\usepackage[normalem]{ulem}
+\usepackage{todonotes}
+
\pgfplotsset{compat=1.9}
\newcommand{\specialword}[1]{\texttt{#1}}
The major changes of this release are:
%
\begin{itemize}
-\item
+\item xy \todo[inline]{Update once we have the subsections in Section 2;
+ provide cross-references to each of these subsections}
% \item Improved support for automatic differentiation (see
-% Section~\ref{subsec:ad}),
-% \item Dedicated support for symbolic algebra (see
-% Section~\ref{subsec:sd}),
-% \item Full support for $hp$~adaptivity in parallel computations (see
-% Section~\ref{subsec:hp}),
-% \item An interface to the HDF5 file format and libraries (see
-% Section~\ref{subsec:hdf5}),
-% \item Significantly extended GPU support (see Section~\ref{subsec:gpu}),
-% \item Parallel geometric multigrid (GMG) improvements (see
-% \cite{ClevengerHeisterKanschatKronbichler2019} and
-% Section~\ref{subsec:gmg}),
-% \item Four new tutorial programs (step-61, step-62, step-63, step-64),
-% as well as one new code gallery program (see
-% Section~\ref{subsec:steps}).
+% Section~\ref{subsec:ad}),
\end{itemize}
%
The major changes are discussed in detail in Section~\ref{sec:major}. There
that we briefly outline in the remainder of this section:
%
\begin{itemize}
-\item
-% \item
-% The release contains a number of performance improvements and bug fixes for
-% the matrix-free framework. One notable improvement is the support for
-% renumbering of degrees of freedom within the cells for discontinuous
-% elements, avoiding some reshuffling operations across the SIMD lanes
-% with vectorization over several cells and faces, which is especially
-% useful on processors with AVX-512 vectorization (8 doubles), speeding up
-% operations by up to 10\%. Secondly, the strategy for the most efficient
-% tensor product evaluators according to the performance analysis of
-% \cite{KronbichlerKormann2019} in the context of more quadrature points than
-% shape functions has been revised for better performance.
-%
-% \item A new class \texttt{ParsedConvergenceTable} has been introduced
-% that greatly simplifies the construction of convergence tables,
-% reading the options for the generation of the table from a parameter
-% file, and providing methods that, combined with a parameter file,
-% allow one to generate convergence tables using one-liners in user
-% codes.
-%
-% \item
-% The \texttt{FE\_BernardiRaugel} class implements the non-standard
-% Bernardi-Raugel (BR) element that can be used to construct a stable
-% velocity-pressure pair for the Stokes equation \cite{BR85}. The BR
-% element is an enriched version of the $Q_1^d$ element with added bubble
-% functions on each edge (in 2d) or face (in 3d). It addresses the fact
-% that the $Q_1^d\times Q_0$ combination is not inf-sup stable (requiring a
-% larger velocity space), and that the $Q_2^d\times Q_0$ combination is
-% stable but converges with only first-order at the cost of the large
-% number of velocity unknowns. The BR space is thus intermediate between the
-% $Q_1^d$ and $Q_2^d$ spaces.
-%
-% The element is currently only implemented for parallelogram meshes due to
-% difficulties associated with the mapping of shape functions: The shape
-% functions of the $Q_1^d$ part of the element need to be mapped as
-% scalars, as is common for the vector components of the $Q_1^d$ element;
-% on the other hand, the vector-valued edge bubble functions need to be
-% mapped using the Piola transform as is common for the Raviart-Thomas
-% element. \dealii{} does not currently have the ability to use different
-% mappings for individual shape functions, though this functionality is
-% planned for the next release.
-%
-% \item
-% The \texttt{FE\_NedelecSZ} class is a new implementation of the
-% N{\'e}d{\'e}lec element on quadrilaterals and hexahedra. It is based on
-% the work of Zaglmayr \cite{Zag06} and overcomes the sign conflict issues
-% present in traditional N{\'e}d{\'e}lec elements that arise from the edge
-% and face parameterizations used in the basis functions. Therefore, this
-% element should provide consistent results for general quadrilateral and
-% hexahedral elements for which the relative orientations of edges and
-% faces (as seen from all adjacent cells) are often difficult to establish.
-% The \texttt{FE\_NedelecSZ} element addresses the sign conflict problem by
-% assigning a globally defined orientation to local edges and faces. A
-% detailed overview of the implementation of the \texttt{FE\_NedelecSZ}
-% element in \dealii{} can be found in \cite{Kynch2017}.
-%
-% \item All of the elementary geometrical objects of the library (namely
-% \texttt{Point<dim>}, \texttt{Segment<dim>}, and
-% \texttt{BoundingBox<dim>}) have been augmented with the traits
-% needed to comply with \texttt{boost::geometry} concepts. A new
-% interface to \texttt{boost::geometry::index::rtree} has been added
-% that simplifies the construction of spatial indices based on points,
-% bounding boxes, or segments.
+\item x \todo[inline]{Wolfgang to write about complex-valued output}
+\item y \todo[inline]{Timo to write about problems and fixes for
+ computations with more than $2^{32}$ unknowns}
+\item z \todo[inline]{What else?}
\end{itemize}
%
In addition to these changes, the changelog lists more than 200 other
\href{https://dealii.org/developer/doxygen/deal.II/changes_between_9_0_1_and_9_1_0.html}{
in the file that lists all changes for this release}, see \cite{changes91}.
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\subsection{bla1}
-\label{subsec:bla1}
-
-
-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{New and improved tutorial and code gallery programs}
\label{subsec:steps}
In addition, there are seven new tutorial programs:
\begin{itemize}
\item \texttt{step-47}
+\todo[inline]{Zhuoran to write}
\item \texttt{step-50}
+\todo[inline]{Timo/Conrad/... to write}
\item \texttt{step-58}
+\todo[inline]{Wolfgang to write}
\item \texttt{step-65}
+\todo[inline]{Martin to write}
\item \texttt{step-67}
+\todo[inline]{Martin to write}
\item \texttt{step-69}
+\todo[inline]{Matthias/Ignacio to write}
\item \texttt{step-70}
+ \todo[inline]{Also need to update announce and announce-short if this
+ makes it into the release.}
\end{itemize}
+\todo[inline]{Do we have new code gallery programs}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Support for large, fully distributed meshes}
+\label{subsec:pfT}
+
+\todo[inline]{Peter: Write something about p::f::T}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Better support for parallel $hp$-adaptive algorithms}
+\label{subsec:hp}
+
+\todo[inline]{Marc: Your section}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Support for particle-based methods}
+\label{subsec:particles}
+
+\todo[inline]{Luca: Your section}
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Python interfaces}
+\label{subsec:python}
+
+\todo[inline]{What's new here? mention step-49 and step-53 versions written in python.}
+
+
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{Incompatible changes}
The 9.2 release includes
\href{https://dealii.org/developer/doxygen/deal.II/changes_between_9_1_1_and_9_2_0.html}
- {around 15 incompatible changes}; see \cite{changes92}. The majority of these changes
+ {around 60 incompatible changes}; see \cite{changes92}. The majority of these changes
should not be visible to typical user codes; some remove previously
deprecated classes and functions; and the majority change internal
interfaces that are not usually used in external
applications. However, some are worth mentioning:
\begin{itemize}
\item
-% \item The \texttt{VectorView} class was removed. We recommend either copying the
-% vector subset into a \texttt{Vector} or using a \texttt{BlockVector}.
-% \item The function \texttt{Subscriptor::subscribe()}, used through the
-% \texttt{SmartPointer} class, now requires a pointer to a
-% \texttt{std::atomic<bool>} that tracks whether or not the pointer to the
-% subscribed-to object is still valid.
-% \item The \texttt{ConstraintMatrix} class gained a template parameter for the scalar
-% type and was been renamed \texttt{AffineConstraints}. Several methods that
-% take vectors or matrices as arguments,
-% such as \texttt{AffineConstraints::distribute\_local\_to\_global()},
-% now require that all matrix and vector arguments have matching number
-% types.
-% \item Similarly, the functions \texttt{create\_mass\_matrix} and
-% \texttt{create\_boundary\_mass\_matrix} in the \texttt{MatrixCreator}
-% namespace no longer
-% support matrix and vector objects of different types.
\end{itemize}
\dealii is a world-wide project with dozens of contributors around the
globe. Other than the authors of this paper, the following people
contributed code to this release:\\
-% updated 5/11/2020 MM - TODO: remove authors of paper
+% updated 5/11/2020 MM
+\todo[inline]{TODO: remove authors of paper}
Pasquale Africa,
Ashna Aggarwal,
Giovanni Alzetta,
projects / release-papers.git / commitdiff