Initial revision

darcs-hash:20010301114010-f6438-12fb8a9ffcc80e86c0a97e37b5b0dae0dbc59b79.gz

23 files changed, 1236 insertions, 0 deletions

diff --git a/CarpetExtra/WaveToyExpl/README b/CarpetExtra/WaveToyExpl/README
new file mode 100644
index 000000000..2b5cde667
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/README
@@ -0,0 +1,12 @@
+CVS info   : $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/README,v 1.1 2003/06/18 18:24:30 schnetter Exp $
+
+Cactus Code Thorn WaveToyExpl
+Thorn Author(s)     : Erik Schnetter <schnetter@uni-tuebingen.de>
+Thorn Maintainer(s) : Erik Schnetter <schnetter@uni-tuebingen.de>
+--------------------------------------------------------------------------
+
+Purpose of the thorn:
+
+Integrate the scalar wave equation with a multi-step integrator, but
+preserving the intermediate steps to allow fine grid boundary
+prolongation on them.
diff --git a/CarpetExtra/WaveToyExpl/configuration.ccl b/CarpetExtra/WaveToyExpl/configuration.ccl
new file mode 100644
index 000000000..848971fb3
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/configuration.ccl
@@ -0,0 +1,4 @@
+# Configuration definition for thorn Carpet/WaveToyExpl
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/configuration.ccl,v 1.2 2004/04/18 14:10:29 schnetter Exp $
+
+REQUIRES CartGrid3D
diff --git a/CarpetExtra/WaveToyExpl/doc/documentation.tex b/CarpetExtra/WaveToyExpl/doc/documentation.tex
new file mode 100644
index 000000000..a1a11c41b
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/doc/documentation.tex
@@ -0,0 +1,144 @@
+% *======================================================================*
+%  Cactus Thorn template for ThornGuide documentation
+%  Author: Ian Kelley
+%  Date: Sun Jun 02, 2002
+%  $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/doc/documentation.tex,v 1.1 2003/06/18 18:24:30 schnetter Exp $                                                             
+%
+%  Thorn documentation in the latex file doc/documentation.tex 
+%  will be included in ThornGuides built with the Cactus make system.
+%  The scripts employed by the make system automatically include 
+%  pages about variables, parameters and scheduling parsed from the 
+%  relevent thorn CCL files.
+%  
+%  This template contains guidelines which help to assure that your     
+%  documentation will be correctly added to ThornGuides. More 
+%  information is available in the Cactus UsersGuide.
+%                                                    
+%  Guidelines:
+%   - Do not change anything before the line
+%       % START CACTUS THORNGUIDE",
+%     except for filling in the title, author, date etc. fields.
+%        - Each of these fields should only be on ONE line.
+%        - Author names should be sparated with a \\ or a comma
+%   - You can define your own macros, but they must appear after
+%     the START CACTUS THORNGUIDE line, and must not redefine standard 
+%     latex commands.
+%   - To avoid name clashes with other thorns, 'labels', 'citations', 
+%     'references', and 'image' names should conform to the following 
+%     convention:          
+%       ARRANGEMENT_THORN_LABEL
+%     For example, an image wave.eps in the arrangement CactusWave and 
+%     thorn WaveToyC should be renamed to CactusWave_WaveToyC_wave.eps
+%   - Graphics should only be included using the graphix package. 
+%     More specifically, with the "includegraphics" command. Do
+%     not specify any graphic file extensions in your .tex file. This 
+%     will allow us (later) to create a PDF version of the ThornGuide
+%     via pdflatex. |
+%   - References should be included with the latex "bibitem" command. 
+%   - Use \begin{abstract}...\end{abstract} instead of \abstract{...}
+%   - Do not use \appendix, instead include any appendices you need as 
+%     standard sections. 
+%   - For the benefit of our Perl scripts, and for future extensions, 
+%     please use simple latex.     
+%
+% *======================================================================* 
+% 
+% Example of including a graphic image:
+%    \begin{figure}[ht]
+% 	\begin{center}
+%    	   \includegraphics[width=6cm]{MyArrangement_MyThorn_MyFigure}
+% 	\end{center}
+% 	\caption{Illustration of this and that}
+% 	\label{MyArrangement_MyThorn_MyLabel}
+%    \end{figure}
+%
+% Example of using a label:
+%   \label{MyArrangement_MyThorn_MyLabel}
+%
+% Example of a citation:
+%    \cite{MyArrangement_MyThorn_Author99}
+%
+% Example of including a reference
+%   \bibitem{MyArrangement_MyThorn_Author99}
+%   {J. Author, {\em The Title of the Book, Journal, or periodical}, 1 (1999), 
+%   1--16. {\tt http://www.nowhere.com/}}
+%
+% *======================================================================* 
+
+% If you are using CVS use this line to give version information
+% $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/doc/documentation.tex,v 1.1 2003/06/18 18:24:30 schnetter Exp $
+
+\documentclass{article}
+
+% Use the Cactus ThornGuide style file
+% (Automatically used from Cactus distribution, if you have a 
+%  thorn without the Cactus Flesh download this from the Cactus
+%  homepage at www.cactuscode.org)
+\usepackage{../../../../doc/latex/cactus}
+
+\begin{document}
+
+% The author of the documentation
+\author{Erik Schnetter \textless schnetter@uni-tuebingen.de\textgreater}
+
+% The title of the document (not necessarily the name of the Thorn)
+\title{}
+
+% the date your document was last changed, if your document is in CVS, 
+% please use:
+%    \date{$ $Date: 2003/06/18 18:24:30 $ $}
+\date{June 17 2003}
+
+\maketitle
+
+% Do not delete next line
+% START CACTUS THORNGUIDE
+
+% Add all definitions used in this documentation here 
+%   \def\mydef etc
+
+% Add an abstract for this thorn's documentation
+\begin{abstract}
+
+\end{abstract}
+
+% The following sections are suggestive only.
+% Remove them or add your own.
+
+\section{Introduction}
+
+\section{Physical System}
+
+\section{Numerical Implementation}
+
+\section{Using This Thorn}
+
+\subsection{Obtaining This Thorn}
+
+\subsection{Basic Usage}
+
+\subsection{Special Behaviour}
+
+\subsection{Interaction With Other Thorns}
+
+\subsection{Examples}
+
+\subsection{Support and Feedback}
+
+\section{History}
+
+\subsection{Thorn Source Code}
+
+\subsection{Thorn Documentation}
+
+\subsection{Acknowledgements}
+
+
+\begin{thebibliography}{9}
+
+\end{thebibliography}
+
+% Do not delete next line
+% END CACTUS THORNGUIDE
+
+\end{document}
diff --git a/CarpetExtra/WaveToyExpl/interface.ccl b/CarpetExtra/WaveToyExpl/interface.ccl
new file mode 100644
index 000000000..231d8e0ee
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/interface.ccl
@@ -0,0 +1,30 @@
+# Interface definition for thorn WaveToyExpl
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/interface.ccl,v 1.3 2004/05/21 17:43:57 schnetter Exp $
+
+IMPLEMENTS: WaveToyExpl
+
+INHERITS: grid
+
+
+
+CCTK_INT FUNCTION Boundary_SelectGroupForBC(CCTK_POINTER_TO_CONST IN GH, \
+  CCTK_INT IN faces, CCTK_INT IN boundary_width, CCTK_INT IN table_handle, \
+  CCTK_STRING IN group_name, CCTK_STRING IN bc_name)
+
+REQUIRES FUNCTION Boundary_SelectGroupForBC
+
+
+
+PUBLIC:
+
+CCTK_REAL scalarevolve TYPE=gf TIMELEVELS=3
+{
+  phi psi
+} "Scalar field"
+
+PRIVATE:
+
+CCTK_REAL scalarevolveint TYPE=gf TIMELEVELS=3
+{
+  phiint psiint
+} "Intermediate values of the scalar field"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d.gnu b/CarpetExtra/WaveToyExpl/par/ew1d.gnu
new file mode 100644
index 000000000..06a1e309f
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d.gnu
@@ -0,0 +1,19 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d.gnu,v 1.1 2003/06/18 18:24:30 schnetter Exp $
+
+set grid
+
+dt=0.05
+f(x)=cos(2*pi*(x+0.5*t*dt))
+
+t=400
+
+
+p [0:1] "ew1d_1l_0020/phi.xl" i t u 10:13 w l, "ew1d_1l_0040/phi.xl" i t u 10:13 w l, "ew1d_1l_0080/phi.xl" i t u 10:13 w l, f(x)
+
+p [0:1] "ew1d_1l_0020/phi.xl" i t u 10:($13-f($10)) w l, "ew1d_1l_0040/phi.xl" i t u 10:(4*($13-f($10))) w l, "ew1d_1l_0080/phi.xl" i t u 10:(16*($13-f($10))) w l
+
+
+
+p [0:1] "ew1d_2l_0020/phi.xl" i 2*t u 10:13 w l, "ew1d_2l_0040/phi.xl" i 2*t u 10:13 w l, "ew1d_2l_0080/phi.xl" i 2*t u 10:13 w l, "ew1d_2l_0160/phi.xl" i 2*t u 10:13 w l, "ew1d_2l_0320/phi.xl" i 2*t u 10:13 w l, f(x)
+
+p [0:1] "ew1d_2l_0020/phi.xl" i 2*t u 10:($13-f($10)) w l, "ew1d_2l_0040/phi.xl" i 2*t u 10:(4*($13-f($10))) w l, "ew1d_2l_0080/phi.xl" i 2*t u 10:(16*($13-f($10))) w l, "ew1d_2l_0160/phi.xl" i 2*t u 10:(64*($13-f($10))) w l, "ew1d_2l_0320/phi.xl" i 2*t u 10:(256*($13-f($10))) w l
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_1l_0020.par b/CarpetExtra/WaveToyExpl/par/ew1d_1l_0020.par
new file mode 100644
index 000000000..5f559808e
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_1l_0020.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_1l_0020.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 3200
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 16
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 24
+driver::global_ny = 7
+driver::global_nz = 7
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 1
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([28,6,6]:[68,16,16]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.1
+grid::ymin = -0.15
+grid::zmin = -0.15
+grid::xmax = +1.05
+grid::ymax = +0.15
+grid::zmax = +0.15
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_1l_0020"
+
+IOBasic::outInfo_every = 16
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 16
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 16
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 16
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_1l_0040.par b/CarpetExtra/WaveToyExpl/par/ew1d_1l_0040.par
new file mode 100644
index 000000000..9e17b21d3
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_1l_0040.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_1l_0040.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 6400
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 32
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 44
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 1
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([48,4,4]:[128,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.05
+grid::ymin = -0.05
+grid::zmin = -0.05
+grid::xmax = +1.025
+grid::ymax = +0.05
+grid::zmax = +0.05
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_1l_0040"
+
+IOBasic::outInfo_every = 32
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 32
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 32
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 32
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_1l_0080.par b/CarpetExtra/WaveToyExpl/par/ew1d_1l_0080.par
new file mode 100644
index 000000000..317a31c3e
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_1l_0080.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_1l_0080.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 12800
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 64
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 84
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 1
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([88,4,4]:[248,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.025
+grid::ymin = -0.025
+grid::zmin = -0.025
+grid::xmax = +1.0125
+grid::ymax = +0.025
+grid::zmax = +0.025
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_1l_0080"
+
+IOBasic::outInfo_every = 64
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 64
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 64
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 64
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_2l_0020.par b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0020.par
new file mode 100644
index 000000000..1655ca90c
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0020.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_2l_0020.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 3200
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 16
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 24
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 2
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([28,4,4]:[68,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.1
+grid::ymin = -0.1
+grid::zmin = -0.1
+grid::xmax = +1.05
+grid::ymax = +0.1
+grid::zmax = +0.1
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_2l_0020"
+
+IOBasic::outInfo_every = 16
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 16
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 16
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 16
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_2l_0040.par b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0040.par
new file mode 100644
index 000000000..9a03d1161
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0040.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_2l_0040.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 6400
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 32
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 44
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 2
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([48,4,4]:[128,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.05
+grid::ymin = -0.05
+grid::zmin = -0.05
+grid::xmax = +1.025
+grid::ymax = +0.05
+grid::zmax = +0.05
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_2l_0040"
+
+IOBasic::outInfo_every = 32
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 32
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 32
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 32
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_2l_0080.par b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0080.par
new file mode 100644
index 000000000..19f8e285f
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0080.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_2l_0080.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 12800
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 64
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 84
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 2
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([88,4,4]:[248,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.025
+grid::ymin = -0.025
+grid::zmin = -0.025
+grid::xmax = +1.0125
+grid::ymax = +0.025
+grid::zmax = +0.025
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_2l_0080"
+
+IOBasic::outInfo_every = 64
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 64
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 64
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 64
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_2l_0160.par b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0160.par
new file mode 100644
index 000000000..c35b6f512
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0160.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_2l_0160.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 25600
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 128
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 164
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 2
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([168,4,4]:[488,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.0125
+grid::ymin = -0.0125
+grid::zmin = -0.0125
+grid::xmax = +1.00625
+grid::ymax = +0.0125
+grid::zmax = +0.0125
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_2l_0160"
+
+IOBasic::outInfo_every = 128
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 128
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 128
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 128
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/par/ew1d_2l_0320.par b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0320.par
new file mode 100644
index 000000000..03637dfb0
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/par/ew1d_2l_0320.par
@@ -0,0 +1,94 @@
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/par/ew1d_2l_0320.par,v 1.2 2004/03/23 12:00:28 schnetter Exp $
+
+Cactus::cctk_initial_time = 0
+Cactus::cctk_itlast = 51200
+
+
+
+ActiveThorns = "LocalInterp NaNChecker Slab"
+
+NaNChecker::check_every = 256
+NaNChecker::check_vars = "all"
+NaNChecker::action_if_found = terminate
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetRegrid CarpetInterp CarpetReduce CarpetSlab"
+
+driver::global_nx = 324
+driver::global_ny = 5
+driver::global_nz = 5
+driver::ghost_size = 2
+
+#Carpet::verbose = yes
+#Carpet::veryverbose = yes
+Carpet::max_refinement_levels = 3
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time = 2
+#Carpet::init_3_timelevels = yes
+Carpet::init_each_timelevel = yes
+
+#CarpetLib::output_bboxes = yes
+
+CarpetRegrid::refinement_levels = 2
+CarpetRegrid::refined_regions = manual-gridpoint-list
+CarpetRegrid::gridpoints = "[[ ([328,4,4]:[968,12,12]:[2,2,2]) ]]"
+CarpetRegrid::outerbounds = "[[ [[0,0],[1,1],[1,1]] ]]"
+
+
+
+ActiveThorns = "Boundary CartGrid3D Periodic"
+
+grid::domain = full
+grid::type = byrange
+grid::xmin = -0.00625
+grid::ymin = -0.00625
+grid::zmin = -0.00625
+grid::xmax = +1.003125
+grid::ymax = +0.00625
+grid::zmax = +0.00625
+
+Periodic::periodic = yes
+
+
+
+ActiveThorns = "Time"
+
+Time::dtfac = 0.25
+
+
+
+ActiveThorns = "IDScalarWaveExpl WaveToyExpl"
+
+IDScalarWaveExpl::wave_number[0] = 1.0
+
+
+
+ActiveThorns = "Dissipation"
+
+Dissipation::epsdis = 0.1
+Dissipation::timelevel = "n+1"
+Dissipation::vars = "WaveToyExpl::scalarevolve"
+
+
+
+ActiveThorns = "IOUtil IOBasic CarpetIOASCII"
+
+IO::out_dir = "ew1d_2l_0320"
+
+IOBasic::outInfo_every = 256
+IOBasic::outInfo_vars = "WaveToyExpl::phi"
+ 
+IOBasic::outScalar_every = 256
+IOBasic::outScalar_reductions = "minimum maximum norm1 norm2 norm_inf"
+IOBasic::outScalar_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::output_all_timelevels = yes
+
+IOASCII::out1D_every = 256
+IO::out_yline_x = 0.5
+IO::out_zline_x = 0.5
+IOASCII::out1D_vars = "WaveToyExpl::scalarevolve"
+
+#IOASCII::out3D_every = 256
+#IOASCII::out3D_vars = "WaveToyExpl::scalarevolve"
diff --git a/CarpetExtra/WaveToyExpl/param.ccl b/CarpetExtra/WaveToyExpl/param.ccl
new file mode 100644
index 000000000..99aeaa2c1
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/param.ccl
@@ -0,0 +1,7 @@
+# Parameter definitions for thorn WaveToyExpl
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/param.ccl,v 1.1 2003/06/18 18:24:30 schnetter Exp $
+
+STRING bound "Type of boundary condition to use"
+{
+  .* :: "must be a registered boundary condition"
+} "None"
diff --git a/CarpetExtra/WaveToyExpl/schedule.ccl b/CarpetExtra/WaveToyExpl/schedule.ccl
new file mode 100644
index 000000000..8ef598e24
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/schedule.ccl
@@ -0,0 +1,77 @@
+# Schedule definitions for thorn WaveToyExpl
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/schedule.ccl,v 1.3 2003/11/05 16:18:40 schnetter Exp $
+
+STORAGE: scalarevolve[3]
+STORAGE: scalarevolveint[3]
+
+
+
+SCHEDULE WaveToyExpl_Startup AT startup
+{
+  LANG: Fortran
+} "Register banner"
+
+SCHEDULE WaveToyExpl_InitSymBound AT basegrid
+{
+  LANG: Fortran
+  OPTIONS: global
+} "Schedule symmetries"
+
+
+
+SCHEDULE WaveToyExpl_IntInit AT postinitial
+{
+  LANG: Fortran
+} "Initialise intermediate variables"
+
+
+
+SCHEDULE WaveToyExpl_IntStep AT evol
+{
+  LANG: Fortran
+} "Calculate intermediate step"
+
+SCHEDULE WaveToyExpl_IntBoundaries AT evol AFTER WaveToyExpl_IntStep
+{
+  LANG: Fortran
+  SYNC: scalarevolveint
+} "Select boundary conditions after intermediate step"
+
+SCHEDULE GROUP ApplyBCs AS WaveToyExpl_ApplyIntBoundaries AT evol AFTER WaveToyExpl_IntBoundaries
+{
+} "Apply boundary conditions after intermediate step"
+
+
+
+SCHEDULE WaveToyExpl_FinalStep AT evol AFTER WaveToyExpl_ApplyIntBoundaries
+{
+  LANG: Fortran
+} "Calculate final step"
+
+SCHEDULE WaveToyExpl_FinalBoundaries AT evol AFTER WaveToyExpl_FinalStep
+{
+  LANG: Fortran
+  SYNC: scalarevolve
+} "Select boundary conditions after final step"
+
+SCHEDULE GROUP ApplyBCs AS WaveToyExpl_ApplyFinalBoundaries AT evol AFTER WaveToyExpl_FinalBoundaries
+{
+} "Apply boundary conditions after final step"
+
+
+
+SCHEDULE WaveToyExpl_IntBoundaries AT POSTRESTRICT
+{
+  LANG: Fortran
+  SYNC: scalarevolveint
+} "Select boundary conditions after restricting"
+
+SCHEDULE WaveToyExpl_FinalBoundaries AT POSTRESTRICT
+{
+  LANG: Fortran
+  SYNC: scalarevolve
+} "Select boundary conditions after restricting"
+
+SCHEDULE GROUP ApplyBCs AS WaveToyExpl_ApplyBoundaries AT POSTRESTRICT AFTER (WaveToyMoL_IntBoundaries, WaveToyMoL_FinalBoundaries)
+{
+} "Apply boundary conditions after restricting"
diff --git a/CarpetExtra/WaveToyExpl/src/finalboundaries.F77 b/CarpetExtra/WaveToyExpl/src/finalboundaries.F77
new file mode 100644
index 000000000..c00960fc3
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/finalboundaries.F77
@@ -0,0 +1,25 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/finalboundaries.F77,v 1.2 2003/10/27 15:31:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_FinalBoundaries (CCTK_ARGUMENTS)
+      implicit none
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      CCTK_INT bndwidth
+      parameter (bndwidth = 1)
+      character fbound*100
+      CCTK_INT  fboundlen
+      integer ierr
+      call CCTK_FortranString (fboundlen, bound, fbound)
+      if (fboundlen.lt.0) call CCTK_WARN (0, "internal error")
+      ierr = Boundary_SelectGroupForBC (cctkGH, CCTK_ALL_FACES, bndwidth, -1,
+     $     "WaveToyExpl::scalarevolve", fbound);
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      call CartSymGN (ierr, cctkGH, "WaveToyExpl::scalarevolve")
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      end
diff --git a/CarpetExtra/WaveToyExpl/src/finalstep.F77 b/CarpetExtra/WaveToyExpl/src/finalstep.F77
new file mode 100644
index 000000000..b4304d60e
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/finalstep.F77
@@ -0,0 +1,36 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/finalstep.F77,v 1.2 2003/10/27 15:31:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_FinalStep (CCTK_ARGUMENTS)
+      implicit none
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      CCTK_REAL dx(3), dt
+      integer i, j, k
+      integer d
+      do d=1,3
+         dx(d) = CCTK_DELTA_SPACE(d)
+      end do
+      dt = CCTK_DELTA_TIME
+      do k=1+cctk_nghostzones(3),cctk_lsh(3)-cctk_nghostzones(3)
+         do j=1+cctk_nghostzones(2),cctk_lsh(2)-cctk_nghostzones(2)
+            do i=1+cctk_nghostzones(1),cctk_lsh(1)-cctk_nghostzones(1)
+c     d/dt phi = psi
+               phi(i,j,k) = phi_p(i,j,k) + dt/2 * (psi_p(i,j,k) + psiint(i,j,k))
+c     d/dt psi = d^2/dx^2 phi
+               psi(i,j,k) = psi_p(i,j,k) + dt/2 *
+     $              ( (phi_p(i-1,j,k) - 2*phi_p(i,j,k) + phi_p(i+1,j,k)) / dx(1)**2
+     $              + (phi_p(i,j-1,k) - 2*phi_p(i,j,k) + phi_p(i,j+1,k)) / dx(2)**2
+     $              + (phi_p(i,j,k-1) - 2*phi_p(i,j,k) + phi_p(i,j,k+1)) / dx(3)**2
+     $              + (phiint(i-1,j,k) - 2*phiint(i,j,k) + phiint(i+1,j,k)) / dx(1)**2
+     $              + (phiint(i,j-1,k) - 2*phiint(i,j,k) + phiint(i,j+1,k)) / dx(2)**2
+     $              + (phiint(i,j,k-1) - 2*phiint(i,j,k) + phiint(i,j,k+1)) / dx(3)**2)
+            end do
+         end do
+      end do
+      end
diff --git a/CarpetExtra/WaveToyExpl/src/initsymbound.F77 b/CarpetExtra/WaveToyExpl/src/initsymbound.F77
new file mode 100644
index 000000000..2f4f182fc
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/initsymbound.F77
@@ -0,0 +1,23 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/initsymbound.F77,v 1.2 2003/10/27 15:31:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_InitSymBound (CCTK_ARGUMENTS)
+      implicit none
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      integer sym(3)
+      integer d
+      integer ierr
+      do d=1,3
+         sym(d) = +1
+      end do
+      call SetCartSymGN (ierr, cctkGH, sym, "WaveToyExpl::scalarevolve")
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      call SetCartSymGN (ierr, cctkGH, sym, "WaveToyExpl::scalarevolveint")
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      end
diff --git a/CarpetExtra/WaveToyExpl/src/intboundaries.F77 b/CarpetExtra/WaveToyExpl/src/intboundaries.F77
new file mode 100644
index 000000000..838729f73
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/intboundaries.F77
@@ -0,0 +1,25 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/intboundaries.F77,v 1.3 2003/11/05 16:18:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_IntBoundaries (CCTK_ARGUMENTS)
+      implicit none
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      CCTK_INT bndwidth
+      parameter (bndwidth = 1)
+      character fbound*100
+      CCTK_INT  fboundlen
+      integer ierr
+      call CCTK_FortranString (fboundlen, bound, fbound)
+      if (fboundlen.lt.0) call CCTK_WARN (0, "internal error")
+      ierr = Boundary_SelectGroupForBC (cctkGH, CCTK_ALL_FACES, bndwidth, -1,
+     $     "WaveToyExpl::scalarevolveint", fbound);
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      call CartSymGN (ierr, cctkGH, "WaveToyExpl::scalarevolveint")
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      end
diff --git a/CarpetExtra/WaveToyExpl/src/intinit.F77 b/CarpetExtra/WaveToyExpl/src/intinit.F77
new file mode 100644
index 000000000..b2ebbaea2
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/intinit.F77
@@ -0,0 +1,26 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/intinit.F77,v 1.2 2003/10/27 15:31:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_IntInit (CCTK_ARGUMENTS)
+      implicit none
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      integer i, j, k
+      do k=1,cctk_lsh(3)
+         do j=1,cctk_lsh(2)
+            do i=1,cctk_lsh(1)
+               phiint(i,j,k) = phi(i,j,k)
+               phiint_p(i,j,k) = phi_p(i,j,k)
+               phiint_p_p(i,j,k) = phi_p_p(i,j,k)
+               psiint(i,j,k) = psi(i,j,k)
+               psiint_p(i,j,k) = psi_p(i,j,k)
+               psiint_p_p(i,j,k) = psi_p_p(i,j,k)
+            end do
+         end do
+      end do
+      end
diff --git a/CarpetExtra/WaveToyExpl/src/intstep.F77 b/CarpetExtra/WaveToyExpl/src/intstep.F77
new file mode 100644
index 000000000..909842c2a
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/intstep.F77
@@ -0,0 +1,33 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/intstep.F77,v 1.2 2003/10/27 15:31:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_IntStep (CCTK_ARGUMENTS)
+      implicit none
+      DECLARE_CCTK_ARGUMENTS
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      CCTK_REAL dx(3), dt
+      integer i, j, k
+      integer d
+      do d=1,3
+         dx(d) = CCTK_DELTA_SPACE(d)
+      end do
+      dt = CCTK_DELTA_TIME
+      do k=1+cctk_nghostzones(3),cctk_lsh(3)-cctk_nghostzones(3)
+         do j=1+cctk_nghostzones(2),cctk_lsh(2)-cctk_nghostzones(2)
+            do i=1+cctk_nghostzones(1),cctk_lsh(1)-cctk_nghostzones(1)
+c     d/dt phi = psi
+               phiint(i,j,k) = phi_p(i,j,k) + dt * psi_p(i,j,k)
+c     d/dt psi = d^2/dx^2 phi
+               psiint(i,j,k) = psi_p(i,j,k) + dt *
+     $              ( (phi_p(i-1,j,k) - 2*phi_p(i,j,k) + phi_p(i+1,j,k)) / dx(1)**2
+     $              + (phi_p(i,j-1,k) - 2*phi_p(i,j,k) + phi_p(i,j+1,k)) / dx(2)**2
+     $              + (phi_p(i,j,k-1) - 2*phi_p(i,j,k) + phi_p(i,j,k+1)) / dx(3)**2)
+            end do
+         end do
+      end do
+      end
diff --git a/CarpetExtra/WaveToyExpl/src/make.code.defn b/CarpetExtra/WaveToyExpl/src/make.code.defn
new file mode 100644
index 000000000..d828a9051
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/make.code.defn
@@ -0,0 +1,9 @@
+# Main make.code.defn file for thorn WaveToyExpl
+# $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/make.code.defn,v 1.1 2003/06/18 18:24:30 schnetter Exp $
+
+# Source files in this directory
+SRCS = finalboundaries.F77 finalstep.F77 initsymbound.F77 intboundaries.F77 intinit.F77 intstep.F77 startup.F77
+
+# Subdirectories containing source files
+SUBDIRS = 
+
diff --git a/CarpetExtra/WaveToyExpl/src/startup.F77 b/CarpetExtra/WaveToyExpl/src/startup.F77
new file mode 100644
index 000000000..ce33d9a1c
--- /dev/null
+++ b/CarpetExtra/WaveToyExpl/src/startup.F77
@@ -0,0 +1,14 @@
+c     $Header: /home/eschnett/C/carpet/Carpet/CarpetExtra/WaveToyExpl/src/startup.F77,v 1.2 2003/10/27 15:31:40 schnetter Exp $
+
+#include "cctk.h"
+#include "cctk_Functions.h"
+#include "cctk_Parameters.h"
+
+      subroutine WaveToyExpl_Startup
+      implicit none
+      DECLARE_CCTK_FUNCTIONS
+      DECLARE_CCTK_PARAMETERS
+      integer ierr
+      call CCTK_RegisterBanner (ierr, "WaveToyExpl: Evolving a scalar field with explicit intermediate integration steps")
+      if (ierr.ne.0) call CCTK_WARN (0, "internal error")
+      end