.II</acronym> now exceeds
of 200,000 lines of code</strong>
3000 lines of code per month.
</dd>
- <dt>
- <strong>2003/02/06: A new multithreading scheme</strong>
- </dt>
- <dd>
- A new multithreading scheme has been put into place; it has
- essentially the same functionality as the previous one, but
- is simpler and more intuitive to use. It also allows to call
- functions on a new thread that return values, and later
- retrieve the returned value when the thread has finished. Some
- documentation of the scheme can be found
- <a href="../reports/new-threads/index.html" target="body">on this
- page</a>.
- </dd>
-
<dt>
<strong>2003/01/24: deal.II runs on AIX 5.1</strong>
</dt>
Intel icc 7.0 compiler.
</dd>
- <dt>
- <strong>2002/11/27: Modified Incomplete Cholesky decomposition</strong>
- </dt>
- <dd>
- There is now a Modified Incomplete Cholesky (MIC) decomposition in
- deal.II, which has been kindly contributed by
- <a href="mailto:cheffo@riflexo.com">Stephen Kolaroff</a>.
- </dd>
-
- <dt>
- <strong>2002/10/14: Red Hat's gcc 2.96 supported</strong>
- </dt>
- <dd>
- deal.II can now also be built with Red Hat's gcc 2.96 version. This
- should make it easier for users of Red Hat 7.x distributions, since
- they will no longer have to up- or downgrade their
- compilers. However, some problems remain; for more information, refer
- to the <a href="../faq.html" target="body">Frequently Asked
- Questions</a> section.
- </dd>
-
<dt>
<strong>2002/06/28: deal.II 64-bit ready</strong>
</dt>
IA64 systems.
</dd>
- <dt>
- <strong>2002/06/17: New report on assembling matrices</strong>
- </dt>
- <dd>
- There is now
- <a href="../reports/assemble/index.html" target="body">a new report
- on assembling matrices</a> available from the
- <a href="../documentation.html" target="body">documentation
- page</a>. The main focus is assembling of matrices for
- vector-valued problems, where shape functions are
- vector-valued, and may have only one or more non-zero vector
- components.
- </dd>
-
- <dt>
- <strong>2002/06/10: Supporting framework for vector-valued
- finite elements committed</strong>
- </dt>
- <dd>
- <acronym>deal.II</acronym> supports vector-valued finite
- elements for a long time, but only by composing them of
- scalar elements. This excluded Nedelec or Raviart-Thomas
- type elements, for which every shape function is
- vector-valued and non-zero in all components. Support for
- such elements is now available, and will be part of the next
- version.
- </dd>
-
<dt>
<strong style="color:red">2002/06/06: Version 3.4 released</strong>
</dt>
optimized code for Intel's new IA-64 architecture.
</dd>
- <dt>
- <strong>2002/05/05: New example program demonstrating
- duality based error estimators</strong>
- </dt>
- <dd>
- The step-14 example program in the tutorial demonstrates the
- use of duality based error estimation strategies which have
- been the focus of the Heidelberg group (from which the main
- authors come) for the last years. Some more strategies for
- modular and extensible programming are also discussed.
- </dd>
-
- <dt>
- <strong>2002/04/30: Multi-threading support using POSIX</strong>
- </dt>
- <dd>
- In all previous versions, <acronym>deal.II</acronym> used
- the <a href="http://www.cs.wustl.edu/~schmidt/ACE.html"
- target="_top">ACE (Adaptive Communications Environment)</a>
- library to support cross-platform threading
- facilities. While this is still supported, the default way
- is now to use the POSIX threading functions that are
- available on many systems.
- </dd>
-
- <dt>
- <strong>2002/04/16: New example program showing
- software design practices for finite element programs</strong>
- </dt>
- <dd>
- The new step-13 example program in the tutorial explains a
- number of techniques to write modular and extensible finite
- element software.
- </dd>
-
<dt>
<strong>2002/03/07: New web home www.dealii.org and new
email addresses</strong>
bookmarks and mail addresses accordingly.
</dd>
- <dt>
- <strong>2002/02/11: New support for Tecplot binary output</strong>
- </dt>
- <dd>
- Benjamin Shelton Kirk contributed binary
- <a href="http://www.amtec.com">Tecplot</a> support.
- This feature can be used to create more efficient data files
- in the Tecplot FEBLOCK finite element format. For more information
- look <a href="2002/3.3.0-vs-3.4.0.html" target="body">here</a>.
- </dd>
-
<dt>
<strong>2002/02/01: Version 3.3 released</strong>
</dt>
with a rate almost constant at 3000 lines of code per month.
</dd>
- <dt>
- <strong>2002/01/30: New output formats OpenDX and Tecplot</strong>
- </dt>
- <dd>
- Guido Kanschat and Benjamin Shelton Kirk contributed output
- for OpenDX and Tecplot graphics formats, which are now
- supported along a long list of other graphics
- format. Switching output formats is possible at run time of
- applications.
- </dd>
-
- <dt>
- <strong>2001/12/07: Memory allocation and access checked
- with <code>purify</code></strong>
- </dt>
- <dd>
- We checked all example and test programs as well as a number of
- large applications against the memory checker
- <code>purify</code>. Only three memory leaks were found and
- fixed. No invalid memory accesses were found. We believe
- that no major memory leaks exist in the library any more.
- </dd>
-
- <dt>
- <strong>2001/11/21: New example program demonstrating
- discontinuous Galerkin methods</strong>
- </dt>
- <dd>
- A new example program (step-12 of the tutorial) explains the
- assembling of matrices arising in discontinuous Galerkin
- methods.
- </dd>
-
<dt>
<strong>2001/09/28: Version 3.2 released</strong>
</dt>
<a href="2001/3.1.0-vs-3.2.0.html" target="body">here</a>.
</dd>
- <dt>
- <strong>2001/09/24: Eulerian mapping</strong>
- </dt>
- <dd>
- Michael Stadler has kindly provided an implementation of
- Eulerian mappings, i.e. a mapping between unit cell and real
- space that depends on a given vector field.
- </dd>
-
<dt>
<strong>2001/07/06: Compaq's cxx compiler supported</strong>
</dt>
page</a>.
</dd>
- <dt>
- <strong>2001/03/06: Support for arbitrary mappings</strong>
- </dt>
- <dd>
- The finite element classes have been redesigned from scratch
- to allow for arbitrary mappings, as well as for elements
- that depend on the actual cell shape, such as edge
- elements. Presently, we have continuous and discontinous
- Lagrange elements of arbitrary order implemented, as well as
- polynomial mappings between unit and real cell of arbitrary
- order. There is also a cubic C<sup>1</sup> mapping
- implemented.
- </dd>
-
<dt>
<strong>2001/02/26: Support for Subroutines from the Harwell Subroutine
Library (HSL)</strong>
<a href="2000/3.0.0-vs-3.1.0.html" target="body">here</a>.
</dd>
- <dt>
- <strong>2001/01/16: Correct namespace <code>std::</code>
- scoping</strong>
- </dt>
- <dd>
- All identifiers that the C++ standard (see
- <a href="http://www.cygnus.com/misc/wp/dec96pub/"
- target="_top">this page</a> for the public draft -- the
- standard itself is not available online for copyright reasons)
- mandates to be in namespace <code>std::</code> are correctly
- prefixed by the namespace name. While previous gcc compilers
- accepted these names also without the prefix, gcc 3.0 will
- require them, as do some commercial compilers.
- </dd>
-
- <dt>
- <strong>2000/11/27: Memory consumption monitoring</strong>
- </dt>
- <dd>
- Almost all classes in the library that store significant
- amounts of data now have a function
- <code class="member">memory_consumption</code> that returns an
- estimate of the amount of memory (in bytes) used up by this
- class. These functions may be used to track down where memory
- bottlenecks are located.
- </dd>
-
- <dt>
- <strong>2000/08/30: New report on dimension
- independent programming</strong>
- </dt>
- <dd>
- There is now a
- <a href="../reports/dimension-independent/index.html"
- target="body">new report available online</a> on the basic
- ideas of dimension independent programming, as done in
- <acronym>deal.II</acronym> using all this
- `<code>template <int dim></code>' stuff. This report
- is in fact an article in the proceeding of the IMACS
- conference (see the <a href="../publications/toc.html"
- target="body">publications page</a> for full bibliographical
- reference, it is publication 2000/4).
- </dd>
-
<dt>
<strong>2000/08/07: deal.II 3.0.1</strong>
</dt>
(<a href="2000/03.html" target="body">Announcement</a>)
</dd>
- <dt>
- <strong>2000/06/28: kdoc2</strong>
- </dt>
- <dd>
- Our API documentation is now generated by
- <code class="program">kdoc2</code>, the successor of the
- <code class="program">kdoc1</code> script that was used
- previously. The generated pages are now much nicer and
- should also present a clearer view of the information
- contained.
- </dd>
-
- <dt>
- <strong>2000/04/14: New multithreading scheme</strong>
- </dt>
- <dd>
- The new multithreading scheme is now in
- place; furthermore, there is a corresponding report available
- (<a href="2000/02.html" target="body">full text</a>).
- </dd>
-
<dt>
<strong>2000/04/13: deal.II 3.0 announced</strong>
</dt>
projects / dealii.git / commitdiff