--- /dev/null
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2014 - 2016 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE at
+// the top level of the deal.II distribution.
+//
+// ---------------------------------------------------------------------
+
+/**
+@page changes_between_8_3_and_8_4 Changes between Version 8.3.0 and 8.4.0
+
+<p>
+This is the list of changes made between the release of deal.II version
+8.3.0 and that of 8.4.0. All entries are signed with the names of the
+author.
+</p>
+
+
+
+<!-- ----------- INCOMPATIBILITIES ----------------- -->
+
+<a name="incompatible"></a>
+<h3 style="color:red">Incompatibilities</h3>
+
+<p style="color:red">
+Following are a few modifications to the library that unfortunately
+are incompatible with previous versions of the library, but which we
+deem necessary for the future maintainability of the
+library. Unfortunately, some of these changes will require
+modifications to application programs. We apologize for the
+inconvenience this causes.
+</p>
+
+<ol>
+ <li> Changed: GridGenerator::hyper_rectangle and
+ GridGenerator::subdivided_hyper_rectangle now take points with @p dim
+ components to correctly handle meshes embedded in higher dimensional spaces.
+ <br>
+ (Timo Heister, 2016/02/04)
+ </li>
+
+ <li> Changed: The constructor of FiniteElementData had a last argument
+ <code>n_blocks</code> that was not actually used by the class to
+ initialize anything. It has been removed. In addition, the default
+ constructor of FiniteElementData has also been removed given that it
+ only creates a dysfunctional element.
+ <br>
+ (Wolfgang Bangerth, 2016/01/23).
+ </li>
+
+ <li> Rework: SLEPcWrappers were reworked to allow usage of PETSc solvers
+ and preconditioners inside SLEPc's eigensolvers. To that end extra methods
+ were introduced to PETSc wrappers. Moreover, initialization of the
+ underlying SLEPc objects is now done inside constructors of the wrapper
+ classes. As a result, one has to provide an MPI communicator to the constructors of
+ spectral transformation classes.
+ <br>
+ (Denis Davydov, 2015/12/29).
+ </li>
+
+ <li> Removed: The deprecated Operator class in the Algorithms namespace has been
+ removed.
+ <br>
+ (Timo Heister, 2015/12/21)
+ </li>
+
+ <li> Changed: deallog console depth is now 0 by default, causing no
+ output to the screen from solvers and other places in the library.
+ <br>
+ (Timo Heister, 2015/12/06)
+ </li>
+
+ <li> Changed: The function Utilities::trim() now removes general
+ white space characters, such as '<tt>\\r</tt>' and '<tt>\\n</tt>', as well as
+ space characters.
+ <br>
+ (David Wells, 2015/12/05)
+ </li>
+
+ <li> Removed: The previously deprecated global instance
+ <code>multithread_info</code> of
+ MultithreadInfo has been removed (all members of this class are static
+ so there is no reason to use/create an instance). The deprecated
+ MultithreadInfo::n_cpus member also got removed in favor of
+ MultithreadInfo::n_cores().
+ <br>
+ (Timo Heister, 2015/11/19)
+ </li>
+
+ <li> Removed: The <code>UpdateFlags</code> flags
+ <code>update_support_points</code>, <code>update_support_jacobians</code>,
+ and <code>update_support_inverse_jacobians</code> have been removed.
+ <code>update_support_points</code> was deprecated in 2013 and has not done
+ anything in a long time. The
+ other two appeared in 2007 and were never implemented.
+ <br>
+ (David Wells, 2015/09/16)
+ </li>
+
+ <li> Cleanup: The two argument variant of cross_product() that returned
+ the result by reference as first argument has been removed. Use the
+ function cross_product_2d(), or cross_product_3d(), that directly returns
+ the result instead. Further, the exception
+ Tensor<rank,dim,Number>::ExcInvalidTensorContractionIndex has been
+ removed
+ <br>
+ (Matthias Maier, 2015/09/14 - 2015/09/17)
+ </li>
+
+ <li> Cleanup: The following functions in tensor.h have been deprecated:
+ <br>
+ - double_contract(). Use the generic contraction function
+ contract() instead.
+ - The four and five argument variants of contract() that return the
+ result by reference as first argument and take the contraction indices as
+ arguments. use the generic contraction function contract() instead.
+ - The three argument variants of contract() that return the result by
+ reference as first argument. Use <code>operator*</code> instead.
+ - The three argument variant of cross_product() that returns the result
+ by reference as first argument. Use the cross_product() function that
+ directly returns the result instead.
+ - The three argument variants of <code>outer_product</code> that return
+ the result by reference as first argument. Use the function that
+ directly returns the result instead.
+ - determinant(dealii::Tensor<rank,1,Number>)
+ <br>
+ (Matthias Maier, 2015/09/14 - 2015/09/17)
+ </li>
+
+ <li> Removed: The Tensor and Point classes no
+ longer have a constructor taking a boolean argument. Those were replaced
+ by a default constructor that will always initialize underlying values with
+ zero.
+ <br>
+ (Matthias Maier, 2015/09/07)
+ </li>
+
+ <li> Removed: The testsuite no longer supports compiler constraints of
+ the form "<code>.compiler=[NAME]...</code>".
+ <br>
+ (Matthias Maier, 2015/08/21)
+ </li>
+
+ <li> Changed: The parameter @p first_vector_components has been removed
+ from GridTools::collect_periodic_faces(). Instead,
+ DoFTools::make_periodicity_constraints() now accepts a parameter
+ @p first_vector_components in all (supported) variants.
+ <br>
+ (Matthias Maier, 2015/08/21)
+ </li>
+
+ <li> Changed: FEValues::normal_vector() for historical reasons returned a
+ value of type Point, though a normal vector is more adequately described
+ as a Tensor@<1,dim@>. Many similar cases were already clarified in deal.II
+ 8.3. The current case has now also been changed: FEValues::normal_vector()
+ now returns a Tensor, rather than a Point.
+ <br>
+ In a similar spirit, the FEValues::get_normal_vectors() function that
+ still returns a vector of Points has been deprecated, and a new function,
+ FEValues::get_all_normal_vectors() that returns a vector of tensors,
+ has been added. This was necessary since there is no way to change the
+ return type of the existing function in a backward compatible way. The
+ old function will be removed in the next version, and the new function
+ will then be renamed to the old name.
+ <br>
+ (Wolfgang Bangerth, 2015/08/20)
+ </li>
+
+ <li> Changed: The mesh_converter program has been removed from the
+ contrib folder. The equivalent functionality can now be found in
+ the GridIn class.
+ <br>
+ (Jean-Paul Pelteret, 2015/08/12)
+ </li>
+
+ <li> Changed: The signature of the FiniteElement::fill_fe_values(),
+ FiniteElement::fill_fe_face_values(), and FiniteElement::fill_fe_subface_values()
+ functions has been changed, in an effort to clarify which of these contain
+ input information and which contain output information for these functions.
+ The same has been done for the corresponding functions in the Mapping
+ class hierarchy.
+ <br>
+ Likewise the signature of FiniteElement::get_data() has been changed.
+ <br>
+ As part of a general overhaul, the FEValuesData class
+ has also been removed.
+ <br>
+ (Wolfgang Bangerth, 2015/07/20-2015/08/13)
+ </li>
+
+ <li> Changed: The functions update_once() and update_each() in the
+ Mapping classes computed information that was, in essence, only of use
+ internally. No external code actually needed to know which
+ pieces of information a mapping could compute once and which they needed
+ to compute on every cell. Consequently, these two functions have been
+ removed and have been replaced by Mapping::requires_update_flags().
+ <br>
+ A similar change has been applied to the FiniteElement class.
+ <br>
+ (Wolfgang Bangerth, 2015/07/20-2015/12/01)
+ </li>
+
+ <li> Changed: The function DoFRenumbering::random() now produces different
+ numberings than it did before, but in return has now acquired the property
+ that its results are predictable and repeatable.
+ <br>
+ (Wolfgang Bangerth, 2015/07/21)
+ </li>
+</ol>
+
+
+<!-- ----------- GENERAL IMPROVEMENTS ----------------- -->
+
+<a name="general"></a>
+<h3>General</h3>
+<ol>
+ <li> New: A variant for GridGenerator::subdivided_parallelepiped() was added
+ that supports meshes embedded in higher dimesional spaces.
+ <br>
+ (Timo Heister, 2016/02/04)
+ </li>
+
+ <li> Fixed: Partitioning using METIS now works correctly with more
+ domains than cells.
+ <br>
+ (Timo Heister, 2016/01/26)
+ </li>
+
+ <li> New: The documentation of step-17 has been completely rewritten,
+ and many aspects of how one has to think when writing parallel programs
+ have been much better documented now.
+ <br>
+ (Wolfgang Bangerth, 2016/01/07)
+ </li>
+
+ <li> New: deal.II now provides a string <code>DEAL_II_ALWAYS_INLINE</code>
+ that, when supported by the compiler, can be used to annotate functions
+ to ensure that the compiler always inlines them.
+ <br>
+ (Matthias Maier, Wolfgang Bangerth, 2016/01/07)
+ </li>
+
+ <li> New: There is a new documentation module, @ref Concepts, which describes the meaning
+ behind template parameter type names.
+ <br>
+ (David Wells, 2015/12/09)
+ </li>
+
+ <li> Changed: The template type name arguments of some classes no longer
+ shadow class names. Additionally, template type names are now much more
+ consistent across deal.II.
+ <br>
+ (David Wells, 2015/10/18 - 2016/01/23)
+ </li>
+
+ <li> New: The WorkStream class's design and implementation are now much
+ better documented in the form of a @ref workstream_paper "preprint".
+ <br>
+ (Wolfgang Bangerth, 2015/11/29)
+ </li>
+
+ <li> New: There is now much more documentation for the FiniteElement class,
+ in particular detailing what one needs to implement when writing finite
+ element descriptions in derived classes.
+ <br>
+ (Wolfgang Bangerth, 2015/11/29)
+ </li>
+
+ <li> New: There is now a function template numbers::signaling_nan() that
+ is used to create invalid floating point objects. These objects can either
+ be scalars, or of type Tensor, SymmetricTensor, or DerivativeForm. The
+ content of these objects is a "signaling NaN" ("NaN" stands for "not a
+ number", and "signaling" implies that at least on platforms where this
+ is supported, any arithmetic operation using them terminates the program).
+ The purpose of this is to use them as markers for uninitialized objects
+ and arrays that are required to be filled in other places, and to trigger
+ an error when this later initialization does not happen before the first
+ use.
+ <br>
+ (Wolfgang Bangerth, Timo Heister, 2015/11/24)
+ </li>
+
+ <li> Changed: The function FE_DGPNonparametric::shape_value() and similar
+ functions in the same class returned values and derivatives of shape
+ functions on the reference cell. However, this element is not defined
+ through mapping of shape functions from the reference cell, and consequently
+ it makes no sense to ask for this information. These functions have therefore
+ been changed to throw an exception instead, as documented in
+ FiniteElement::shape_value().
+ <br>
+ (Wolfgang Bangerth, 2015/11/20)
+ </li>
+
+ <li> Changed: The functionality to distribute cells across processes
+ according to a vector of cell weights that was passed in a call to
+ parallel::distributed::Triangulation::repartition()
+ was replaced by a cell-wise signal. This signal is called during
+ parallel::distributed::Triangulation::execute_coarsening_and_refinement() and
+ parallel::distributed::Triangulation::repartition()
+ if any function is connected to it. It allows to connect a function that
+ takes the current cell iterator and a status argument that indicates whether
+ this cell will be refined, coarsened or remains unchanged and returns a
+ cell weight, which will be used to distribute cells across processes in a
+ way that keeps the sum of weights across each individual process
+ approximately equal.
+ <br>
+ (Rene Gassmoeller, 2015/11/02)
+ </li>
+
+ <li> New: Preliminary support for parallel, adaptive, geometric multigrid is
+ now in place with changes to MGConstrainedDoFs (many new functions), MGTransfer,
+ MGTools::extract_inner_interface_dofs, MGTransferPrebuilt,
+ DoFTools::extract_locally_relevant_level_dofs.
+ <br>
+ (Timo Heister, Guido Kanschat, 2015/10/26)
+ </li>
+
+ <li> New: Two cell level signals are added to class Triangulation, namely
+ pre_coarsening_on_cell and post_refinement_on_cell.
+ <br>
+ (Lei Qiao, 2015/10/22)
+ </li>
+
+ <li> New: parallel::distributed::Triangulation::ghost_owners()
+ returns the set of MPI ranks of the ghost cells. Similarly
+ parallel::distributed::Triangulation::level_ghost_owners() for level
+ ghosts.
+ <br>
+ (Timo Heister, 2015/09/30)
+ </li>
+
+ <li> Improved: The interfaces to all deal.II type solvers and
+ preconditioners have been updated such that they function as expected
+ with the LinearOperator class and its associated functions (i.e.,
+ linear_operator(), transpose_operator() and inverse_operator()).
+ These preconditioners can now be wrapped as a LinearOperator,
+ facilitating the construction of approximate matrix inverses such as in
+ the development of a block matrix preconditioner. An example of this
+ functionality can be found in
+ <code>tests/lac/linear_operator_08.cc</code>.
+ <br>
+ (Jean-Paul Pelteret, 2015/09/24 - 2015/10/19)
+ </li>
+
+ <li> New: MGTransferPrebuilt can now be used with parallel::distributed::Vector
+ and TrilinosWrappers::SparseMatrix as a transfer matrix.
+ <br>
+ (Martin Kronbichler, 2015/09/22)
+ </li>
+
+ <li> Fixed: parallel::distributed::Vector is now fully functional for
+ indices larger than 4 billion.
+ <br>
+ (Martin Kronbichler, 2015/09/22)
+ </li>
+
+ <li> New: PArpackSolver eigensolver interface class.
+ <br>
+ (Denis Davydov, 2015/09/17)
+ </li>
+
+ <li> Changed: All doxygen-generated pages now contain a link to the
+ tutorial in their top-level menus.
+ <br>
+ (Wolfgang Bangerth, 2015/09/13)
+ </li>
+
+ <li>New: A new namespace TensorAccessors is introduced that contains
+ generic algorithms for tensorial objects, i.e., objects that allow
+ repeated access via the index operator <code>operator[](unsigned int)</code>.
+ The methods in TensorAccessors is primarily meant to replace old internal
+ code in <code>tensor.h</code>, but it might also proof useful otherwise.
+ <br>
+ (Matthias Maier, 2015/09/11)
+ </li>
+
+ <li> New: A python script (including instructions) for enabling pretty
+ printing with GDB is now available in
+ <tt>/contrib/utilities/dotgdbinit.py</tt>.
+ <br>
+ (Wolfgang Bangerth, David Wells, 2015/09/11)
+ </li>
+
+ <li> Improved: When available, deal.II now uses the "gold" linker, a
+ reimplementation of the traditional Unix "ld" linker that is substantially
+ faster. This reduces build and, in particular, test turnaround times.
+ <br>
+ (Wolfgang Bangerth, Matthias Maier, 2015/09/06)
+ </li>
+
+ <li> Cleanup: The interface of Tensor<rank,dim,Number> has been cleaned
+ up (a lot of unnecessary partial template specializations have been
+ removed). The specialization Tensor<1,dim,Number> has been removed.
+ <br>
+ (Matthias Maier, 2015/09/02)
+ </li>
+
+ <li> Improved: The testsuite now supports multiple comparison files.
+ Apart from the main comparison file that ends in
+ <code>[...].output</code> all files of the form
+ <code>[...].output.[string]</code> are considered for comparison.
+ <br>
+ (Matthias Maier, 2015/08/29)
+ </li>
+
+ <li> New: A class BlockLinearOperator has been introduced that extends
+ the LinearOperator concept to block structures. A BlockLinearOperator can
+ be sliced back to a LinearOperator.
+ <br>
+ (Matthias Maier, 2015/08/27)
+ </li>
+
+ <li> Improved: Support for complex number types throughout the library.
+ Several parts of the library have been reorganized to support complex
+ number types.
+ <br>
+ <em>Classes that are now instantiated for complex number types:</em>
+ - FunctionTime
+ - Function
+ - TensorFunction
+ <br>
+ <em>Classes with fixed interface that now fully support complex number
+ types (pure template classes without explicit instantiations in the
+ library):</em>
+ - LinearOperator
+ - PackagedOperation
+ - Tensor
+ <br>
+ (Matthias Maier, 2015/08/25)
+ </li>
+
+ <li> Fixed: The testsuite now properly supports version constraints for
+ features. Those are annotated by
+ <code>.with_FEATURE(<=|>=|=|<|>)VERSION.</code>.
+ <br>
+ (Matthias Maier, 2015/08/25)
+ </li>
+
+ <li> Improved: The interface and documentation for periodic boundary
+ conditions have been restructured. A
+ @ref GlossPeriodicConstraints "glossary entry" has been written.
+ <br>
+ (Daniel Arndt, Matthias Maier, 2015/08/01-2015/08/21)
+ </li>
+
+ <li> New: There is a new documentation module on
+ @ref FE_vs_Mapping_vs_FEValues "How Mapping, FiniteElement, and FEValues work together".
+ <br>
+ (Wolfgang Bangerth, 2015/08/20)
+ </li>
+
+ <li> New: parallel::shared::Triangulation class which extends
+ Triangulation class to automatically partition triangulation when run
+ with MPI. Common functionality between parallel::shared::Triangulation and
+ parallel::distributed::Triangulation is implemented in the parent class
+ parallel::Triangulation.
+ <br>
+ (Denis Davydov, 2015/08/14)
+ </li>
+
+ <li> New: The online documentation of all functions now includes
+ links to the file and line where that function is implemented. Both
+ are clickable to provide immediate access to the source code of a
+ function.
+ <br>
+ (Jason Sheldon, Wolfgang Bangerth, 2015/08/13)
+ </li>
+
+ <li> New: FE_RannacherTurek describes a discontinuous FiniteElement
+ with vanishing mean values of jumps across faces.
+ <br>
+ (Patrick Esser, 2015/08/17)
+ </li>
+
+ <li> New: FE_Q_Bubbles describes a FiniteElement based on FE_Q
+ enriched by bubble functions.
+ <br>
+ (Daniel Arndt, 2015/08/12)
+ </li>
+
+ <li> New: The testsuite now runs in a mode in which we abort programs for
+ floating point exceptions due to divisions by zero or other invalid arithmetic.
+ <br>
+ (Wolfgang Bangerth, 2015/07/29)
+ </li>
+
+ <li> New: MultithreadInfo::set_thread_limit() can now be called more than
+ once and the environment variable DEAL_II_NUM_THREADS will be respected
+ even if user code never calls it.
+ <br>
+ (Timo Heister, 2015/07/26)
+ </li>
+
+ <li> New: IndexSet now implements iterators.
+ <br>
+ (Timo Heister, 2015/07/12)
+ </li>
+
+</ol>
+
+
+<!-- ----------- SPECIFIC IMPROVEMENTS ----------------- -->
+
+<a name="specific"></a>
+<h3>Specific improvements</h3>
+
+
+
+<ol>
+ <li> New: FunctionParser now supports <code>rand()</code> and
+ <code>rand_seed(number)</code>, which return a random value in the
+ range [0,1].
+ <br>
+ (Wolfgang Bangerth, Luca Heltai, Alberto Sartori, 2016/02/09)
+ </li>
+
+ <li> Fixed: FullMatrix::TmTmult for matrix multiplication used to compute
+ wrong results for larger matrix sizes where external BLAS is called. This
+ has been fixed.
+ <br>
+ (Martin Kronbichler, 2016/02/02)
+ </li>
+
+ <li> Fixed: parallel::distributed::Triangulation with periodic boundary
+ conditions did not respect 2:1 balance over vertices on periodic
+ boundaries. This lead to incomplete ghost layers on multigrid levels. This
+ has been fixed.
+ <br>
+ (Martin Kronbichler, Timo Heister, 2016/01/27)
+ </li>
+
+ <li> Fixed: SparseVanka now really uses second-order couplings for the
+ right-hand side of the local problems.
+ <br>
+ (Florian Sonner, 2016/01/27)
+ </li>
+
+ <li> Fixed: A bug in the Neumann boundary handling of KellyErrorEstimator
+ in 1d has been fixed and KellyErrorEstimator now correctly handles
+ codimension one problems by using the correct normals from the manifold
+ inside the gradient jump computation.
+ <br>
+ (Andrea Bonito, Timo Heister, 2016/01/21)
+ </li>
+
+ <li> New: The new class MGTransferMatrixFree implements multigrid level
+ transfer using local polynomial embedding and restriction with tensor
+ product evaluation techniques. This is a faster and less memory-demanding
+ alternative to MGTransferPrebuilt.
+ <br>
+ (Martin Kronbichler, 2016/01/20)
+ </li>
+
+ <li> New: hp::FECollection now has constructors which take
+ multiple finite elements as arguments.
+ <br>
+ (Angel Rodriguez, 2016/01/18)
+ </li>
+
+ <li> New: The glossary now contains a long entry describing what
+ the term "scalability" means in the context of finite element codes.
+ See @ref GlossParallelScaling.
+ <br>
+ (Wolfgang Bangerth, 2016/01/11)
+ </li>
+
+ <li> Fixed: Tensor::operator[] that takes TableIndices as a parameter no
+ longer returns by value, but rather by reference. Tensor::operator<< for
+ dim==0 now accesses values by reference instead of making a copy. This is
+ useful when non-trivial number types are stored.
+ <br>
+ (Jean-Paul Pelteret, 2016/01/08)
+ </li>
+
+ <li> New: constrained_linear_operator() and constrained_right_hand_side()
+ provide a generic mechanism of applying constraints to a LinearOperator.
+ A detailed explanation with example code is given in the @ref constraints
+ module.
+ <br>
+ (Mauro Bardelloni, Matthias Maier, 2015/10/25 - 2015/12/27)
+ </li>
+
+ <li> New: OpenCASCADE::read_IGES() and OpenCASCADE::read_STEP() have
+ been unified in behaviour, and now they allow to extract *all* elements of
+ the IGES and STEP files instead of only the faces. This allows the
+ use of iges files describing edges only to be used as input for some of
+ the OpenCASCADE Manifold wrappers.
+ <br>
+ (Luca Heltai, 2015/12/13)
+ </li>
+
+ <li> New: A new linear operator representing the Schur complement,
+ namely schur_complement(), has been implemented. Some auxiliary functions
+ that are often used in conjunction with the Schur complement
+ (condense_schur_rhs() and postprocess_schur_solution()) are also provided
+ as a PackagedOperation.
+ An example of this functionality can be found in
+ <code>tests/lac/schur_complement_01.cc</code>.
+ The solution of a multi-component problem (namely step-22) using the
+ schur_complement can be found in
+ <code>tests/lac/schur_complement_03.cc</code> .
+ <br>
+ (Jean-Paul Pelteret, Matthias Maier, Martin Kronbichler, 2015/12/07)
+ </li>
+
+ <li> New: There is now a function Utilities::to_string that works like
+ int_to_string, but is more safe for long integers, negative integers, and
+ also handles floating point numbers. The implementation of int_to_string
+ was changed to simply call to_string. int_to_string is kept for
+ compatibility, but should only be used for unsigned integers.
+ <br>
+ (Rene Gassmoeller, 2015/12/09)
+ </li>
+
+ <li> Fixed: GridOut::write_msh() and GridOut::write_ucd() used the same
+ geometric element numbers for lines and faces. This caused visualization
+ programs to ignore parts with repeated geometric element numbers. This is now
+ fixed.
+ <br>
+ (David Wells, 2016/01/16)
+ </li>
+
+ <li> New: DoFTools::extract_dofs() are now instantiated also for
+ codimension different from zero.
+ <br>
+ (Alberto Sartori, 2016/01/13)
+ </li>
+
+ <li> Fixed: The DataOutFaces class should now also work with triangulations
+ of type parallel::distributed::Triangulation.
+ <br>
+ (Heikki Virtanen, Wolfgang Bangerth, 2016/01/11)
+ </li>
+
+ <li> Fixed: AlignedVector<T>::fill() (and thus, Table<N,T>::reinit) did not
+ correctly call the destructor of T() and could leak memory for complicated
+ class types that depend on their constructor to free memory.
+ <br>
+ (Martin Kronbichler, 2016/01/08)
+ </li>
+
+ <li> Fixed: inverse_operator() now populates <code>Tvmult</code> and
+ <code>Tvmult_add</code> correctly.
+ <br>
+ (Jean-Paul Pelteret, David Wells, Matthias Maier, 2015/12/30)
+ </li>
+
+ <li> New: MGTransferPrebuilt with parallel adaptive refinement has been
+ finalized for parallel::distributed::Vector.
+ <br>
+ (Martin Kronbichler, 2015/12/23)
+ </li>
+
+ <li> Fixed: Now all members in the class SparseMatrixEZ are initialized
+ correctly in the constructor. This was causing random crashes before.
+ <br>
+ (Timo Heister, 2015/12/21)
+ </li>
+
+ <li> New: There is now a new class ArrayView that presents a chunk of
+ memory as if it was an array of fixed size. This is eventually going
+ to replace the VectorSlice class which suffers from the defect that
+ its template argument does not encode the type of objects it points
+ to, but instead the type of the underlying container; consequently,
+ where the VectorSlice class is used as a function argument, it
+ automatically ties the type of object the function can be called
+ with (i.e., the underlying container) even if the called function
+ has no actual use for this kind of information.
+ <br>
+ (Wolfgang Bangerth, 2015/12/20)
+ </li>
+
+ <li> Fixed: Handling of constraints in step-26 was incorrect (hanging nodes
+ were condensed twice) leading to garbage solutions. This is now fixed.
+ <br>
+ (Timo Heister, 2015/12/20)
+ </li>
+
+ <li> Fixed: The implementation of ShiftedMatrixGeneralized contained several
+ errors that prevented it from being compiled. These have now been fixed.
+ <br>
+ (David Wells, 2015/12/18)
+ </li>
+
+ <li> New: There is now a function Triangulation::get_triangulation() that
+ allows writing code to get at the underlying triangulation for
+ everything that looks like a container, i.e., both Triangulation
+ or DoFHandler objects.
+ <br>
+ (Wolfgang Bangerth, 2015/12/10)
+ </li>
+
+ <li> Deprecated: The functions DoFHandler::get_tria() and
+ hp::DoFHandler::get_tria() were deprecated. UseDoFHandler::get_triangulation() and
+ hp::DoFHandler::get_triangulation() instead.
+ <br>
+ (Wolfgang Bangerth, 2015/12/10)
+ </li>
+
+ <li> New: parallel::distributed::Vector has now a method to return a shared
+ pointer to the underlying partitioner object.
+ <br>
+ (Martin Kronbichler, 2015/12/07)
+ </li>
+
+ <li> Improved: Many more functions in namespace GridTools and class
+ InterGridMap are now consistely instantiated also for types
+ parallel::distributed::Triangulation and parallel::shared::Triangulation.
+ <br>
+ (Gennadiy Rishin, Wolfgang Bangerth, 2015/12/07)
+ </li>
+
+ <li> Improved: Both versions of SparsityTools::distribute_sparsity_pattern()
+ are now plain, not
+ template, functions. This is not a breaking change because each function was
+ instantiated for exactly one template argument.
+ <br>
+ (David Wells, 2015/12/06)
+ </li>
+
+ <li> Improved: The method
+ parallel::distributed::Triangulation::fill_vertices_with_ghost_neighbors()
+ that is used for distributing DoFs on parallel triangulations previously
+ exhibited quadratic complexity in the number of coarse grid cells. This has
+ been changed into linear complexity calls (apart from a few issues
+ inside p4est).
+ <br>
+ (Martin Kronbichler, 2015/12/05)
+ </li>
+
+ <li> New: There are now new functions
+ GridTools::build_triangulation_from_patch() and
+ GridTools::get_cells_at_coarsest_common_level() that help build patches
+ around individual cells.
+ <br>
+ (Arezou Ghesmati, 2015/12/02)
+ </li>
+
+ <li> Fixed: The GridTools::copy_boundary_to_manifold_id() function
+ only copied boundary indicators from faces, but in 3d forgot about
+ edges. This is now fixed.
+ <br>
+ (Wolfgang Bangerth, 2015/11/30)
+ </li>
+
+ <li> Fixed: The constructor of SymmetricTensor that takes an array
+ of initializing elements led to a compiler error. This is now
+ fixed.
+ <br>
+ (Wolfgang Bangerth, 2015/11/28)
+ </li>
+
+ <li> Fixed: parallel::distributed::Vector now detects if the size of MPI
+ messages exceeds 2GB or if the local range exceeds the size of 32-bit
+ integers and throws an exception informing about the unsupported sizes.
+ <br>
+ (Martin Kronbichler, 2015/11/26)
+ </li>
+
+ <li> New: In 3d, GridGenerator::extract_boundary_mesh() now copies the
+ manifold ids of edges of the volume mesh to the manifold ids of the edges
+ of the extracted surface mesh.
+ <br>
+ (Wolfgang Bangerth, 2015/11/25)
+ </li>
+
+ <li> New: Triangulation::create_triangulation() now accepts subcell-data
+ objects that may include information about interior edges and faces, to
+ facilitate setting manifold indicators on interior edges and faces.
+ <br>
+ (Wolfgang Bangerth, 2015/11/25)
+ </li>
+
+ <li> Fixed: GridGenerator::extract_boundary_mesh() in 3d could generate
+ surface cells that did not uniformly had a right- or left-handed coordinate
+ system associated with them when viewed from one side of the surface. This
+ has been fixed: they now all have a right-handed coordinate system when seen
+ from one side of the surface, and a left-handed one when viewed from the
+ other side.
+ <br>
+ (Daniel Weygand, Wolfgang Bangerth, 2015/11/22)
+ </li>
+
+ <li> Fixed: Trilinos ML preconditioner is now deterministic when using
+ version 12.4 or newer.
+ <br>
+ (Timo Heister, 2015/11/16)
+ </li>
+
+ <li> New: Extra parameters to GD and Lanczos SLEPc solvers. Also added unit tests.
+ <br>
+ (Denis Davydov, 2015/11/09)
+ </li>
+
+ <li> Fixed: FETools::project_dg was adding the vector projection to
+ the output vector. Now is the output vector initialized to zero.
+ <br>
+ (Adam Kosik, 2015/11/09)
+ </li>
+
+ <li> Fixed: A compilation issue with DEAL_II_INCLUDE_DIRS not used for
+ compiling bundled boost.
+ <br>
+ (Lukas Korous, 2015/11/01)
+ </li>
+
+ <li> New: 2nd derivatives are implemented for PolynomialsBDM in 3D.
+ <br>
+ (Alistair Bentley, 2015/10/27)
+ </li>
+
+ <li> Fixed: PolynomialsBDM::degree() now returns the correct value.
+ <br>
+ (Alistair Bentley, 2015/10/24)
+ </li>
+
+ <li> New: Triangulation::set_all_manifold_ids_on_boundary(boundary_id, manifold_id)
+ which sets the manifold_id for all parts of the boundary with a given boundary_id.
+ <br>
+ (Alberto Sartori, 2015/10/22)
+ </li>
+
+ <li> Fixed: The range vectors in the construction of an
+ inverse_operator() is now reinitialised before solve calls. This ensures
+ a consistent starting point for the solver.
+ <br>
+ (Jean-Paul Pelteret, 2015/10/19)
+ </li>
+
+ <li> New: Ghost cells for the multigrid levels in
+ parallel::distributed::Triangulation are now correctly created also for
+ periodic boundary conditions.
+ <br>
+ (Martin Kronbichler, 2015/10/18)
+ </li>
+
+ <li> Fixed: GridGenerator::subdivided_parallelepiped() produced
+ invalid, unconnected meshes and wrong boundary indicators.
+ <br>
+ (Timo Heister, 2015/10/13)
+ </li>
+
+ <li> Improved: DoFTools::compute_intergrid_transfer_representation
+ can now be used with a fine grid given by a parallel::Triangulation.
+ <br>
+ (Alexander Grayver, 2015/10/09)
+ </li>
+
+ <li> New: GridIn::read_unv() can now read more element codes that
+ are used in typical meshes.
+ <br>
+ (Aslan Kosakian, 2015/10/06)
+ </li>
+
+ <li> New: FunctionParser now supports <code>pow(a,b)</code>.
+ <br>
+ (Timo Heister, 2015/09/30)
+ </li>
+
+ <li> New: DoFTools::locally_relevant_dofs_per_subdomain() can be used
+ to extract an IndexSet of locally relevant DoFs for a Triangulation
+ partitioned using METIS or with a parallel::shared::Triangulation .
+ <br>
+ (Jean-Paul Pelteret, 2015/09/24)
+ </li>
+
+ <li> Fixed: hp::SolutionTransfer could get confused when dealing with
+ FE_Nothing elements. This is now fixed.
+ <br>
+ (Claire Bruna-Rosso, Wolfgang Bangerth, 2015/09/23)
+ </li>
+
+ <li> Improved: The construction of the non-local graph for quick data
+ exchange of TrilinosWrappers::SparseMatrix became very slow for a few
+ thousand processors. This has been fixed.
+ <br>
+ (Martin Kronbichler, 2015/09/22)
+ </li>
+
+ <li> Improved: Initializing a TrilinosWrappers::SparseMatrix from a
+ DynamicSparsityPattern included some O(global_size) operations. These have
+ been replaced by operations only on the local range.
+ <br>
+ (Martin Kronbichler, 2015/09/22)
+ </li>
+
+ <li> Changed: All doxygen-generated pages now contain a link to the
+ tutorial in their top-level menus.
+ <br>
+ (Wolfgang Bangerth, 2015/09/13)
+ </li>
+
+ <li>Cleanup: Constructors of AdditionalData in various linear solvers are now marked
+ explicit. This avoid bugs with implicit conversions like the one fixed in step-40.
+ <br>
+ (Timo Heister, Lei Qiao, 2015/09/09)
+ </li>
+
+ <li>New: Introduced third-order derivatives of the shape functions, which
+ can now be accessed through FEValues and FEValuesViews using similar interfaces
+ as shape_values, shape_derivatives and shape_hessians.
+ (Maien Hamed, 2015/09/08)
+ </li>
+
+ <li>Cleanup: TableIndices<N> can now be used (constructed and accessed)
+ with N > 7.
+ <br>
+ (Matthias Maier, 2015/09/08)
+ </li>
+
+ <li>New: std::begin and std::end are now available within the std_cxx11
+ namespace through <base/std_cxx11/iterator.h>
+ <br>
+ (Matthias Maier, 2015/09/08)
+ </li>
+
+ <li>New: MappingQ1Eulerian was not instantiated for the various
+ Trilinos vector types. It is now instantiated for the same
+ vector types as MappingQEulerian is.
+ <br>
+ (Wolfgang Bangerth, 2015/09/08)
+ </li>
+
+ <li>New: Introduced Hessian-related functions to the Function class.
+ <br>
+ (Denis Davydov, 2015/09/08)
+ </li>
+
+ <li>New: Memory consumption during compilation has been reduced by splitting
+ instantiation files. For this make_instantiations now supports additional
+ logic to split the the instantiations in .inst files into groups. This is
+ used in fe_values.cc, error_estimator.cc, and others.
+ <br>
+ (Timo Heister, 2015/09/05)
+ </li>
+
+ <li> Improved: Allow continuation lines in ParameterHandler. Any line in a
+ parameter file ending with a <tt>\\</tt> will now be combined with the next
+ line; see ParameterHandler's documentation for more information.
+ <br>
+ (Alberto Sartori, 2015/09/04, David Wells, 2016/01/18-2016/01/28)
+ </li>
+
+ <li> New: There is now a function SparsityPattern::print_svg() which prints
+ the sparsity of the matrix in a .svg file which can be opened in a web
+ browser.
+ <br>
+ (Conrad Clevenger, 2015/09/03)
+ </li>
+
+ <li> Openmp SIMD support is now enabled for Clang version 3.6, or newer
+ (or the equivalent XCode version). Further, openmp support is not any
+ more falsely activated for very old clang versions.
+ <br>
+ (Matthias Maier, 2015/09/03)
+ </li>
+
+ <li> Improved: DoFTools::make_hanging_node_constraints() now supports
+ hp-refinement cases when neither_element_dominates. To that end we look for
+ a least face dominating FE inside FECollection.
+ <br>
+ (Denis Davydov, 2015/09/02)
+ </li>
+
+ <li> Changed: FEValues::transform() has been deprecated. The functionality
+ of this function is a (small) subset of what the Mapping classes
+ already provide.
+ <br>
+ (Wolfgang Bangerth, 2015/09/02)
+ </li>
+
+ <li> New: introduced hp::FECollection::find_least_face_dominating_fe(const
+ std::set<unsigned int> &fes) which aims to find the least dominating finite
+ element w.r.t. those provided as fe_indices in @p fes.
+ <br>
+ (Denis Davydov, Wolfgang Bangerth, 2015/08/31)
+ </li>
+
+ <li> New: step-6 now has an additional subsection in the
+ "Possibilities for extensions" section that discusses how
+ to create a better mesh.
+ <br>
+ (Konstantin Ladutenko, Wolfgang Bangerth, 2015/08/31)
+ </li>
+
+ <li> New: Introduce an option for FE_Nothing to dominate any other FE.
+ Therefore at interfaces where, for example, a Q1 meets an FE_Nothing,
+ we will force the traces of the two functions to be the same. Because the
+ FE_Nothing encodes a space that is zero everywhere, this means that the Q1
+ field will be forced to become zero at this interface.
+ <br>
+ (Denis Davydov, 2015/08/31)
+ </li>
+
+ <li> Fixed: VectorTools::integrate_difference() for VectorTools::Hdiv_seminorm
+ was computed incorrectly.
+ <br>
+ (Timo Heister, 2015/08/31)
+ </li>
+
+ <li> New: Jacobian second and third derivatives are now computed by the mapping classes and can be
+ accessed through FEValues in much the same way as the Jacobian and Jacobian gradient.
+ <br>
+ (Maien Hamed, 2015/08/28-2015/08/31)
+ </li>
+
+ <li> Fixed: The GridIn class was not instantiated for the
+ <code>dim==1,spacedim==3</code> case. This is now fixed.
+ <br>
+ (Wolfgang Bangerth, 2015/08/25)
+ </li>
+
+ <li> Fixed: In 1d, GridIn::read_msh() ignored boundary indicators
+ associated with vertices. This is now fixed.
+ <br>
+ (Jan Stebel, Wolfgang Bangerth, 2015/08/25)
+ </li>
+
+ <li> New: There are now a collection of functions named GridTools::compute_active_cell_halo_layer()
+ that determine which cells form a layer around a specified subdomain. There is also a function
+ GridTools::compute_ghost_cell_halo_layer() that returns the smallest layer of ghost cells around
+ all locally relevant cells.
+ <br>
+ (Jean-Paul Pelteret, Denis Davydov, Wolfgang Bangerth, 2015/08/21)
+ </li>
+
+ <li> Documentation: How to set up a testsuite in a user project is now
+ properly documented.
+ <br>
+ (Matthias Maier, 2015/08/01 - 2015/08/20)
+ </li>
+
+ <li> Fixed: The computation of gradients in FE_PolyTensor and its derived classes (in particular in
+ FE_RaviartThomas and FE_Nedelec) forgot to account for terms that appear on non-affine
+ cells. Consequently, the computed gradients did not match the actual derivatives of the values
+ these elements report. This is now fixed.
+ <br>
+ (Maien Hamed, 2015/08/18-2015/08/20)
+ </li>
+
+ <li> Improved: Generalized conversion between Tensor<order+1,dim> and
+ DerivativeForm<order,dim,dim> to general order using converting constructor
+ and assignment operator.
+ <br>
+ (Maien Hamed, 2015/08/01-2015/08/09)
+ </li>
+
+ <li> Changed: The function Vector::ratio() and the corresponding
+ functions in other vector classes have been deprecated.
+ <br>
+ (Wolfgang Bangerth, Bruno Turcksin, 2015/08/13)
+ </li>
+
+ <li> New: Direct support for Abaqus mesh files has been added to the GridIn
+ class through the function GridIn::read_abaqus().
+ <br>
+ (Jean-Paul Pelteret, Timo Heister, Krzysztof Bzowski, 2015/08/12)
+ </li>
+
+ <li> Improved: Finite elements now compute hessians analytically rather than
+ by finite differencing.
+ <br>
+ (Maien Hamed, 2015/08/01-2015/08/09)
+ </li>
+
+ <li> New: The InterpolatedTensorProductGridData::gradient() function
+ is now implemented.
+ <br>
+ (Daniel Shapero, 2015/08/12)
+ </li>
+
+ <li> New: There is now a function Mapping::project_real_point_to_unit_point_on_face()
+ that calls Mapping::transform_real_to_unit_cell() and then projects the
+ result to a provided face.
+ <br>
+ (Jason Sheldon, 2015/08/11)
+ </li>
+
+ <li> New: FEFaceValues and FESubfaceValues can now also compute
+ gradients of the Jacobian of the transformation from unit to real cell,
+ controlled by update_jacobian_grads.
+ <br>
+ (Martin Kronbichler, 2015/08/08)
+ </li>
+
+ <li> New: There is now a function MemoryConsumption::memory_consumption()
+ for std_cxx11::unique_ptr arguments.
+ <br>
+ (Wolfgang Bangerth, 2015/08/07)
+ </li>
+
+ <li> Improved: CMake configuration: The DEAL_II_ADD_TEST now also
+ supports unit tests writing to stdout and stderr. Further, a second test
+ type consisting of an internal executable target, a configuration and a
+ comparison file is now supported.
+ <br>
+ (Matthias Maier, 2015/08/03)
+ </li>
+
+ <li> New: VtkFlags now stores a parameter describing the compression level
+ zlib uses when writing compressed output. For small problems, the flag
+ ZlibCompressionLevel::best_speed can make the call to write_vtu many times
+ faster.
+ <br>
+ (David Wells, 2015/08/03)
+ </li>
+
+ <li> Improved: The conversion Epetra_Map -> IndexSet is now an O(1)
+ operation for contiguous index ranges, improving over the old O(N) behavior.
+ <br>
+ (Martin Kronbichler, 2015/07/30)
+ </li>
+
+ <li> Changed: The initialization methods of TrilinosWrappers::SparseMatrix,
+ TrilinosWrappers::BlockSparseMatrix, TrilinosWrappers::SparsityPattern, and
+ TrilinosWrappers::BlockSparsityPattern with Epetra_Map arguments have been
+ marked as deprecated. Use the functions with IndexSet argument instead.
+ <br>
+ (Martin Kronbichler, Luca Heltai, 2015/07/30)
+ </li>
+
+ <li> New: FESystem now does some work in parallel if your system
+ has multiple processors.
+ <br>
+ (Wolfgang Bangerth, 2015/07/19)
+ </li>
+
+ <li> Fixed: When using FESystem with base elements that require
+ information other than the determinant of the Jacobian (e.g.,
+ elements that require the Jacobian itself), then this information
+ was not passed down to FiniteElement::fill_fe_values of the
+ base element. This is now fixed.
+ <br>
+ (Wolfgang Bangerth, Zhen Tao, 2015/07/17)
+ </li>
+
+ <li> New: The parallel::distributed::Triangulation can now be told to
+ partition the cells so that the sum of certain weights associated with each
+ cell, rather than the number of cells, is roughly constant between processors.
+ This is done by passing a vector of weights to the function that repartitions
+ the triangulation, parallel::distributed::Triangulation::repartition().
+ <br>
+ (Wolfgang Bangerth, 2015/07/14)
+ </li>
+
+ <li> New: DataOutBase::TecplotFlags now takes a third argument for solution
+ time which is useful to visualize transient data. If a user sets a non-negative
+ time, it will be saved into the tecplot file.
+ <br>
+ (Praveen Chandrashekar, 2015/08/30)
+ </li>
+
+</ol>
+
+*/
// ---------------------------------------------------------------------
/**
-@page changes_after_8_3 Changes after Version 8.3.0
+@page changes_after_8_4 Changes after Version 8.4.0
<p>
This is the list of changes made after the release of deal.II version
-8.3.0. All entries are signed with the names of the authors.
+8.4.0. All entries are signed with the names of the authors.
</p>
</p>
<ol>
- <li> Changed: GridGenerator::hyper_rectangle and
- GridGenerator::subdivided_hyper_rectangle now take points with @p dim
- components to correctly handle meshes embedded in higher dimensional spaces.
- <br>
- (Timo Heister, 2016/02/04)
- </li>
-
- <li> Changed: The constructor of FiniteElementData had a last argument
- <code>n_blocks</code> that was not actually used by the class to
- initialize anything. It has been removed. In addition, the default
- constructor of FiniteElementData has also been removed given that it
- only creates a dysfunctional element.
- <br>
- (Wolfgang Bangerth, 2016/01/23).
- </li>
-
- <li> Rework: SLEPcWrappers were reworked to allow usage of PETSc solvers
- and preconditioners inside SLEPc's eigensolvers. To that end extra methods
- were introduced to PETSc wrappers. Moreover, initialization of the
- underlying SLEPc objects is now done inside constructors of the wrapper
- classes. As a result, one has to provide an MPI communicator to the constructors of
- spectral transformation classes.
- <br>
- (Denis Davydov, 2015/12/29).
- </li>
-
- <li> Removed: The deprecated Operator class in the Algorithms namespace has been
- removed.
- <br>
- (Timo Heister, 2015/12/21)
- </li>
-
- <li> Changed: deallog console depth is now 0 by default, causing no
- output to the screen from solvers and other places in the library.
- <br>
- (Timo Heister, 2015/12/06)
- </li>
-
- <li> Changed: The function Utilities::trim() now removes general
- white space characters, such as '<tt>\\r</tt>' and '<tt>\\n</tt>', as well as
- space characters.
- <br>
- (David Wells, 2015/12/05)
- </li>
-
- <li> Removed: The previously deprecated global instance
- <code>multithread_info</code> of
- MultithreadInfo has been removed (all members of this class are static
- so there is no reason to use/create an instance). The deprecated
- MultithreadInfo::n_cpus member also got removed in favor of
- MultithreadInfo::n_cores().
- <br>
- (Timo Heister, 2015/11/19)
- </li>
-
- <li> Removed: The <code>UpdateFlags</code> flags
- <code>update_support_points</code>, <code>update_support_jacobians</code>,
- and <code>update_support_inverse_jacobians</code> have been removed.
- <code>update_support_points</code> was deprecated in 2013 and has not done
- anything in a long time. The
- other two appeared in 2007 and were never implemented.
- <br>
- (David Wells, 2015/09/16)
- </li>
-
- <li> Cleanup: The two argument variant of cross_product() that returned
- the result by reference as first argument has been removed. Use the
- function cross_product_2d(), or cross_product_3d(), that directly returns
- the result instead. Further, the exception
- Tensor<rank,dim,Number>::ExcInvalidTensorContractionIndex has been
- removed
- <br>
- (Matthias Maier, 2015/09/14 - 2015/09/17)
- </li>
-
- <li> Cleanup: The following functions in tensor.h have been deprecated:
- <br>
- - double_contract(). Use the generic contraction function
- contract() instead.
- - The four and five argument variants of contract() that return the
- result by reference as first argument and take the contraction indices as
- arguments. use the generic contraction function contract() instead.
- - The three argument variants of contract() that return the result by
- reference as first argument. Use <code>operator*</code> instead.
- - The three argument variant of cross_product() that returns the result
- by reference as first argument. Use the cross_product() function that
- directly returns the result instead.
- - The three argument variants of <code>outer_product</code> that return
- the result by reference as first argument. Use the function that
- directly returns the result instead.
- - determinant(dealii::Tensor<rank,1,Number>)
- <br>
- (Matthias Maier, 2015/09/14 - 2015/09/17)
- </li>
-
- <li> Removed: The Tensor and Point classes no
- longer have a constructor taking a boolean argument. Those were replaced
- by a default constructor that will always initialize underlying values with
- zero.
- <br>
- (Matthias Maier, 2015/09/07)
- </li>
-
- <li> Removed: The testsuite no longer supports compiler constraints of
- the form "<code>.compiler=[NAME]...</code>".
- <br>
- (Matthias Maier, 2015/08/21)
- </li>
-
- <li> Changed: The parameter @p first_vector_components has been removed
- from GridTools::collect_periodic_faces(). Instead,
- DoFTools::make_periodicity_constraints() now accepts a parameter
- @p first_vector_components in all (supported) variants.
- <br>
- (Matthias Maier, 2015/08/21)
- </li>
-
- <li> Changed: FEValues::normal_vector() for historical reasons returned a
- value of type Point, though a normal vector is more adequately described
- as a Tensor@<1,dim@>. Many similar cases were already clarified in deal.II
- 8.3. The current case has now also been changed: FEValues::normal_vector()
- now returns a Tensor, rather than a Point.
- <br>
- In a similar spirit, the FEValues::get_normal_vectors() function that
- still returns a vector of Points has been deprecated, and a new function,
- FEValues::get_all_normal_vectors() that returns a vector of tensors,
- has been added. This was necessary since there is no way to change the
- return type of the existing function in a backward compatible way. The
- old function will be removed in the next version, and the new function
- will then be renamed to the old name.
- <br>
- (Wolfgang Bangerth, 2015/08/20)
- </li>
-
- <li> Changed: The mesh_converter program has been removed from the
- contrib folder. The equivalent functionality can now be found in
- the GridIn class.
- <br>
- (Jean-Paul Pelteret, 2015/08/12)
- </li>
-
- <li> Changed: The signature of the FiniteElement::fill_fe_values(),
- FiniteElement::fill_fe_face_values(), and FiniteElement::fill_fe_subface_values()
- functions has been changed, in an effort to clarify which of these contain
- input information and which contain output information for these functions.
- The same has been done for the corresponding functions in the Mapping
- class hierarchy.
- <br>
- Likewise the signature of FiniteElement::get_data() has been changed.
- <br>
- As part of a general overhaul, the FEValuesData class
- has also been removed.
- <br>
- (Wolfgang Bangerth, 2015/07/20-2015/08/13)
- </li>
-
- <li> Changed: The functions update_once() and update_each() in the
- Mapping classes computed information that was, in essence, only of use
- internally. No external code actually needed to know which
- pieces of information a mapping could compute once and which they needed
- to compute on every cell. Consequently, these two functions have been
- removed and have been replaced by Mapping::requires_update_flags().
- <br>
- A similar change has been applied to the FiniteElement class.
- <br>
- (Wolfgang Bangerth, 2015/07/20-2015/12/01)
- </li>
-
- <li> Changed: The function DoFRenumbering::random() now produces different
- numberings than it did before, but in return has now acquired the property
- that its results are predictable and repeatable.
- <br>
- (Wolfgang Bangerth, 2015/07/21)
- </li>
</ol>
<a name="general"></a>
<h3>General</h3>
-<ol>
- <li> New: A variant for GridGenerator::subdivided_parallelepiped() was added
- that supports meshes embedded in higher dimesional spaces.
- <br>
- (Timo Heister, 2016/02/04)
- </li>
-
- <li> Fixed: Partitioning using METIS now works correctly with more
- domains than cells.
- <br>
- (Timo Heister, 2016/01/26)
- </li>
-
- <li> New: The documentation of step-17 has been completely rewritten,
- and many aspects of how one has to think when writing parallel programs
- have been much better documented now.
- <br>
- (Wolfgang Bangerth, 2016/01/07)
- </li>
-
- <li> New: deal.II now provides a string <code>DEAL_II_ALWAYS_INLINE</code>
- that, when supported by the compiler, can be used to annotate functions
- to ensure that the compiler always inlines them.
- <br>
- (Matthias Maier, Wolfgang Bangerth, 2016/01/07)
- </li>
-
- <li> New: There is a new documentation module, @ref Concepts, which describes the meaning
- behind template parameter type names.
- <br>
- (David Wells, 2015/12/09)
- </li>
-
- <li> Changed: The template type name arguments of some classes no longer
- shadow class names. Additionally, template type names are now much more
- consistent across deal.II.
- <br>
- (David Wells, 2015/10/18 - 2016/01/23)
- </li>
-
- <li> New: The WorkStream class's design and implementation are now much
- better documented in the form of a @ref workstream_paper "preprint".
- <br>
- (Wolfgang Bangerth, 2015/11/29)
- </li>
-
- <li> New: There is now much more documentation for the FiniteElement class,
- in particular detailing what one needs to implement when writing finite
- element descriptions in derived classes.
- <br>
- (Wolfgang Bangerth, 2015/11/29)
- </li>
-
- <li> New: There is now a function template numbers::signaling_nan() that
- is used to create invalid floating point objects. These objects can either
- be scalars, or of type Tensor, SymmetricTensor, or DerivativeForm. The
- content of these objects is a "signaling NaN" ("NaN" stands for "not a
- number", and "signaling" implies that at least on platforms where this
- is supported, any arithmetic operation using them terminates the program).
- The purpose of this is to use them as markers for uninitialized objects
- and arrays that are required to be filled in other places, and to trigger
- an error when this later initialization does not happen before the first
- use.
- <br>
- (Wolfgang Bangerth, Timo Heister, 2015/11/24)
- </li>
-
- <li> Changed: The function FE_DGPNonparametric::shape_value() and similar
- functions in the same class returned values and derivatives of shape
- functions on the reference cell. However, this element is not defined
- through mapping of shape functions from the reference cell, and consequently
- it makes no sense to ask for this information. These functions have therefore
- been changed to throw an exception instead, as documented in
- FiniteElement::shape_value().
- <br>
- (Wolfgang Bangerth, 2015/11/20)
- </li>
-
- <li> Changed: The functionality to distribute cells across processes
- according to a vector of cell weights that was passed in a call to
- parallel::distributed::Triangulation::repartition()
- was replaced by a cell-wise signal. This signal is called during
- parallel::distributed::Triangulation::execute_coarsening_and_refinement() and
- parallel::distributed::Triangulation::repartition()
- if any function is connected to it. It allows to connect a function that
- takes the current cell iterator and a status argument that indicates whether
- this cell will be refined, coarsened or remains unchanged and returns a
- cell weight, which will be used to distribute cells across processes in a
- way that keeps the sum of weights across each individual process
- approximately equal.
- <br>
- (Rene Gassmoeller, 2015/11/02)
- </li>
-
- <li> New: Preliminary support for parallel, adaptive, geometric multigrid is
- now in place with changes to MGConstrainedDoFs (many new functions), MGTransfer,
- MGTools::extract_inner_interface_dofs, MGTransferPrebuilt,
- DoFTools::extract_locally_relevant_level_dofs.
- <br>
- (Timo Heister, Guido Kanschat, 2015/10/26)
- </li>
-
- <li> New: Two cell level signals are added to class Triangulation, namely
- pre_coarsening_on_cell and post_refinement_on_cell.
- <br>
- (Lei Qiao, 2015/10/22)
- </li>
-
- <li> New: parallel::distributed::Triangulation::ghost_owners()
- returns the set of MPI ranks of the ghost cells. Similarly
- parallel::distributed::Triangulation::level_ghost_owners() for level
- ghosts.
- <br>
- (Timo Heister, 2015/09/30)
- </li>
-
- <li> Improved: The interfaces to all deal.II type solvers and
- preconditioners have been updated such that they function as expected
- with the LinearOperator class and its associated functions (i.e.,
- linear_operator(), transpose_operator() and inverse_operator()).
- These preconditioners can now be wrapped as a LinearOperator,
- facilitating the construction of approximate matrix inverses such as in
- the development of a block matrix preconditioner. An example of this
- functionality can be found in
- <code>tests/lac/linear_operator_08.cc</code>.
- <br>
- (Jean-Paul Pelteret, 2015/09/24 - 2015/10/19)
- </li>
-
- <li> New: MGTransferPrebuilt can now be used with parallel::distributed::Vector
- and TrilinosWrappers::SparseMatrix as a transfer matrix.
- <br>
- (Martin Kronbichler, 2015/09/22)
- </li>
-
- <li> Fixed: parallel::distributed::Vector is now fully functional for
- indices larger than 4 billion.
- <br>
- (Martin Kronbichler, 2015/09/22)
- </li>
-
- <li> New: PArpackSolver eigensolver interface class.
- <br>
- (Denis Davydov, 2015/09/17)
- </li>
-
- <li> Changed: All doxygen-generated pages now contain a link to the
- tutorial in their top-level menus.
- <br>
- (Wolfgang Bangerth, 2015/09/13)
- </li>
-
- <li>New: A new namespace TensorAccessors is introduced that contains
- generic algorithms for tensorial objects, i.e., objects that allow
- repeated access via the index operator <code>operator[](unsigned int)</code>.
- The methods in TensorAccessors is primarily meant to replace old internal
- code in <code>tensor.h</code>, but it might also proof useful otherwise.
- <br>
- (Matthias Maier, 2015/09/11)
- </li>
-
- <li> New: A python script (including instructions) for enabling pretty
- printing with GDB is now available in
- <tt>/contrib/utilities/dotgdbinit.py</tt>.
- <br>
- (Wolfgang Bangerth, David Wells, 2015/09/11)
- </li>
-
- <li> Improved: When available, deal.II now uses the "gold" linker, a
- reimplementation of the traditional Unix "ld" linker that is substantially
- faster. This reduces build and, in particular, test turnaround times.
- <br>
- (Wolfgang Bangerth, Matthias Maier, 2015/09/06)
- </li>
-
- <li> Cleanup: The interface of Tensor<rank,dim,Number> has been cleaned
- up (a lot of unnecessary partial template specializations have been
- removed). The specialization Tensor<1,dim,Number> has been removed.
- <br>
- (Matthias Maier, 2015/09/02)
- </li>
-
- <li> Improved: The testsuite now supports multiple comparison files.
- Apart from the main comparison file that ends in
- <code>[...].output</code> all files of the form
- <code>[...].output.[string]</code> are considered for comparison.
- <br>
- (Matthias Maier, 2015/08/29)
- </li>
-
- <li> New: A class BlockLinearOperator has been introduced that extends
- the LinearOperator concept to block structures. A BlockLinearOperator can
- be sliced back to a LinearOperator.
- <br>
- (Matthias Maier, 2015/08/27)
- </li>
-
- <li> Improved: Support for complex number types throughout the library.
- Several parts of the library have been reorganized to support complex
- number types.
- <br>
- <em>Classes that are now instantiated for complex number types:</em>
- - FunctionTime
- - Function
- - TensorFunction
- <br>
- <em>Classes with fixed interface that now fully support complex number
- types (pure template classes without explicit instantiations in the
- library):</em>
- - LinearOperator
- - PackagedOperation
- - Tensor
- <br>
- (Matthias Maier, 2015/08/25)
- </li>
-
- <li> Fixed: The testsuite now properly supports version constraints for
- features. Those are annotated by
- <code>.with_FEATURE(<=|>=|=|<|>)VERSION.</code>.
- <br>
- (Matthias Maier, 2015/08/25)
- </li>
-
- <li> Improved: The interface and documentation for periodic boundary
- conditions have been restructured. A
- @ref GlossPeriodicConstraints "glossary entry" has been written.
- <br>
- (Daniel Arndt, Matthias Maier, 2015/08/01-2015/08/21)
- </li>
-
- <li> New: There is a new documentation module on
- @ref FE_vs_Mapping_vs_FEValues "How Mapping, FiniteElement, and FEValues work together".
- <br>
- (Wolfgang Bangerth, 2015/08/20)
- </li>
-
- <li> New: parallel::shared::Triangulation class which extends
- Triangulation class to automatically partition triangulation when run
- with MPI. Common functionality between parallel::shared::Triangulation and
- parallel::distributed::Triangulation is implemented in the parent class
- parallel::Triangulation.
- <br>
- (Denis Davydov, 2015/08/14)
- </li>
-
- <li> New: The online documentation of all functions now includes
- links to the file and line where that function is implemented. Both
- are clickable to provide immediate access to the source code of a
- function.
- <br>
- (Jason Sheldon, Wolfgang Bangerth, 2015/08/13)
- </li>
-
- <li> New: FE_RannacherTurek describes a discontinuous FiniteElement
- with vanishing mean values of jumps across faces.
- <br>
- (Patrick Esser, 2015/08/17)
- </li>
-
- <li> New: FE_Q_Bubbles describes a FiniteElement based on FE_Q
- enriched by bubble functions.
- <br>
- (Daniel Arndt, 2015/08/12)
- </li>
-
- <li> New: The testsuite now runs in a mode in which we abort programs for
- floating point exceptions due to divisions by zero or other invalid arithmetic.
- <br>
- (Wolfgang Bangerth, 2015/07/29)
- </li>
-
- <li> New: MultithreadInfo::set_thread_limit() can now be called more than
- once and the environment variable DEAL_II_NUM_THREADS will be respected
- even if user code never calls it.
- <br>
- (Timo Heister, 2015/07/26)
- </li>
-
- <li> New: IndexSet now implements iterators.
- <br>
- (Timo Heister, 2015/07/12)
- </li>
+<ol>
</ol>
<h3>Specific improvements</h3>
-
<ol>
- <li> New: FunctionParser now supports <code>rand()</code> and
- <code>rand_seed(number)</code>, which return a random value in the
- range [0,1].
- <br>
- (Wolfgang Bangerth, Luca Heltai, Alberto Sartori, 2016/02/09)
- </li>
-
- <li> Fixed: FullMatrix::TmTmult for matrix multiplication used to compute
- wrong results for larger matrix sizes where external BLAS is called. This
- has been fixed.
- <br>
- (Martin Kronbichler, 2016/02/02)
- </li>
-
- <li> Fixed: parallel::distributed::Triangulation with periodic boundary
- conditions did not respect 2:1 balance over vertices on periodic
- boundaries. This lead to incomplete ghost layers on multigrid levels. This
- has been fixed.
- <br>
- (Martin Kronbichler, Timo Heister, 2016/01/27)
- </li>
-
- <li> Fixed: SparseVanka now really uses second-order couplings for the
- right-hand side of the local problems.
- <br>
- (Florian Sonner, 2016/01/27)
- </li>
-
- <li> Fixed: A bug in the Neumann boundary handling of KellyErrorEstimator
- in 1d has been fixed and KellyErrorEstimator now correctly handles
- codimension one problems by using the correct normals from the manifold
- inside the gradient jump computation.
- <br>
- (Andrea Bonito, Timo Heister, 2016/01/21)
- </li>
-
- <li> New: The new class MGTransferMatrixFree implements multigrid level
- transfer using local polynomial embedding and restriction with tensor
- product evaluation techniques. This is a faster and less memory-demanding
- alternative to MGTransferPrebuilt.
- <br>
- (Martin Kronbichler, 2016/01/20)
- </li>
-
- <li> New: hp::FECollection now has constructors which take
- multiple finite elements as arguments.
- <br>
- (Angel Rodriguez, 2016/01/18)
- </li>
-
- <li> New: The glossary now contains a long entry describing what
- the term "scalability" means in the context of finite element codes.
- See @ref GlossParallelScaling.
- <br>
- (Wolfgang Bangerth, 2016/01/11)
- </li>
-
- <li> Fixed: Tensor::operator[] that takes TableIndices as a parameter no
- longer returns by value, but rather by reference. Tensor::operator<< for
- dim==0 now accesses values by reference instead of making a copy. This is
- useful when non-trivial number types are stored.
- <br>
- (Jean-Paul Pelteret, 2016/01/08)
- </li>
-
- <li> New: constrained_linear_operator() and constrained_right_hand_side()
- provide a generic mechanism of applying constraints to a LinearOperator.
- A detailed explanation with example code is given in the @ref constraints
- module.
- <br>
- (Mauro Bardelloni, Matthias Maier, 2015/10/25 - 2015/12/27)
- </li>
-
- <li> New: OpenCASCADE::read_IGES() and OpenCASCADE::read_STEP() have
- been unified in behaviour, and now they allow to extract *all* elements of
- the IGES and STEP files instead of only the faces. This allows the
- use of iges files describing edges only to be used as input for some of
- the OpenCASCADE Manifold wrappers.
- <br>
- (Luca Heltai, 2015/12/13)
- </li>
-
- <li> New: A new linear operator representing the Schur complement,
- namely schur_complement(), has been implemented. Some auxiliary functions
- that are often used in conjunction with the Schur complement
- (condense_schur_rhs() and postprocess_schur_solution()) are also provided
- as a PackagedOperation.
- An example of this functionality can be found in
- <code>tests/lac/schur_complement_01.cc</code>.
- The solution of a multi-component problem (namely step-22) using the
- schur_complement can be found in
- <code>tests/lac/schur_complement_03.cc</code> .
- <br>
- (Jean-Paul Pelteret, Matthias Maier, Martin Kronbichler, 2015/12/07)
- </li>
-
- <li> New: There is now a function Utilities::to_string that works like
- int_to_string, but is more safe for long integers, negative integers, and
- also handles floating point numbers. The implementation of int_to_string
- was changed to simply call to_string. int_to_string is kept for
- compatibility, but should only be used for unsigned integers.
- <br>
- (Rene Gassmoeller, 2015/12/09)
- </li>
-
- <li> Fixed: GridOut::write_msh() and GridOut::write_ucd() used the same
- geometric element numbers for lines and faces. This caused visualization
- programs to ignore parts with repeated geometric element numbers. This is now
- fixed.
- <br>
- (David Wells, 2016/01/16)
- </li>
-
- <li> New: DoFTools::extract_dofs() are now instantiated also for
- codimension different from zero.
- <br>
- (Alberto Sartori, 2016/01/13)
- </li>
-
- <li> Fixed: The DataOutFaces class should now also work with triangulations
- of type parallel::distributed::Triangulation.
- <br>
- (Heikki Virtanen, Wolfgang Bangerth, 2016/01/11)
- </li>
-
- <li> Fixed: AlignedVector<T>::fill() (and thus, Table<N,T>::reinit) did not
- correctly call the destructor of T() and could leak memory for complicated
- class types that depend on their constructor to free memory.
- <br>
- (Martin Kronbichler, 2016/01/08)
- </li>
-
- <li> Fixed: inverse_operator() now populates <code>Tvmult</code> and
- <code>Tvmult_add</code> correctly.
- <br>
- (Jean-Paul Pelteret, David Wells, Matthias Maier, 2015/12/30)
- </li>
-
- <li> New: MGTransferPrebuilt with parallel adaptive refinement has been
- finalized for parallel::distributed::Vector.
- <br>
- (Martin Kronbichler, 2015/12/23)
- </li>
-
- <li> Fixed: Now all members in the class SparseMatrixEZ are initialized
- correctly in the constructor. This was causing random crashes before.
- <br>
- (Timo Heister, 2015/12/21)
- </li>
-
- <li> New: There is now a new class ArrayView that presents a chunk of
- memory as if it was an array of fixed size. This is eventually going
- to replace the VectorSlice class which suffers from the defect that
- its template argument does not encode the type of objects it points
- to, but instead the type of the underlying container; consequently,
- where the VectorSlice class is used as a function argument, it
- automatically ties the type of object the function can be called
- with (i.e., the underlying container) even if the called function
- has no actual use for this kind of information.
- <br>
- (Wolfgang Bangerth, 2015/12/20)
- </li>
-
- <li> Fixed: Handling of constraints in step-26 was incorrect (hanging nodes
- were condensed twice) leading to garbage solutions. This is now fixed.
- <br>
- (Timo Heister, 2015/12/20)
- </li>
-
- <li> Fixed: The implementation of ShiftedMatrixGeneralized contained several
- errors that prevented it from being compiled. These have now been fixed.
- <br>
- (David Wells, 2015/12/18)
- </li>
-
- <li> New: There is now a function Triangulation::get_triangulation() that
- allows writing code to get at the underlying triangulation for
- everything that looks like a container, i.e., both Triangulation
- or DoFHandler objects.
- <br>
- (Wolfgang Bangerth, 2015/12/10)
- </li>
-
- <li> Deprecated: The functions DoFHandler::get_tria() and
- hp::DoFHandler::get_tria() were deprecated. UseDoFHandler::get_triangulation() and
- hp::DoFHandler::get_triangulation() instead.
- <br>
- (Wolfgang Bangerth, 2015/12/10)
- </li>
-
- <li> New: parallel::distributed::Vector has now a method to return a shared
- pointer to the underlying partitioner object.
- <br>
- (Martin Kronbichler, 2015/12/07)
- </li>
-
- <li> Improved: Many more functions in namespace GridTools and class
- InterGridMap are now consistely instantiated also for types
- parallel::distributed::Triangulation and parallel::shared::Triangulation.
- <br>
- (Gennadiy Rishin, Wolfgang Bangerth, 2015/12/07)
- </li>
-
- <li> Improved: Both versions of SparsityTools::distribute_sparsity_pattern()
- are now plain, not
- template, functions. This is not a breaking change because each function was
- instantiated for exactly one template argument.
- <br>
- (David Wells, 2015/12/06)
- </li>
-
- <li> Improved: The method
- parallel::distributed::Triangulation::fill_vertices_with_ghost_neighbors()
- that is used for distributing DoFs on parallel triangulations previously
- exhibited quadratic complexity in the number of coarse grid cells. This has
- been changed into linear complexity calls (apart from a few issues
- inside p4est).
- <br>
- (Martin Kronbichler, 2015/12/05)
- </li>
-
- <li> New: There are now new functions
- GridTools::build_triangulation_from_patch() and
- GridTools::get_cells_at_coarsest_common_level() that help build patches
- around individual cells.
- <br>
- (Arezou Ghesmati, 2015/12/02)
- </li>
-
- <li> Fixed: The GridTools::copy_boundary_to_manifold_id() function
- only copied boundary indicators from faces, but in 3d forgot about
- edges. This is now fixed.
- <br>
- (Wolfgang Bangerth, 2015/11/30)
- </li>
-
- <li> Fixed: The constructor of SymmetricTensor that takes an array
- of initializing elements led to a compiler error. This is now
- fixed.
- <br>
- (Wolfgang Bangerth, 2015/11/28)
- </li>
-
- <li> Fixed: parallel::distributed::Vector now detects if the size of MPI
- messages exceeds 2GB or if the local range exceeds the size of 32-bit
- integers and throws an exception informing about the unsupported sizes.
- <br>
- (Martin Kronbichler, 2015/11/26)
- </li>
-
- <li> New: In 3d, GridGenerator::extract_boundary_mesh() now copies the
- manifold ids of edges of the volume mesh to the manifold ids of the edges
- of the extracted surface mesh.
- <br>
- (Wolfgang Bangerth, 2015/11/25)
- </li>
-
- <li> New: Triangulation::create_triangulation() now accepts subcell-data
- objects that may include information about interior edges and faces, to
- facilitate setting manifold indicators on interior edges and faces.
- <br>
- (Wolfgang Bangerth, 2015/11/25)
- </li>
-
- <li> Fixed: GridGenerator::extract_boundary_mesh() in 3d could generate
- surface cells that did not uniformly had a right- or left-handed coordinate
- system associated with them when viewed from one side of the surface. This
- has been fixed: they now all have a right-handed coordinate system when seen
- from one side of the surface, and a left-handed one when viewed from the
- other side.
- <br>
- (Daniel Weygand, Wolfgang Bangerth, 2015/11/22)
- </li>
-
- <li> Fixed: Trilinos ML preconditioner is now deterministic when using
- version 12.4 or newer.
- <br>
- (Timo Heister, 2015/11/16)
- </li>
-
- <li> New: Extra parameters to GD and Lanczos SLEPc solvers. Also added unit tests.
- <br>
- (Denis Davydov, 2015/11/09)
- </li>
-
- <li> Fixed: FETools::project_dg was adding the vector projection to
- the output vector. Now is the output vector initialized to zero.
- <br>
- (Adam Kosik, 2015/11/09)
- </li>
-
- <li> Fixed: A compilation issue with DEAL_II_INCLUDE_DIRS not used for
- compiling bundled boost.
- <br>
- (Lukas Korous, 2015/11/01)
- </li>
-
- <li> New: 2nd derivatives are implemented for PolynomialsBDM in 3D.
- <br>
- (Alistair Bentley, 2015/10/27)
- </li>
-
- <li> Fixed: PolynomialsBDM::degree() now returns the correct value.
- <br>
- (Alistair Bentley, 2015/10/24)
- </li>
-
- <li> New: Triangulation::set_all_manifold_ids_on_boundary(boundary_id, manifold_id)
- which sets the manifold_id for all parts of the boundary with a given boundary_id.
- <br>
- (Alberto Sartori, 2015/10/22)
- </li>
-
- <li> Fixed: The range vectors in the construction of an
- inverse_operator() is now reinitialised before solve calls. This ensures
- a consistent starting point for the solver.
- <br>
- (Jean-Paul Pelteret, 2015/10/19)
- </li>
-
- <li> New: Ghost cells for the multigrid levels in
- parallel::distributed::Triangulation are now correctly created also for
- periodic boundary conditions.
- <br>
- (Martin Kronbichler, 2015/10/18)
- </li>
-
- <li> Fixed: GridGenerator::subdivided_parallelepiped() produced
- invalid, unconnected meshes and wrong boundary indicators.
- <br>
- (Timo Heister, 2015/10/13)
- </li>
-
- <li> Improved: DoFTools::compute_intergrid_transfer_representation
- can now be used with a fine grid given by a parallel::Triangulation.
- <br>
- (Alexander Grayver, 2015/10/09)
- </li>
-
- <li> New: GridIn::read_unv() can now read more element codes that
- are used in typical meshes.
- <br>
- (Aslan Kosakian, 2015/10/06)
- </li>
-
- <li> New: FunctionParser now supports <code>pow(a,b)</code>.
- <br>
- (Timo Heister, 2015/09/30)
- </li>
-
- <li> New: DoFTools::locally_relevant_dofs_per_subdomain() can be used
- to extract an IndexSet of locally relevant DoFs for a Triangulation
- partitioned using METIS or with a parallel::shared::Triangulation .
- <br>
- (Jean-Paul Pelteret, 2015/09/24)
- </li>
-
- <li> Fixed: hp::SolutionTransfer could get confused when dealing with
- FE_Nothing elements. This is now fixed.
- <br>
- (Claire Bruna-Rosso, Wolfgang Bangerth, 2015/09/23)
- </li>
-
- <li> Improved: The construction of the non-local graph for quick data
- exchange of TrilinosWrappers::SparseMatrix became very slow for a few
- thousand processors. This has been fixed.
- <br>
- (Martin Kronbichler, 2015/09/22)
- </li>
-
- <li> Improved: Initializing a TrilinosWrappers::SparseMatrix from a
- DynamicSparsityPattern included some O(global_size) operations. These have
- been replaced by operations only on the local range.
- <br>
- (Martin Kronbichler, 2015/09/22)
- </li>
-
- <li> Changed: All doxygen-generated pages now contain a link to the
- tutorial in their top-level menus.
- <br>
- (Wolfgang Bangerth, 2015/09/13)
- </li>
-
- <li>Cleanup: Constructors of AdditionalData in various linear solvers are now marked
- explicit. This avoid bugs with implicit conversions like the one fixed in step-40.
- <br>
- (Timo Heister, Lei Qiao, 2015/09/09)
- </li>
-
- <li>New: Introduced third-order derivatives of the shape functions, which
- can now be accessed through FEValues and FEValuesViews using similar interfaces
- as shape_values, shape_derivatives and shape_hessians.
- (Maien Hamed, 2015/09/08)
- </li>
-
- <li>Cleanup: TableIndices<N> can now be used (constructed and accessed)
- with N > 7.
- <br>
- (Matthias Maier, 2015/09/08)
- </li>
-
- <li>New: std::begin and std::end are now available within the std_cxx11
- namespace through <base/std_cxx11/iterator.h>
- <br>
- (Matthias Maier, 2015/09/08)
- </li>
-
- <li>New: MappingQ1Eulerian was not instantiated for the various
- Trilinos vector types. It is now instantiated for the same
- vector types as MappingQEulerian is.
- <br>
- (Wolfgang Bangerth, 2015/09/08)
- </li>
-
- <li>New: Introduced Hessian-related functions to the Function class.
- <br>
- (Denis Davydov, 2015/09/08)
- </li>
-
- <li>New: Memory consumption during compilation has been reduced by splitting
- instantiation files. For this make_instantiations now supports additional
- logic to split the the instantiations in .inst files into groups. This is
- used in fe_values.cc, error_estimator.cc, and others.
- <br>
- (Timo Heister, 2015/09/05)
- </li>
-
- <li> Improved: Allow continuation lines in ParameterHandler. Any line in a
- parameter file ending with a <tt>\\</tt> will now be combined with the next
- line; see ParameterHandler's documentation for more information.
- <br>
- (Alberto Sartori, 2015/09/04, David Wells, 2016/01/18-2016/01/28)
- </li>
-
- <li> New: There is now a function SparsityPattern::print_svg() which prints
- the sparsity of the matrix in a .svg file which can be opened in a web
- browser.
- <br>
- (Conrad Clevenger, 2015/09/03)
- </li>
-
- <li> Openmp SIMD support is now enabled for Clang version 3.6, or newer
- (or the equivalent XCode version). Further, openmp support is not any
- more falsely activated for very old clang versions.
- <br>
- (Matthias Maier, 2015/09/03)
- </li>
-
- <li> Improved: DoFTools::make_hanging_node_constraints() now supports
- hp-refinement cases when neither_element_dominates. To that end we look for
- a least face dominating FE inside FECollection.
- <br>
- (Denis Davydov, 2015/09/02)
- </li>
-
- <li> Changed: FEValues::transform() has been deprecated. The functionality
- of this function is a (small) subset of what the Mapping classes
- already provide.
- <br>
- (Wolfgang Bangerth, 2015/09/02)
- </li>
-
- <li> New: introduced hp::FECollection::find_least_face_dominating_fe(const
- std::set<unsigned int> &fes) which aims to find the least dominating finite
- element w.r.t. those provided as fe_indices in @p fes.
- <br>
- (Denis Davydov, Wolfgang Bangerth, 2015/08/31)
- </li>
-
- <li> New: step-6 now has an additional subsection in the
- "Possibilities for extensions" section that discusses how
- to create a better mesh.
- <br>
- (Konstantin Ladutenko, Wolfgang Bangerth, 2015/08/31)
- </li>
-
- <li> New: Introduce an option for FE_Nothing to dominate any other FE.
- Therefore at interfaces where, for example, a Q1 meets an FE_Nothing,
- we will force the traces of the two functions to be the same. Because the
- FE_Nothing encodes a space that is zero everywhere, this means that the Q1
- field will be forced to become zero at this interface.
- <br>
- (Denis Davydov, 2015/08/31)
- </li>
-
- <li> Fixed: VectorTools::integrate_difference() for VectorTools::Hdiv_seminorm
- was computed incorrectly.
- <br>
- (Timo Heister, 2015/08/31)
- </li>
-
- <li> New: Jacobian second and third derivatives are now computed by the mapping classes and can be
- accessed through FEValues in much the same way as the Jacobian and Jacobian gradient.
- <br>
- (Maien Hamed, 2015/08/28-2015/08/31)
- </li>
-
- <li> Fixed: The GridIn class was not instantiated for the
- <code>dim==1,spacedim==3</code> case. This is now fixed.
- <br>
- (Wolfgang Bangerth, 2015/08/25)
- </li>
-
- <li> Fixed: In 1d, GridIn::read_msh() ignored boundary indicators
- associated with vertices. This is now fixed.
- <br>
- (Jan Stebel, Wolfgang Bangerth, 2015/08/25)
- </li>
-
- <li> New: There are now a collection of functions named GridTools::compute_active_cell_halo_layer()
- that determine which cells form a layer around a specified subdomain. There is also a function
- GridTools::compute_ghost_cell_halo_layer() that returns the smallest layer of ghost cells around
- all locally relevant cells.
- <br>
- (Jean-Paul Pelteret, Denis Davydov, Wolfgang Bangerth, 2015/08/21)
- </li>
-
- <li> Documentation: How to set up a testsuite in a user project is now
- properly documented.
- <br>
- (Matthias Maier, 2015/08/01 - 2015/08/20)
- </li>
-
- <li> Fixed: The computation of gradients in FE_PolyTensor and its derived classes (in particular in
- FE_RaviartThomas and FE_Nedelec) forgot to account for terms that appear on non-affine
- cells. Consequently, the computed gradients did not match the actual derivatives of the values
- these elements report. This is now fixed.
- <br>
- (Maien Hamed, 2015/08/18-2015/08/20)
- </li>
-
- <li> Improved: Generalized conversion between Tensor<order+1,dim> and
- DerivativeForm<order,dim,dim> to general order using converting constructor
- and assignment operator.
- <br>
- (Maien Hamed, 2015/08/01-2015/08/09)
- </li>
-
- <li> Changed: The function Vector::ratio() and the corresponding
- functions in other vector classes have been deprecated.
- <br>
- (Wolfgang Bangerth, Bruno Turcksin, 2015/08/13)
- </li>
-
- <li> New: Direct support for Abaqus mesh files has been added to the GridIn
- class through the function GridIn::read_abaqus().
- <br>
- (Jean-Paul Pelteret, Timo Heister, Krzysztof Bzowski, 2015/08/12)
- </li>
-
- <li> Improved: Finite elements now compute hessians analytically rather than
- by finite differencing.
- <br>
- (Maien Hamed, 2015/08/01-2015/08/09)
- </li>
-
- <li> New: The InterpolatedTensorProductGridData::gradient() function
- is now implemented.
- <br>
- (Daniel Shapero, 2015/08/12)
- </li>
-
- <li> New: There is now a function Mapping::project_real_point_to_unit_point_on_face()
- that calls Mapping::transform_real_to_unit_cell() and then projects the
- result to a provided face.
- <br>
- (Jason Sheldon, 2015/08/11)
- </li>
-
- <li> New: FEFaceValues and FESubfaceValues can now also compute
- gradients of the Jacobian of the transformation from unit to real cell,
- controlled by update_jacobian_grads.
- <br>
- (Martin Kronbichler, 2015/08/08)
- </li>
-
- <li> New: There is now a function MemoryConsumption::memory_consumption()
- for std_cxx11::unique_ptr arguments.
- <br>
- (Wolfgang Bangerth, 2015/08/07)
- </li>
-
- <li> Improved: CMake configuration: The DEAL_II_ADD_TEST now also
- supports unit tests writing to stdout and stderr. Further, a second test
- type consisting of an internal executable target, a configuration and a
- comparison file is now supported.
- <br>
- (Matthias Maier, 2015/08/03)
- </li>
-
- <li> New: VtkFlags now stores a parameter describing the compression level
- zlib uses when writing compressed output. For small problems, the flag
- ZlibCompressionLevel::best_speed can make the call to write_vtu many times
- faster.
- <br>
- (David Wells, 2015/08/03)
- </li>
-
- <li> Improved: The conversion Epetra_Map -> IndexSet is now an O(1)
- operation for contiguous index ranges, improving over the old O(N) behavior.
- <br>
- (Martin Kronbichler, 2015/07/30)
- </li>
-
- <li> Changed: The initialization methods of TrilinosWrappers::SparseMatrix,
- TrilinosWrappers::BlockSparseMatrix, TrilinosWrappers::SparsityPattern, and
- TrilinosWrappers::BlockSparsityPattern with Epetra_Map arguments have been
- marked as deprecated. Use the functions with IndexSet argument instead.
- <br>
- (Martin Kronbichler, Luca Heltai, 2015/07/30)
- </li>
-
- <li> New: FESystem now does some work in parallel if your system
- has multiple processors.
- <br>
- (Wolfgang Bangerth, 2015/07/19)
- </li>
-
- <li> Fixed: When using FESystem with base elements that require
- information other than the determinant of the Jacobian (e.g.,
- elements that require the Jacobian itself), then this information
- was not passed down to FiniteElement::fill_fe_values of the
- base element. This is now fixed.
- <br>
- (Wolfgang Bangerth, Zhen Tao, 2015/07/17)
- </li>
-
- <li> New: The parallel::distributed::Triangulation can now be told to
- partition the cells so that the sum of certain weights associated with each
- cell, rather than the number of cells, is roughly constant between processors.
- This is done by passing a vector of weights to the function that repartitions
- the triangulation, parallel::distributed::Triangulation::repartition().
- <br>
- (Wolfgang Bangerth, 2015/07/14)
- </li>
-
- <li> New: DataOutBase::TecplotFlags now takes a third argument for solution
- time which is useful to visualize transient data. If a user sets a non-negative
- time, it will be saved into the tecplot file.
- <br>
- (Praveen Chandrashekar, 2015/08/30)
- </li>
-
</ol>
*/
projects / dealii.git / commitdiff