Regenerate thorn ML_WaveToy and ML_WaveToy_CL

16 files changed, 1820 insertions, 0 deletions

diff --git a/ML_WaveToy/configuration.ccl b/ML_WaveToy/configuration.ccl
new file mode 100644
index 0000000..bdbc1bd
--- /dev/null
+++ b/ML_WaveToy/configuration.ccl
@@ -0,0 +1,5 @@
+# File produced by Kranc
+
+REQUIRES GenericFD
+REQUIRES LoopControl
+REQUIRES Vectors
diff --git a/ML_WaveToy/interface.ccl b/ML_WaveToy/interface.ccl
new file mode 100644
index 0000000..dbe441c
--- /dev/null
+++ b/ML_WaveToy/interface.ccl
@@ -0,0 +1,59 @@
+# File produced by Kranc
+
+implements: ML_WaveToy
+
+inherits:   Grid GenericFD Boundary
+
+
+
+USES INCLUDE: GenericFD.h
+USES INCLUDE: Symmetry.h
+USES INCLUDE: sbp_calc_coeffs.h
+USES INCLUDE: Boundary.h
+USES INCLUDE: loopcontrol.h
+USES INCLUDE: vectors.h
+
+CCTK_INT FUNCTION MoLRegisterEvolved(CCTK_INT IN EvolvedIndex, CCTK_INT IN RHSIndex)
+USES FUNCTION MoLRegisterEvolved
+
+SUBROUTINE Diff_coeff(CCTK_POINTER_TO_CONST IN cctkGH, CCTK_INT IN dir, CCTK_INT IN nsize, CCTK_INT OUT ARRAY imin, CCTK_INT OUT ARRAY imax, CCTK_REAL OUT ARRAY q, CCTK_INT IN table_handle)
+USES FUNCTION Diff_coeff
+
+CCTK_INT FUNCTION MultiPatch_GetMap(CCTK_POINTER_TO_CONST IN cctkGH)
+USES FUNCTION MultiPatch_GetMap
+
+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)
+USES FUNCTION Boundary_SelectGroupForBC
+
+CCTK_INT FUNCTION Boundary_SelectVarForBC(CCTK_POINTER_TO_CONST IN GH, CCTK_INT IN faces, CCTK_INT IN boundary_width, CCTK_INT IN table_handle, CCTK_STRING IN var_name, CCTK_STRING IN bc_name)
+USES FUNCTION Boundary_SelectVarForBC
+
+public:
+CCTK_REAL WT_eps type=GF timelevels=1 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  eps
+} "WT_eps"
+
+public:
+CCTK_REAL WT_rho type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  rho
+} "WT_rho"
+
+public:
+CCTK_REAL WT_u type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  u
+} "WT_u"
+
+public:
+CCTK_REAL WT_rhorhs type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  rhorhs
+} "WT_rhorhs"
+
+public:
+CCTK_REAL WT_urhs type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  urhs
+} "WT_urhs"
diff --git a/ML_WaveToy/param.ccl b/ML_WaveToy/param.ccl
new file mode 100644
index 0000000..e020967
--- /dev/null
+++ b/ML_WaveToy/param.ccl
@@ -0,0 +1,259 @@
+# File produced by Kranc
+
+
+shares: GenericFD
+
+
+
+shares: MethodOfLines
+
+USES CCTK_INT MoL_Num_Evolved_Vars
+USES CCTK_INT MoL_Num_ArrayEvolved_Vars
+
+restricted:
+CCTK_INT verbose "verbose" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_REAL amplitude "Amplitude of initial Gaussian"
+{
+  "*:*" :: ""
+} 1
+
+restricted:
+CCTK_REAL width "Width of initial Gaussian"
+{
+  "*:*" :: ""
+} 1
+
+private:
+KEYWORD initial_data "initial_data"
+{
+  "Gaussian" :: "Gaussian"
+  "Standing" :: "Standing"
+} "Gaussian"
+
+restricted:
+CCTK_INT ML_WaveToy_MaxNumEvolvedVars "Number of evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars STEERABLE=RECOVER
+{
+  2:2 :: "Number of evolved variables used by this thorn"
+} 2
+
+restricted:
+CCTK_INT ML_WaveToy_MaxNumArrayEvolvedVars "Number of Array evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_ArrayEvolved_Vars STEERABLE=RECOVER
+{
+  0:0 :: "Number of Array evolved variables used by this thorn"
+} 0
+
+restricted:
+CCTK_INT timelevels "Number of active timelevels" STEERABLE=RECOVER
+{
+  0:2 :: ""
+} 2
+
+restricted:
+CCTK_INT rhs_timelevels "Number of active RHS timelevels" STEERABLE=RECOVER
+{
+  0:2 :: ""
+} 1
+
+restricted:
+CCTK_INT other_timelevels "Number of active timelevels for non-evolved grid functions" STEERABLE=RECOVER
+{
+  0:2 :: ""
+} 1
+
+restricted:
+CCTK_INT WT_Gaussian_calc_every "WT_Gaussian_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WT_Standing_calc_every "WT_Standing_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WT_RHS_calc_every "WT_RHS_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WT_Dirichlet_calc_every "WT_Dirichlet_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WT_Energy_calc_every "WT_Energy_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WT_EnergyBoundary_calc_every "WT_EnergyBoundary_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WT_Gaussian_calc_offset "WT_Gaussian_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WT_Standing_calc_offset "WT_Standing_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WT_RHS_calc_offset "WT_RHS_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WT_Dirichlet_calc_offset "WT_Dirichlet_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WT_Energy_calc_offset "WT_Energy_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WT_EnergyBoundary_calc_offset "WT_EnergyBoundary_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+private:
+KEYWORD rho_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD u_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD WT_rho_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "none"
+
+private:
+KEYWORD WT_u_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "none"
+
+private:
+CCTK_REAL rho_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL u_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_rho_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_u_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL rho_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL u_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_rho_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_u_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL rho_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL u_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_rho_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_u_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
diff --git a/ML_WaveToy/schedule.ccl b/ML_WaveToy/schedule.ccl
new file mode 100644
index 0000000..2d0b031
--- /dev/null
+++ b/ML_WaveToy/schedule.ccl
@@ -0,0 +1,147 @@
+# File produced by Kranc
+
+
+if (other_timelevels == 1)
+{
+  STORAGE: WT_eps[1]
+}
+
+if (timelevels == 1)
+{
+  STORAGE: WT_rho[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: WT_rho[2]
+}
+
+if (timelevels == 1)
+{
+  STORAGE: WT_u[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: WT_u[2]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: WT_rhorhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: WT_rhorhs[2]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: WT_urhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: WT_urhs[2]
+}
+
+schedule ML_WaveToy_Startup at STARTUP
+{
+  LANG: C
+  OPTIONS: meta
+} "create banner"
+
+schedule ML_WaveToy_RegisterSymmetries in SymmetryRegister
+{
+  LANG: C
+  OPTIONS: meta
+} "register symmetries"
+
+
+if (CCTK_EQUALS(initial_data, "Gaussian"))
+{
+  schedule WT_Gaussian AT initial
+  {
+    LANG: C
+    READS:    grid::r
+    WRITES:   ML_WaveToy::rho
+    WRITES:   ML_WaveToy::u
+  } "WT_Gaussian"
+}
+
+
+if (CCTK_EQUALS(initial_data, "Standing"))
+{
+  schedule WT_Standing AT initial
+  {
+    LANG: C
+    READS:    grid::x
+    READS:    grid::y
+    READS:    grid::z
+    WRITES:   ML_WaveToy::rho
+    WRITES:   ML_WaveToy::u
+  } "WT_Standing"
+}
+
+schedule WT_RHS IN MoL_CalcRHS
+{
+  LANG: C
+  READS:    ML_WaveToy::rho
+  READS:    ML_WaveToy::u
+  WRITES:   ML_WaveToy::rhorhs
+  WRITES:   ML_WaveToy::urhs
+} "WT_RHS"
+
+schedule WT_Dirichlet IN MoL_CalcRHS
+{
+  LANG: C
+  WRITES:   ML_WaveToy::rhorhs
+  WRITES:   ML_WaveToy::urhs
+} "WT_Dirichlet"
+
+schedule WT_Dirichlet AT analysis
+{
+  LANG: C
+  SYNC: WT_rhorhs
+  SYNC: WT_urhs
+  WRITES:   ML_WaveToy::rhorhs
+  WRITES:   ML_WaveToy::urhs
+} "WT_Dirichlet"
+
+schedule WT_Energy AT analysis
+{
+  LANG: C
+  SYNC: WT_eps
+  READS:    ML_WaveToy::rho
+  READS:    ML_WaveToy::u
+  WRITES:   ML_WaveToy::eps
+} "WT_Energy"
+
+schedule WT_EnergyBoundary AT analysis
+{
+  LANG: C
+  SYNC: WT_eps
+  WRITES:   ML_WaveToy::eps
+} "WT_EnergyBoundary"
+
+schedule ML_WaveToy_SelectBoundConds in MoL_PostStep
+{
+  LANG: C
+  OPTIONS: level
+  SYNC: WT_rho
+  SYNC: WT_u
+} "select boundary conditions"
+
+schedule ML_WaveToy_CheckBoundaries at BASEGRID
+{
+  LANG: C
+  OPTIONS: meta
+} "check boundaries treatment"
+
+schedule ML_WaveToy_RegisterVars in MoL_Register
+{
+  LANG: C
+  OPTIONS: meta
+} "Register Variables for MoL"
+
+schedule group ApplyBCs as ML_WaveToy_ApplyBCs in MoL_PostStep after ML_WaveToy_SelectBoundConds
+{
+  # no language specified
+} "Apply boundary conditions controlled by thorn Boundary"
diff --git a/ML_WaveToy/src/Boundaries.cc b/ML_WaveToy/src/Boundaries.cc
new file mode 100644
index 0000000..1e5f99e
--- /dev/null
+++ b/ML_WaveToy/src/Boundaries.cc
@@ -0,0 +1,249 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "cctk_Faces.h"
+#include "util_Table.h"
+#include "Symmetry.h"
+
+
+/* the boundary treatment is split into 3 steps:    */
+/* 1. excision                                      */
+/* 2. symmetries                                    */
+/* 3. "other" boundary conditions, e.g. radiative */
+
+/* to simplify scheduling and testing, the 3 steps  */
+/* are currently applied in separate functions      */
+
+
+extern "C" void ML_WaveToy_CheckBoundaries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  return;
+}
+
+extern "C" void ML_WaveToy_SelectBoundConds(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  
+  if (CCTK_EQUALS(WT_rho_bound, "none"  ) ||
+      CCTK_EQUALS(WT_rho_bound, "static") ||
+      CCTK_EQUALS(WT_rho_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_rho_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "ML_WaveToy::WT_rho", WT_rho_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register WT_rho_bound BC for ML_WaveToy::WT_rho!");
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "none"  ) ||
+      CCTK_EQUALS(WT_u_bound, "static") ||
+      CCTK_EQUALS(WT_u_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_u_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "ML_WaveToy::WT_u", WT_u_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register WT_u_bound BC for ML_WaveToy::WT_u!");
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "none"  ) ||
+      CCTK_EQUALS(rho_bound, "static") ||
+      CCTK_EQUALS(rho_bound, "flat"  ) ||
+      CCTK_EQUALS(rho_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "ML_WaveToy::rho", rho_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register rho_bound BC for ML_WaveToy::rho!");
+  }
+  
+  if (CCTK_EQUALS(u_bound, "none"  ) ||
+      CCTK_EQUALS(u_bound, "static") ||
+      CCTK_EQUALS(u_bound, "flat"  ) ||
+      CCTK_EQUALS(u_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "ML_WaveToy::u", u_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register u_bound BC for ML_WaveToy::u!");
+  }
+  
+  if (CCTK_EQUALS(WT_rho_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_WT_rho_bound = -1;
+    if (handle_WT_rho_bound < 0) handle_WT_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_rho_bound , WT_rho_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_rho_bound ,WT_rho_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_rho_bound, 
+                      "ML_WaveToy::WT_rho", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToy::WT_rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_WT_u_bound = -1;
+    if (handle_WT_u_bound < 0) handle_WT_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_u_bound , WT_u_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_u_bound ,WT_u_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_u_bound, 
+                      "ML_WaveToy::WT_u", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToy::WT_u!");
+  
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_rho_bound = -1;
+    if (handle_rho_bound < 0) handle_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_rho_bound , rho_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_rho_bound ,rho_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_rho_bound, 
+                      "ML_WaveToy::rho", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToy::rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(u_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_u_bound = -1;
+    if (handle_u_bound < 0) handle_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_u_bound , u_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_u_bound ,u_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_u_bound, 
+                      "ML_WaveToy::u", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToy::u!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_rho_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_WT_rho_bound = -1;
+    if (handle_WT_rho_bound < 0) handle_WT_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_rho_bound ,WT_rho_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_rho_bound, 
+                      "ML_WaveToy::WT_rho", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for ML_WaveToy::WT_rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_WT_u_bound = -1;
+    if (handle_WT_u_bound < 0) handle_WT_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_u_bound ,WT_u_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_u_bound, 
+                      "ML_WaveToy::WT_u", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for ML_WaveToy::WT_u!");
+  
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_rho_bound = -1;
+    if (handle_rho_bound < 0) handle_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_rho_bound ,rho_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_rho_bound, 
+                      "ML_WaveToy::rho", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToy::rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(u_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_u_bound = -1;
+    if (handle_u_bound < 0) handle_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_u_bound ,u_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_u_bound, 
+                      "ML_WaveToy::u", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToy::u!");
+  
+  }
+  return;
+}
+
+
+
+/* template for entries in parameter file:
+#$bound$#ML_WaveToy::WT_rho_bound       = "skip"
+#$bound$#ML_WaveToy::WT_rho_bound_speed = 1.0
+#$bound$#ML_WaveToy::WT_rho_bound_limit = 0.0
+#$bound$#ML_WaveToy::WT_rho_bound_scalar = 0.0
+
+#$bound$#ML_WaveToy::WT_u_bound       = "skip"
+#$bound$#ML_WaveToy::WT_u_bound_speed = 1.0
+#$bound$#ML_WaveToy::WT_u_bound_limit = 0.0
+#$bound$#ML_WaveToy::WT_u_bound_scalar = 0.0
+
+#$bound$#ML_WaveToy::rho_bound       = "skip"
+#$bound$#ML_WaveToy::rho_bound_speed = 1.0
+#$bound$#ML_WaveToy::rho_bound_limit = 0.0
+#$bound$#ML_WaveToy::rho_bound_scalar = 0.0
+
+#$bound$#ML_WaveToy::u_bound       = "skip"
+#$bound$#ML_WaveToy::u_bound_speed = 1.0
+#$bound$#ML_WaveToy::u_bound_limit = 0.0
+#$bound$#ML_WaveToy::u_bound_scalar = 0.0
+
+*/
+
diff --git a/ML_WaveToy/src/Differencing.h b/ML_WaveToy/src/Differencing.h
new file mode 100644
index 0000000..f3bef4e
--- /dev/null
+++ b/ML_WaveToy/src/Differencing.h
@@ -0,0 +1,147 @@
+#include <assert.h>
+#include "vectors.h"
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth1(u) (kmul(p1o12dx,kadd(KRANC_GFOFFSET3D(u,-2,0,0),kmadd(KRANC_GFOFFSET3D(u,-1,0,0),ToReal(-8),kmsub(KRANC_GFOFFSET3D(u,1,0,0),ToReal(8),KRANC_GFOFFSET3D(u,2,0,0))))))
+#else
+#  define PDstandardNth1(u) (PDstandardNth1_impl(u,p1o12dx,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth1_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o12dx, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth1_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o12dx, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o12dx,kadd(KRANC_GFOFFSET3D(u,-2,0,0),kmadd(KRANC_GFOFFSET3D(u,-1,0,0),ToReal(-8),kmsub(KRANC_GFOFFSET3D(u,1,0,0),ToReal(8),KRANC_GFOFFSET3D(u,2,0,0)))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth2(u) (kmul(p1o12dy,kadd(KRANC_GFOFFSET3D(u,0,-2,0),kmadd(KRANC_GFOFFSET3D(u,0,-1,0),ToReal(-8),kmsub(KRANC_GFOFFSET3D(u,0,1,0),ToReal(8),KRANC_GFOFFSET3D(u,0,2,0))))))
+#else
+#  define PDstandardNth2(u) (PDstandardNth2_impl(u,p1o12dy,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth2_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o12dy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth2_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o12dy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o12dy,kadd(KRANC_GFOFFSET3D(u,0,-2,0),kmadd(KRANC_GFOFFSET3D(u,0,-1,0),ToReal(-8),kmsub(KRANC_GFOFFSET3D(u,0,1,0),ToReal(8),KRANC_GFOFFSET3D(u,0,2,0)))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth3(u) (kmul(p1o12dz,kadd(KRANC_GFOFFSET3D(u,0,0,-2),kmadd(KRANC_GFOFFSET3D(u,0,0,-1),ToReal(-8),kmsub(KRANC_GFOFFSET3D(u,0,0,1),ToReal(8),KRANC_GFOFFSET3D(u,0,0,2))))))
+#else
+#  define PDstandardNth3(u) (PDstandardNth3_impl(u,p1o12dz,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth3_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o12dz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth3_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o12dz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o12dz,kadd(KRANC_GFOFFSET3D(u,0,0,-2),kmadd(KRANC_GFOFFSET3D(u,0,0,-1),ToReal(-8),kmsub(KRANC_GFOFFSET3D(u,0,0,1),ToReal(8),KRANC_GFOFFSET3D(u,0,0,2)))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth11(u) (kmul(pm1o12dx2,kadd(KRANC_GFOFFSET3D(u,-2,0,0),kadd(KRANC_GFOFFSET3D(u,2,0,0),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,0),KRANC_GFOFFSET3D(u,1,0,0)),ToReal(-16),kmul(KRANC_GFOFFSET3D(u,0,0,0),ToReal(30)))))))
+#else
+#  define PDstandardNth11(u) (PDstandardNth11_impl(u,pm1o12dx2,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth11_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const pm1o12dx2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth11_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const pm1o12dx2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(pm1o12dx2,kadd(KRANC_GFOFFSET3D(u,-2,0,0),kadd(KRANC_GFOFFSET3D(u,2,0,0),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,0),KRANC_GFOFFSET3D(u,1,0,0)),ToReal(-16),kmul(KRANC_GFOFFSET3D(u,0,0,0),ToReal(30))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth22(u) (kmul(pm1o12dy2,kadd(KRANC_GFOFFSET3D(u,0,-2,0),kadd(KRANC_GFOFFSET3D(u,0,2,0),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,0),KRANC_GFOFFSET3D(u,0,1,0)),ToReal(-16),kmul(KRANC_GFOFFSET3D(u,0,0,0),ToReal(30)))))))
+#else
+#  define PDstandardNth22(u) (PDstandardNth22_impl(u,pm1o12dy2,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth22_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const pm1o12dy2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth22_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const pm1o12dy2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(pm1o12dy2,kadd(KRANC_GFOFFSET3D(u,0,-2,0),kadd(KRANC_GFOFFSET3D(u,0,2,0),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,0),KRANC_GFOFFSET3D(u,0,1,0)),ToReal(-16),kmul(KRANC_GFOFFSET3D(u,0,0,0),ToReal(30))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth33(u) (kmul(pm1o12dz2,kadd(KRANC_GFOFFSET3D(u,0,0,-2),kadd(KRANC_GFOFFSET3D(u,0,0,2),kmadd(kadd(KRANC_GFOFFSET3D(u,0,0,-1),KRANC_GFOFFSET3D(u,0,0,1)),ToReal(-16),kmul(KRANC_GFOFFSET3D(u,0,0,0),ToReal(30)))))))
+#else
+#  define PDstandardNth33(u) (PDstandardNth33_impl(u,pm1o12dz2,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth33_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const pm1o12dz2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth33_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const pm1o12dz2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(pm1o12dz2,kadd(KRANC_GFOFFSET3D(u,0,0,-2),kadd(KRANC_GFOFFSET3D(u,0,0,2),kmadd(kadd(KRANC_GFOFFSET3D(u,0,0,-1),KRANC_GFOFFSET3D(u,0,0,1)),ToReal(-16),kmul(KRANC_GFOFFSET3D(u,0,0,0),ToReal(30))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth12(u) (kmul(p1o144dxdy,kadd(KRANC_GFOFFSET3D(u,-2,-2,0),kadd(KRANC_GFOFFSET3D(u,2,2,0),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,1,0),KRANC_GFOFFSET3D(u,1,-1,0)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,-2,0),kadd(KRANC_GFOFFSET3D(u,1,2,0),kadd(KRANC_GFOFFSET3D(u,-2,-1,0),KRANC_GFOFFSET3D(u,2,1,0)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,2,0),kadd(KRANC_GFOFFSET3D(u,1,-2,0),kadd(KRANC_GFOFFSET3D(u,-2,1,0),KRANC_GFOFFSET3D(u,2,-1,0)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,-1,0),KRANC_GFOFFSET3D(u,1,1,0)),ToReal(64))),KRANC_GFOFFSET3D(u,2,-2,0)),KRANC_GFOFFSET3D(u,-2,2,0))))))))
+#else
+#  define PDstandardNth12(u) (PDstandardNth12_impl(u,p1o144dxdy,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth12_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth12_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o144dxdy,kadd(KRANC_GFOFFSET3D(u,-2,-2,0),kadd(KRANC_GFOFFSET3D(u,2,2,0),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,1,0),KRANC_GFOFFSET3D(u,1,-1,0)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,-2,0),kadd(KRANC_GFOFFSET3D(u,1,2,0),kadd(KRANC_GFOFFSET3D(u,-2,-1,0),KRANC_GFOFFSET3D(u,2,1,0)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,2,0),kadd(KRANC_GFOFFSET3D(u,1,-2,0),kadd(KRANC_GFOFFSET3D(u,-2,1,0),KRANC_GFOFFSET3D(u,2,-1,0)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,-1,0),KRANC_GFOFFSET3D(u,1,1,0)),ToReal(64))),KRANC_GFOFFSET3D(u,2,-2,0)),KRANC_GFOFFSET3D(u,-2,2,0)))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth13(u) (kmul(p1o144dxdz,kadd(KRANC_GFOFFSET3D(u,-2,0,-2),kadd(KRANC_GFOFFSET3D(u,2,0,2),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,1),KRANC_GFOFFSET3D(u,1,0,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,-2),kadd(KRANC_GFOFFSET3D(u,1,0,2),kadd(KRANC_GFOFFSET3D(u,-2,0,-1),KRANC_GFOFFSET3D(u,2,0,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,2),kadd(KRANC_GFOFFSET3D(u,1,0,-2),kadd(KRANC_GFOFFSET3D(u,-2,0,1),KRANC_GFOFFSET3D(u,2,0,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,0,-1),KRANC_GFOFFSET3D(u,1,0,1)),ToReal(64))),KRANC_GFOFFSET3D(u,2,0,-2)),KRANC_GFOFFSET3D(u,-2,0,2))))))))
+#else
+#  define PDstandardNth13(u) (PDstandardNth13_impl(u,p1o144dxdz,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth13_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth13_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o144dxdz,kadd(KRANC_GFOFFSET3D(u,-2,0,-2),kadd(KRANC_GFOFFSET3D(u,2,0,2),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,1),KRANC_GFOFFSET3D(u,1,0,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,-2),kadd(KRANC_GFOFFSET3D(u,1,0,2),kadd(KRANC_GFOFFSET3D(u,-2,0,-1),KRANC_GFOFFSET3D(u,2,0,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,2),kadd(KRANC_GFOFFSET3D(u,1,0,-2),kadd(KRANC_GFOFFSET3D(u,-2,0,1),KRANC_GFOFFSET3D(u,2,0,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,0,-1),KRANC_GFOFFSET3D(u,1,0,1)),ToReal(64))),KRANC_GFOFFSET3D(u,2,0,-2)),KRANC_GFOFFSET3D(u,-2,0,2)))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth21(u) (kmul(p1o144dxdy,kadd(KRANC_GFOFFSET3D(u,-2,-2,0),kadd(KRANC_GFOFFSET3D(u,2,2,0),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,1,0),KRANC_GFOFFSET3D(u,1,-1,0)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,-2,0),kadd(KRANC_GFOFFSET3D(u,1,2,0),kadd(KRANC_GFOFFSET3D(u,-2,-1,0),KRANC_GFOFFSET3D(u,2,1,0)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,2,0),kadd(KRANC_GFOFFSET3D(u,1,-2,0),kadd(KRANC_GFOFFSET3D(u,-2,1,0),KRANC_GFOFFSET3D(u,2,-1,0)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,-1,0),KRANC_GFOFFSET3D(u,1,1,0)),ToReal(64))),KRANC_GFOFFSET3D(u,2,-2,0)),KRANC_GFOFFSET3D(u,-2,2,0))))))))
+#else
+#  define PDstandardNth21(u) (PDstandardNth21_impl(u,p1o144dxdy,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth21_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth21_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o144dxdy,kadd(KRANC_GFOFFSET3D(u,-2,-2,0),kadd(KRANC_GFOFFSET3D(u,2,2,0),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,1,0),KRANC_GFOFFSET3D(u,1,-1,0)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,-2,0),kadd(KRANC_GFOFFSET3D(u,1,2,0),kadd(KRANC_GFOFFSET3D(u,-2,-1,0),KRANC_GFOFFSET3D(u,2,1,0)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,2,0),kadd(KRANC_GFOFFSET3D(u,1,-2,0),kadd(KRANC_GFOFFSET3D(u,-2,1,0),KRANC_GFOFFSET3D(u,2,-1,0)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,-1,0),KRANC_GFOFFSET3D(u,1,1,0)),ToReal(64))),KRANC_GFOFFSET3D(u,2,-2,0)),KRANC_GFOFFSET3D(u,-2,2,0)))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth23(u) (kmul(p1o144dydz,kadd(KRANC_GFOFFSET3D(u,0,-2,-2),kadd(KRANC_GFOFFSET3D(u,0,2,2),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,1),KRANC_GFOFFSET3D(u,0,1,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,-2),kadd(KRANC_GFOFFSET3D(u,0,1,2),kadd(KRANC_GFOFFSET3D(u,0,-2,-1),KRANC_GFOFFSET3D(u,0,2,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,2),kadd(KRANC_GFOFFSET3D(u,0,1,-2),kadd(KRANC_GFOFFSET3D(u,0,-2,1),KRANC_GFOFFSET3D(u,0,2,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,0,-1,-1),KRANC_GFOFFSET3D(u,0,1,1)),ToReal(64))),KRANC_GFOFFSET3D(u,0,2,-2)),KRANC_GFOFFSET3D(u,0,-2,2))))))))
+#else
+#  define PDstandardNth23(u) (PDstandardNth23_impl(u,p1o144dydz,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth23_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth23_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o144dydz,kadd(KRANC_GFOFFSET3D(u,0,-2,-2),kadd(KRANC_GFOFFSET3D(u,0,2,2),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,1),KRANC_GFOFFSET3D(u,0,1,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,-2),kadd(KRANC_GFOFFSET3D(u,0,1,2),kadd(KRANC_GFOFFSET3D(u,0,-2,-1),KRANC_GFOFFSET3D(u,0,2,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,2),kadd(KRANC_GFOFFSET3D(u,0,1,-2),kadd(KRANC_GFOFFSET3D(u,0,-2,1),KRANC_GFOFFSET3D(u,0,2,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,0,-1,-1),KRANC_GFOFFSET3D(u,0,1,1)),ToReal(64))),KRANC_GFOFFSET3D(u,0,2,-2)),KRANC_GFOFFSET3D(u,0,-2,2)))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth31(u) (kmul(p1o144dxdz,kadd(KRANC_GFOFFSET3D(u,-2,0,-2),kadd(KRANC_GFOFFSET3D(u,2,0,2),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,1),KRANC_GFOFFSET3D(u,1,0,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,-2),kadd(KRANC_GFOFFSET3D(u,1,0,2),kadd(KRANC_GFOFFSET3D(u,-2,0,-1),KRANC_GFOFFSET3D(u,2,0,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,2),kadd(KRANC_GFOFFSET3D(u,1,0,-2),kadd(KRANC_GFOFFSET3D(u,-2,0,1),KRANC_GFOFFSET3D(u,2,0,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,0,-1),KRANC_GFOFFSET3D(u,1,0,1)),ToReal(64))),KRANC_GFOFFSET3D(u,2,0,-2)),KRANC_GFOFFSET3D(u,-2,0,2))))))))
+#else
+#  define PDstandardNth31(u) (PDstandardNth31_impl(u,p1o144dxdz,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth31_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth31_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o144dxdz,kadd(KRANC_GFOFFSET3D(u,-2,0,-2),kadd(KRANC_GFOFFSET3D(u,2,0,2),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,1),KRANC_GFOFFSET3D(u,1,0,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,-2),kadd(KRANC_GFOFFSET3D(u,1,0,2),kadd(KRANC_GFOFFSET3D(u,-2,0,-1),KRANC_GFOFFSET3D(u,2,0,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,-1,0,2),kadd(KRANC_GFOFFSET3D(u,1,0,-2),kadd(KRANC_GFOFFSET3D(u,-2,0,1),KRANC_GFOFFSET3D(u,2,0,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,-1,0,-1),KRANC_GFOFFSET3D(u,1,0,1)),ToReal(64))),KRANC_GFOFFSET3D(u,2,0,-2)),KRANC_GFOFFSET3D(u,-2,0,2)))))));
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardNth32(u) (kmul(p1o144dydz,kadd(KRANC_GFOFFSET3D(u,0,-2,-2),kadd(KRANC_GFOFFSET3D(u,0,2,2),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,1),KRANC_GFOFFSET3D(u,0,1,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,-2),kadd(KRANC_GFOFFSET3D(u,0,1,2),kadd(KRANC_GFOFFSET3D(u,0,-2,-1),KRANC_GFOFFSET3D(u,0,2,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,2),kadd(KRANC_GFOFFSET3D(u,0,1,-2),kadd(KRANC_GFOFFSET3D(u,0,-2,1),KRANC_GFOFFSET3D(u,0,2,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,0,-1,-1),KRANC_GFOFFSET3D(u,0,1,1)),ToReal(64))),KRANC_GFOFFSET3D(u,0,2,-2)),KRANC_GFOFFSET3D(u,0,-2,2))))))))
+#else
+#  define PDstandardNth32(u) (PDstandardNth32_impl(u,p1o144dydz,cdj,cdk))
+static CCTK_REAL_VEC PDstandardNth32_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL_VEC PDstandardNth32_impl(CCTK_REAL const* restrict const u, CCTK_REAL_VEC const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return kmul(p1o144dydz,kadd(KRANC_GFOFFSET3D(u,0,-2,-2),kadd(KRANC_GFOFFSET3D(u,0,2,2),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,1),KRANC_GFOFFSET3D(u,0,1,-1)),ToReal(-64),kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,-2),kadd(KRANC_GFOFFSET3D(u,0,1,2),kadd(KRANC_GFOFFSET3D(u,0,-2,-1),KRANC_GFOFFSET3D(u,0,2,1)))),ToReal(-8),ksub(ksub(kmadd(kadd(KRANC_GFOFFSET3D(u,0,-1,2),kadd(KRANC_GFOFFSET3D(u,0,1,-2),kadd(KRANC_GFOFFSET3D(u,0,-2,1),KRANC_GFOFFSET3D(u,0,2,-1)))),ToReal(8),kmul(kadd(KRANC_GFOFFSET3D(u,0,-1,-1),KRANC_GFOFFSET3D(u,0,1,1)),ToReal(64))),KRANC_GFOFFSET3D(u,0,2,-2)),KRANC_GFOFFSET3D(u,0,-2,2)))))));
+}
+#endif
+
diff --git a/ML_WaveToy/src/RegisterMoL.cc b/ML_WaveToy/src/RegisterMoL.cc
new file mode 100644
index 0000000..8881277
--- /dev/null
+++ b/ML_WaveToy/src/RegisterMoL.cc
@@ -0,0 +1,20 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+extern "C" void ML_WaveToy_RegisterVars(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  
+  /* Register all the evolved grid functions with MoL */
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("ML_WaveToy::rho"),  CCTK_VarIndex("ML_WaveToy::rhorhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("ML_WaveToy::u"),  CCTK_VarIndex("ML_WaveToy::urhs"));
+  
+  /* Register all the evolved Array functions with MoL */
+  return;
+}
diff --git a/ML_WaveToy/src/RegisterSymmetries.cc b/ML_WaveToy/src/RegisterSymmetries.cc
new file mode 100644
index 0000000..3c24883
--- /dev/null
+++ b/ML_WaveToy/src/RegisterSymmetries.cc
@@ -0,0 +1,34 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "Symmetry.h"
+
+extern "C" void ML_WaveToy_RegisterSymmetries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* array holding symmetry definitions */
+  CCTK_INT sym[3];
+  
+  
+  /* Register symmetries of grid functions */
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToy::rho");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToy::u");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToy::eps");
+  
+}
diff --git a/ML_WaveToy/src/Startup.cc b/ML_WaveToy/src/Startup.cc
new file mode 100644
index 0000000..5f3d2bd
--- /dev/null
+++ b/ML_WaveToy/src/Startup.cc
@@ -0,0 +1,10 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+
+extern "C" int ML_WaveToy_Startup(void)
+{
+  const char * banner = "ML_WaveToy";
+  CCTK_RegisterBanner(banner);
+  return 0;
+}
diff --git a/ML_WaveToy/src/WT_Dirichlet.cc b/ML_WaveToy/src/WT_Dirichlet.cc
new file mode 100644
index 0000000..daf0a6a
--- /dev/null
+++ b/ML_WaveToy/src/WT_Dirichlet.cc
@@ -0,0 +1,150 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+#include "vectors.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) (kdiv(ToReal(1.0),x))
+#define SQR(x) (kmul(x,x))
+#define CUB(x) (kmul(x,SQR(x)))
+
+extern "C" void WT_Dirichlet_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "ML_WaveToy::WT_rhorhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for ML_WaveToy::WT_rhorhs.");
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "ML_WaveToy::WT_urhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for ML_WaveToy::WT_urhs.");
+  return;
+}
+
+static void WT_Dirichlet_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL_VEC const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL_VEC const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL_VEC const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL_VEC const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL_VEC const t = ToReal(cctk_time);
+  CCTK_REAL_VEC const dxi = INV(dx);
+  CCTK_REAL_VEC const dyi = INV(dy);
+  CCTK_REAL_VEC const dzi = INV(dz);
+  CCTK_REAL_VEC const khalf = ToReal(0.5);
+  CCTK_REAL_VEC const kthird = ToReal(1.0/3.0);
+  CCTK_REAL_VEC const ktwothird = ToReal(2.0/3.0);
+  CCTK_REAL_VEC const kfourthird = ToReal(4.0/3.0);
+  CCTK_REAL_VEC const keightthird = ToReal(8.0/3.0);
+  CCTK_REAL_VEC const hdxi = kmul(ToReal(0.5), dxi);
+  CCTK_REAL_VEC const hdyi = kmul(ToReal(0.5), dyi);
+  CCTK_REAL_VEC const hdzi = kmul(ToReal(0.5), dzi);
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL_VEC const p1o12dx = kmul(INV(dx),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dy = kmul(INV(dy),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dz = kmul(INV(dz),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o144dxdy = kmul(INV(kmul(dx,dy)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dxdz = kmul(INV(kmul(dx,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dydz = kmul(INV(kmul(dy,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const pm1o12dx2 = kmul(INV(SQR(dx)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dy2 = kmul(INV(SQR(dy)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dz2 = kmul(INV(SQR(dz)),ToReal(-0.0833333333333333333333333333333));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3VEC(WT_Dirichlet,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2],
+    CCTK_REAL_VEC_SIZE)
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL_VEC urhsL = ToReal(0);
+    
+    CCTK_REAL_VEC rhorhsL = ToReal(0);
+    
+    /* Copy local copies back to grid functions */
+    vec_store_partial_prepare(i,lc_imin,lc_imax);
+    vec_store_nta_partial(rhorhs[index],rhorhsL);
+    vec_store_nta_partial(urhs[index],urhsL);
+  }
+  LC_ENDLOOP3VEC(WT_Dirichlet);
+}
+
+extern "C" void WT_Dirichlet(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WT_Dirichlet_Body");
+  }
+  
+  if (cctk_iteration % WT_Dirichlet_calc_every != WT_Dirichlet_calc_offset)
+  {
+    return;
+  }
+  
+  const char *const groups[] = {
+    "ML_WaveToy::WT_rhorhs",
+    "ML_WaveToy::WT_urhs"};
+  GenericFD_AssertGroupStorage(cctkGH, "WT_Dirichlet", 2, groups);
+  
+  
+  GenericFD_LoopOverBoundary(cctkGH, WT_Dirichlet_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving WT_Dirichlet_Body");
+  }
+}
diff --git a/ML_WaveToy/src/WT_Energy.cc b/ML_WaveToy/src/WT_Energy.cc
new file mode 100644
index 0000000..ba36b94
--- /dev/null
+++ b/ML_WaveToy/src/WT_Energy.cc
@@ -0,0 +1,152 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+#include "vectors.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) (kdiv(ToReal(1.0),x))
+#define SQR(x) (kmul(x,x))
+#define CUB(x) (kmul(x,SQR(x)))
+
+extern "C" void WT_Energy_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "ML_WaveToy::WT_eps","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for ML_WaveToy::WT_eps.");
+  return;
+}
+
+static void WT_Energy_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL_VEC const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL_VEC const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL_VEC const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL_VEC const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL_VEC const t = ToReal(cctk_time);
+  CCTK_REAL_VEC const dxi = INV(dx);
+  CCTK_REAL_VEC const dyi = INV(dy);
+  CCTK_REAL_VEC const dzi = INV(dz);
+  CCTK_REAL_VEC const khalf = ToReal(0.5);
+  CCTK_REAL_VEC const kthird = ToReal(1.0/3.0);
+  CCTK_REAL_VEC const ktwothird = ToReal(2.0/3.0);
+  CCTK_REAL_VEC const kfourthird = ToReal(4.0/3.0);
+  CCTK_REAL_VEC const keightthird = ToReal(8.0/3.0);
+  CCTK_REAL_VEC const hdxi = kmul(ToReal(0.5), dxi);
+  CCTK_REAL_VEC const hdyi = kmul(ToReal(0.5), dyi);
+  CCTK_REAL_VEC const hdzi = kmul(ToReal(0.5), dzi);
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL_VEC const p1o12dx = kmul(INV(dx),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dy = kmul(INV(dy),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dz = kmul(INV(dz),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o144dxdy = kmul(INV(kmul(dx,dy)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dxdz = kmul(INV(kmul(dx,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dydz = kmul(INV(kmul(dy,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const pm1o12dx2 = kmul(INV(SQR(dx)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dy2 = kmul(INV(SQR(dy)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dz2 = kmul(INV(SQR(dz)),ToReal(-0.0833333333333333333333333333333));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3VEC(WT_Energy,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2],
+    CCTK_REAL_VEC_SIZE)
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL_VEC rhoL = vec_load(rho[index]);
+    CCTK_REAL_VEC uL = vec_load(u[index]);
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    CCTK_REAL_VEC const PDstandardNth1u = PDstandardNth1(&u[index]);
+    CCTK_REAL_VEC const PDstandardNth2u = PDstandardNth2(&u[index]);
+    CCTK_REAL_VEC const PDstandardNth3u = PDstandardNth3(&u[index]);
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL_VEC epsL = 
+      kmul(kadd(SQR(rhoL),kadd(SQR(PDstandardNth1u),kadd(SQR(PDstandardNth2u),SQR(PDstandardNth3u)))),ToReal(0.5));
+    
+    /* Copy local copies back to grid functions */
+    vec_store_partial_prepare(i,lc_imin,lc_imax);
+    vec_store_nta_partial(eps[index],epsL);
+  }
+  LC_ENDLOOP3VEC(WT_Energy);
+}
+
+extern "C" void WT_Energy(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WT_Energy_Body");
+  }
+  
+  if (cctk_iteration % WT_Energy_calc_every != WT_Energy_calc_offset)
+  {
+    return;
+  }
+  
+  const char *const groups[] = {
+    "ML_WaveToy::WT_eps",
+    "ML_WaveToy::WT_rho",
+    "ML_WaveToy::WT_u"};
+  GenericFD_AssertGroupStorage(cctkGH, "WT_Energy", 3, groups);
+  
+  GenericFD_EnsureStencilFits(cctkGH, "WT_Energy", 2, 2, 2);
+  
+  GenericFD_LoopOverInterior(cctkGH, WT_Energy_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving WT_Energy_Body");
+  }
+}
diff --git a/ML_WaveToy/src/WT_EnergyBoundary.cc b/ML_WaveToy/src/WT_EnergyBoundary.cc
new file mode 100644
index 0000000..be8978d
--- /dev/null
+++ b/ML_WaveToy/src/WT_EnergyBoundary.cc
@@ -0,0 +1,143 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+#include "vectors.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) (kdiv(ToReal(1.0),x))
+#define SQR(x) (kmul(x,x))
+#define CUB(x) (kmul(x,SQR(x)))
+
+extern "C" void WT_EnergyBoundary_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "ML_WaveToy::WT_eps","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for ML_WaveToy::WT_eps.");
+  return;
+}
+
+static void WT_EnergyBoundary_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL_VEC const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL_VEC const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL_VEC const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL_VEC const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL_VEC const t = ToReal(cctk_time);
+  CCTK_REAL_VEC const dxi = INV(dx);
+  CCTK_REAL_VEC const dyi = INV(dy);
+  CCTK_REAL_VEC const dzi = INV(dz);
+  CCTK_REAL_VEC const khalf = ToReal(0.5);
+  CCTK_REAL_VEC const kthird = ToReal(1.0/3.0);
+  CCTK_REAL_VEC const ktwothird = ToReal(2.0/3.0);
+  CCTK_REAL_VEC const kfourthird = ToReal(4.0/3.0);
+  CCTK_REAL_VEC const keightthird = ToReal(8.0/3.0);
+  CCTK_REAL_VEC const hdxi = kmul(ToReal(0.5), dxi);
+  CCTK_REAL_VEC const hdyi = kmul(ToReal(0.5), dyi);
+  CCTK_REAL_VEC const hdzi = kmul(ToReal(0.5), dzi);
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL_VEC const p1o12dx = kmul(INV(dx),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dy = kmul(INV(dy),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dz = kmul(INV(dz),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o144dxdy = kmul(INV(kmul(dx,dy)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dxdz = kmul(INV(kmul(dx,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dydz = kmul(INV(kmul(dy,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const pm1o12dx2 = kmul(INV(SQR(dx)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dy2 = kmul(INV(SQR(dy)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dz2 = kmul(INV(SQR(dz)),ToReal(-0.0833333333333333333333333333333));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3VEC(WT_EnergyBoundary,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2],
+    CCTK_REAL_VEC_SIZE)
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL_VEC epsL = ToReal(0);
+    
+    /* Copy local copies back to grid functions */
+    vec_store_partial_prepare(i,lc_imin,lc_imax);
+    vec_store_nta_partial(eps[index],epsL);
+  }
+  LC_ENDLOOP3VEC(WT_EnergyBoundary);
+}
+
+extern "C" void WT_EnergyBoundary(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WT_EnergyBoundary_Body");
+  }
+  
+  if (cctk_iteration % WT_EnergyBoundary_calc_every != WT_EnergyBoundary_calc_offset)
+  {
+    return;
+  }
+  
+  const char *const groups[] = {
+    "ML_WaveToy::WT_eps"};
+  GenericFD_AssertGroupStorage(cctkGH, "WT_EnergyBoundary", 1, groups);
+  
+  
+  GenericFD_LoopOverBoundary(cctkGH, WT_EnergyBoundary_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving WT_EnergyBoundary_Body");
+  }
+}
diff --git a/ML_WaveToy/src/WT_Gaussian.cc b/ML_WaveToy/src/WT_Gaussian.cc
new file mode 100644
index 0000000..cde55be
--- /dev/null
+++ b/ML_WaveToy/src/WT_Gaussian.cc
@@ -0,0 +1,138 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+#include "vectors.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) (kdiv(ToReal(1.0),x))
+#define SQR(x) (kmul(x,x))
+#define CUB(x) (kmul(x,SQR(x)))
+
+static void WT_Gaussian_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL_VEC const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL_VEC const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL_VEC const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL_VEC const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL_VEC const t = ToReal(cctk_time);
+  CCTK_REAL_VEC const dxi = INV(dx);
+  CCTK_REAL_VEC const dyi = INV(dy);
+  CCTK_REAL_VEC const dzi = INV(dz);
+  CCTK_REAL_VEC const khalf = ToReal(0.5);
+  CCTK_REAL_VEC const kthird = ToReal(1.0/3.0);
+  CCTK_REAL_VEC const ktwothird = ToReal(2.0/3.0);
+  CCTK_REAL_VEC const kfourthird = ToReal(4.0/3.0);
+  CCTK_REAL_VEC const keightthird = ToReal(8.0/3.0);
+  CCTK_REAL_VEC const hdxi = kmul(ToReal(0.5), dxi);
+  CCTK_REAL_VEC const hdyi = kmul(ToReal(0.5), dyi);
+  CCTK_REAL_VEC const hdzi = kmul(ToReal(0.5), dzi);
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL_VEC const p1o12dx = kmul(INV(dx),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dy = kmul(INV(dy),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dz = kmul(INV(dz),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o144dxdy = kmul(INV(kmul(dx,dy)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dxdz = kmul(INV(kmul(dx,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dydz = kmul(INV(kmul(dy,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const pm1o12dx2 = kmul(INV(SQR(dx)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dy2 = kmul(INV(SQR(dy)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dz2 = kmul(INV(SQR(dz)),ToReal(-0.0833333333333333333333333333333));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3VEC(WT_Gaussian,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2],
+    CCTK_REAL_VEC_SIZE)
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL_VEC rL = vec_load(r[index]);
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL_VEC uL = 
+      kmul(kexp(kmul(INV(SQR(ToReal(width))),kmul(SQR(rL),ToReal(-0.5)))),ToReal(amplitude));
+    
+    CCTK_REAL_VEC rhoL = ToReal(0);
+    
+    /* Copy local copies back to grid functions */
+    vec_store_partial_prepare(i,lc_imin,lc_imax);
+    vec_store_nta_partial(rho[index],rhoL);
+    vec_store_nta_partial(u[index],uL);
+  }
+  LC_ENDLOOP3VEC(WT_Gaussian);
+}
+
+extern "C" void WT_Gaussian(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WT_Gaussian_Body");
+  }
+  
+  if (cctk_iteration % WT_Gaussian_calc_every != WT_Gaussian_calc_offset)
+  {
+    return;
+  }
+  
+  const char *const groups[] = {
+    "grid::coordinates",
+    "ML_WaveToy::WT_rho",
+    "ML_WaveToy::WT_u"};
+  GenericFD_AssertGroupStorage(cctkGH, "WT_Gaussian", 3, groups);
+  
+  
+  GenericFD_LoopOverEverything(cctkGH, WT_Gaussian_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving WT_Gaussian_Body");
+  }
+}
diff --git a/ML_WaveToy/src/WT_RHS.cc b/ML_WaveToy/src/WT_RHS.cc
new file mode 100644
index 0000000..42c14a8
--- /dev/null
+++ b/ML_WaveToy/src/WT_RHS.cc
@@ -0,0 +1,159 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+#include "vectors.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) (kdiv(ToReal(1.0),x))
+#define SQR(x) (kmul(x,x))
+#define CUB(x) (kmul(x,SQR(x)))
+
+extern "C" void WT_RHS_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "ML_WaveToy::WT_rhorhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for ML_WaveToy::WT_rhorhs.");
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "ML_WaveToy::WT_urhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for ML_WaveToy::WT_urhs.");
+  return;
+}
+
+static void WT_RHS_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL_VEC const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL_VEC const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL_VEC const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL_VEC const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL_VEC const t = ToReal(cctk_time);
+  CCTK_REAL_VEC const dxi = INV(dx);
+  CCTK_REAL_VEC const dyi = INV(dy);
+  CCTK_REAL_VEC const dzi = INV(dz);
+  CCTK_REAL_VEC const khalf = ToReal(0.5);
+  CCTK_REAL_VEC const kthird = ToReal(1.0/3.0);
+  CCTK_REAL_VEC const ktwothird = ToReal(2.0/3.0);
+  CCTK_REAL_VEC const kfourthird = ToReal(4.0/3.0);
+  CCTK_REAL_VEC const keightthird = ToReal(8.0/3.0);
+  CCTK_REAL_VEC const hdxi = kmul(ToReal(0.5), dxi);
+  CCTK_REAL_VEC const hdyi = kmul(ToReal(0.5), dyi);
+  CCTK_REAL_VEC const hdzi = kmul(ToReal(0.5), dzi);
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL_VEC const p1o12dx = kmul(INV(dx),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dy = kmul(INV(dy),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dz = kmul(INV(dz),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o144dxdy = kmul(INV(kmul(dx,dy)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dxdz = kmul(INV(kmul(dx,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dydz = kmul(INV(kmul(dy,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const pm1o12dx2 = kmul(INV(SQR(dx)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dy2 = kmul(INV(SQR(dy)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dz2 = kmul(INV(SQR(dz)),ToReal(-0.0833333333333333333333333333333));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3VEC(WT_RHS,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2],
+    CCTK_REAL_VEC_SIZE)
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL_VEC rhoL = vec_load(rho[index]);
+    CCTK_REAL_VEC uL = vec_load(u[index]);
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    CCTK_REAL_VEC const PDstandardNth11u = PDstandardNth11(&u[index]);
+    CCTK_REAL_VEC const PDstandardNth22u = PDstandardNth22(&u[index]);
+    CCTK_REAL_VEC const PDstandardNth33u = PDstandardNth33(&u[index]);
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL_VEC urhsL = rhoL;
+    
+    CCTK_REAL_VEC rhorhsL = 
+      kadd(PDstandardNth11u,kadd(PDstandardNth22u,PDstandardNth33u));
+    
+    /* Copy local copies back to grid functions */
+    vec_store_partial_prepare(i,lc_imin,lc_imax);
+    vec_store_nta_partial(rhorhs[index],rhorhsL);
+    vec_store_nta_partial(urhs[index],urhsL);
+  }
+  LC_ENDLOOP3VEC(WT_RHS);
+}
+
+extern "C" void WT_RHS(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WT_RHS_Body");
+  }
+  
+  if (cctk_iteration % WT_RHS_calc_every != WT_RHS_calc_offset)
+  {
+    return;
+  }
+  
+  const char *const groups[] = {
+    "ML_WaveToy::WT_rho",
+    "ML_WaveToy::WT_rhorhs",
+    "ML_WaveToy::WT_u",
+    "ML_WaveToy::WT_urhs"};
+  GenericFD_AssertGroupStorage(cctkGH, "WT_RHS", 4, groups);
+  
+  GenericFD_EnsureStencilFits(cctkGH, "WT_RHS", 2, 2, 2);
+  
+  GenericFD_LoopOverInterior(cctkGH, WT_RHS_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving WT_RHS_Body");
+  }
+}
diff --git a/ML_WaveToy/src/WT_Standing.cc b/ML_WaveToy/src/WT_Standing.cc
new file mode 100644
index 0000000..8a67e52
--- /dev/null
+++ b/ML_WaveToy/src/WT_Standing.cc
@@ -0,0 +1,145 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+#include "vectors.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) (kdiv(ToReal(1.0),x))
+#define SQR(x) (kmul(x,x))
+#define CUB(x) (kmul(x,SQR(x)))
+
+static void WT_Standing_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL_VEC const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL_VEC const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL_VEC const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL_VEC const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL_VEC const t = ToReal(cctk_time);
+  CCTK_REAL_VEC const dxi = INV(dx);
+  CCTK_REAL_VEC const dyi = INV(dy);
+  CCTK_REAL_VEC const dzi = INV(dz);
+  CCTK_REAL_VEC const khalf = ToReal(0.5);
+  CCTK_REAL_VEC const kthird = ToReal(1.0/3.0);
+  CCTK_REAL_VEC const ktwothird = ToReal(2.0/3.0);
+  CCTK_REAL_VEC const kfourthird = ToReal(4.0/3.0);
+  CCTK_REAL_VEC const keightthird = ToReal(8.0/3.0);
+  CCTK_REAL_VEC const hdxi = kmul(ToReal(0.5), dxi);
+  CCTK_REAL_VEC const hdyi = kmul(ToReal(0.5), dyi);
+  CCTK_REAL_VEC const hdzi = kmul(ToReal(0.5), dzi);
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL_VEC const p1o12dx = kmul(INV(dx),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dy = kmul(INV(dy),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o12dz = kmul(INV(dz),ToReal(0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const p1o144dxdy = kmul(INV(kmul(dx,dy)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dxdz = kmul(INV(kmul(dx,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const p1o144dydz = kmul(INV(kmul(dy,dz)),ToReal(0.00694444444444444444444444444444));
+  CCTK_REAL_VEC const pm1o12dx2 = kmul(INV(SQR(dx)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dy2 = kmul(INV(SQR(dy)),ToReal(-0.0833333333333333333333333333333));
+  CCTK_REAL_VEC const pm1o12dz2 = kmul(INV(SQR(dz)),ToReal(-0.0833333333333333333333333333333));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3VEC(WT_Standing,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2],
+    CCTK_REAL_VEC_SIZE)
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL_VEC xL = vec_load(x[index]);
+    CCTK_REAL_VEC yL = vec_load(y[index]);
+    CCTK_REAL_VEC zL = vec_load(z[index]);
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL_VEC k = kmul(INV(ToReal(width)),ToReal(Pi));
+    
+    CCTK_REAL_VEC omega = ksqrt(kmul(SQR(k),ToReal(3)));
+    
+    CCTK_REAL_VEC uL = 
+      kmul(kcos(kmul(xL,k)),kmul(kcos(kmul(yL,k)),kmul(kcos(kmul(zL,k)),kmul(kcos(kmul(omega,t)),ToReal(amplitude)))));
+    
+    CCTK_REAL_VEC rhoL = 
+      kneg(kmul(omega,kmul(kcos(kmul(xL,k)),kmul(kcos(kmul(yL,k)),kmul(kcos(kmul(zL,k)),kmul(ksin(kmul(omega,t)),ToReal(amplitude)))))));
+    
+    /* Copy local copies back to grid functions */
+    vec_store_partial_prepare(i,lc_imin,lc_imax);
+    vec_store_nta_partial(rho[index],rhoL);
+    vec_store_nta_partial(u[index],uL);
+  }
+  LC_ENDLOOP3VEC(WT_Standing);
+}
+
+extern "C" void WT_Standing(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WT_Standing_Body");
+  }
+  
+  if (cctk_iteration % WT_Standing_calc_every != WT_Standing_calc_offset)
+  {
+    return;
+  }
+  
+  const char *const groups[] = {
+    "grid::coordinates",
+    "ML_WaveToy::WT_rho",
+    "ML_WaveToy::WT_u"};
+  GenericFD_AssertGroupStorage(cctkGH, "WT_Standing", 3, groups);
+  
+  
+  GenericFD_LoopOverEverything(cctkGH, WT_Standing_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving WT_Standing_Body");
+  }
+}
diff --git a/ML_WaveToy/src/make.code.defn b/ML_WaveToy/src/make.code.defn
new file mode 100644
index 0000000..adee7dd
--- /dev/null
+++ b/ML_WaveToy/src/make.code.defn
@@ -0,0 +1,3 @@
+# File produced by Kranc
+
+SRCS = Startup.cc RegisterSymmetries.cc RegisterMoL.cc WT_Gaussian.cc WT_Standing.cc WT_RHS.cc WT_Dirichlet.cc WT_Energy.cc WT_EnergyBoundary.cc Boundaries.cc