From: Matthias Maier Date: Thu, 9 Mar 2017 21:21:49 +0000 (-0600) Subject: Reformat and improve introduction X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35133730e2e91fb3e3f3e2b6bed5cca3ea91c7c6;p=release-papers.git Reformat and improve introduction --- diff --git a/8.5/paper.tex b/8.5/paper.tex index c311816..1ae6776 100644 --- a/8.5/paper.tex +++ b/8.5/paper.tex @@ -123,8 +123,11 @@ GNU Lesser General Public License (LGPL) from the \dealii{} homepage at The major changes of this release are: \marginpar{Add one sentence to each of the following.} \begin{itemize} -\item The \texttt{CellDataStorage} class provides a mechanism to store user-defined data on each cell. -This data is treated as a first-class citizen to \dealii{} and, when used in conjunction with other classes, can be shipped to other MPI cores during mesh refinement and repartitioning. +\item The \texttt{CellDataStorage} class provides a mechanism to store + user-defined data on each cell. This data is treated as a first-class + citizen to \dealii{} and, when used in conjunction with other classes, + can be shipped to other MPI cores during mesh refinement and + repartitioning. \item The \texttt{MappingManifold} class provides mappings between the reference cell and a mesh cell that is ``exact'' in the sense that @@ -133,13 +136,19 @@ This data is treated as a first-class citizen to \dealii{} and, when used in con approximations of the manifold. TODO: Luca -\item The \texttt{LinearOperator} class has been extended to fully support {\trilinos} solvers. +\item The \texttt{LinearOperator} class has been extended by a generic + ``payload'' mechanism that allows to attach arbitrary additional + information to a \texttt{LinearOperator}. The mechanism was used to + implement a \texttt{TrilinosPayload} class to have full support for using + the suite of {\trilinos} iterative solvers and preconditioners with a + \texttt{LinearOperator}. -\item A dedicated physics module has been created to provide some standard definitions and operations used in continuum physics. +\item A dedicated physics module has been created to provide some standard + definitions and operations used in continuum mechanics. -\item \texttt{FE\_Enriched} +\item TODO \texttt{FE\_Enriched} -\item \texttt{FESeries} namespace, use in step-27 +\item TODO \texttt{FESeries} namespace, use in step-27 \item New tutorial programs step-55, step-56, and step-57, demonstrating parallel solvers for the Stokes equations, a multigrid @@ -151,7 +160,7 @@ This data is treated as a first-class citizen to \dealii{} and, when used in con \item New code gallery programs demonstrating \begin{enumerate} - \item[(i)] quasi-static visco-elastic material behavior, + \item[(i)] quasi-static visco-elastic material behavior, \item[(ii)] multiphase Navier-Stokes flow, \item[(iii)] the evolution of global-scale topography on planetary bodies, \item[(iv)] goal-oriented elastoplasticity. @@ -159,24 +168,29 @@ This data is treated as a first-class citizen to \dealii{} and, when used in con \item Various improvements for high-order elements, including a switch of support points in \texttt{FE\_Q} and \texttt{FE\_DGQ} to Gauss--Lobatto - support points, stable evaluation of high-order Legendre polynomials, and several - bugfixes for high-order polynomial mappings defined through the + support points, stable evaluation of high-order Legendre polynomials, and + several bugfixes for high-order polynomial mappings defined through the \texttt{MappingQ} class. -\item More than 230 other features and bugfixes.\\ - We realized that static code analyzers are valuable tools to improve and maintain the quality of the code in our library - on top off build and regression tests for a variety of setups using \href{https://cdash.kyomu.43-1.org/index.php?project=deal.II}{CDash}. - This release was tested with \href{http://cppcheck.sourceforge.net/}{Cppcheck}, - \href{https://www.viva64.com/en/pvs-studio/}{PVS-Studio} and \href{https://scan.coverity.com/}{Coverity-Scan}. - For the latter the current status can be observed \href{https://scan.coverity.com/projects/deal-ii}{online}. +\item We realized that static code analyzers are valuable tools to improve + and maintain the quality of the code in our library on top off build and + regression tests for a variety of setups using + \href{https://cdash.kyomu.43-1.org/index.php?project=deal.II}{CDash}. + This release was tested with + \href{http://cppcheck.sourceforge.net/}{Cppcheck}, + \href{https://www.viva64.com/en/pvs-studio/}{PVS-Studio} and + \href{https://scan.coverity.com/}{Coverity-Scan}. For the latter the + current status can be observed + \href{https://scan.coverity.com/projects/deal-ii}{online}. + + \item More than 230 other features and bugfixes. \end{itemize} The more important ones of these will be detailed in the following section. Information on how to cite \dealii{} is provided in Section \ref{sec:cite}. - \section{Significant changes to the library} This release of \dealii{} contains a number of large and significant changes @@ -202,14 +216,27 @@ TODO: Luca \subsection{Extension of the \texttt{LinearOperator} class} -By introduction of an arbitrary \texttt{Payload} base class, the \texttt{LinearOperator} class can be extended to seamlessly exploit the native features and operations offered by external linear algebra libraries. -We have thus developed a \texttt{TrilinosPayload} class, through which full support for the suite of {\trilinos} parallel iterative solvers and preconditioners has been achieved. -In the case of the construction of an \texttt{inverse\_operator}, both \dealii's built in solvers and those offered by {\trilinos} can be selected. -This has been achieved by using the \texttt{Epetra\_Operator} as the basis for the \texttt{TrilinosPayload}, for which the result of both standard and composite operations involving forward (\texttt{Apply()}) and inverse (\texttt{ApplyInverse()}) matrix-vector multiplication are collated using lambda functions. -It is envisaged that, in the future, similar can be done for the {\petsc} iterative solvers. - -An additional feature of the \texttt{LinearOperator} suite is the defintion of a \texttt{schur\_complement} operator, and its associated condensation and post-processing \texttt{PackagedOperation}s. -An operator representing the Schur complement of a block system can be declared and, though the delayed evaluation offered by \texttt{PackagedOperation}s, reused on any number of vector systems. +By introduction of an arbitrary \texttt{Payload} base class, the +\texttt{LinearOperator} class can be extended to seamlessly exploit the +native features and operations offered by external linear algebra +libraries. We have thus developed a \texttt{TrilinosPayload} class, through +which full support for the suite of {\trilinos} parallel iterative solvers +and preconditioners has been achieved. In the case of the construction of +an \texttt{inverse\_operator}, both \dealii's built in solvers and those +offered by {\trilinos} can be selected. This has been achieved by using the +\texttt{Epetra\_Operator} as the basis for the \texttt{TrilinosPayload}, +for which the result of both standard and composite operations involving +forward (\texttt{Apply()}) and inverse (\texttt{ApplyInverse()}) +matrix-vector multiplication are collated using lambda functions. It is +envisaged that, in the future, similar can be done for the {\petsc} +iterative solvers. + +An additional feature of the \texttt{LinearOperator} suite is the defintion +of a \texttt{schur\_complement} operator, and its associated condensation +and post-processing \texttt{PackagedOperation}s. An operator representing +the Schur complement of a block system can be declared and, though the +delayed evaluation offered by \texttt{PackagedOperation}s, reused on any +number of vector systems. \subsection{The physics module}