CarpetProlongateTest: Test interpolation as well

Add a routine that interpolates to a grid array, testing whether
interpolation (including time interpolation) works correctly.

Add a test case for 3rd order spatial and 2nd order temporal
interpolation.

17 files changed, 3621 insertions, 21 deletions

diff --git a/CarpetExtra/CarpetProlongateTest/configuration.ccl b/CarpetExtra/CarpetProlongateTest/configuration.ccl
new file mode 100644
index 000000000..ee775ac1b
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/configuration.ccl
@@ -0,0 +1,3 @@
+# Configuration definition for thorn CarpetProlongateTest
+
+REQUIRES Fortran
diff --git a/CarpetExtra/CarpetProlongateTest/interface.ccl b/CarpetExtra/CarpetProlongateTest/interface.ccl
index 366742f08..2a132d121 100644
--- a/CarpetExtra/CarpetProlongateTest/interface.ccl
+++ b/CarpetExtra/CarpetProlongateTest/interface.ccl
@@ -21,4 +21,16 @@ CCTK_REAL difference TYPE=gf TIMELEVELS=3
   u0 du
 } "Error in grid function"
 
+
+
+CCTK_REAL interp_difference TYPE=array DIM=3 SIZE=interp_nx,interp_ny,interp_nz DISTRIB=default
+{
+  interp_x interp_y interp_z
+  interp_u
+  interp_u0 interp_du
+} "Error in interpolated grid array"
+
+
+
 CCTK_REAL errornorm TYPE=scalar "Norm of error in grid function"
+CCTK_REAL interp_errornorm TYPE=scalar "Norm of error in interpolated grid array"
diff --git a/CarpetExtra/CarpetProlongateTest/param.ccl b/CarpetExtra/CarpetProlongateTest/param.ccl
index e2c1c801d..d92f545ba 100644
--- a/CarpetExtra/CarpetProlongateTest/param.ccl
+++ b/CarpetExtra/CarpetProlongateTest/param.ccl
@@ -14,3 +14,59 @@ CCTK_INT power_z "Polynomial power of z coordinate"
 {
   *:* :: ""
 } 0
+
+CCTK_INT power_t "Polynomial power of t coordinate"
+{
+  *:* :: ""
+} 0
+
+
+
+STRING interpolator "The interpolator to use" STEERABLE=always
+{
+  "" :: "must be a registered interpolator"
+} "Lagrange polynomial interpolation"
+
+STRING interpolator_options "Options for the interpolator" STEERABLE=always
+{
+  "" :: "must be a valid options specification"
+} "order=2"
+
+CCTK_INT interp_nx "number of points for interpolated region"
+{
+  0:* :: ""
+} 4
+CCTK_INT interp_ny "number of points for interpolated region"
+{
+  0:* :: ""
+} 4
+CCTK_INT interp_nz "number of points for interpolated region"
+{
+  0:* :: ""
+} 4
+
+CCTK_REAL interp_xmin "xmin for interpolated region"
+{
+  *:* :: ""
+} -0.5
+CCTK_REAL interp_ymin "ymin for interpolated region"
+{
+  *:* :: ""
+} -0.5
+CCTK_REAL interp_zmin "zmin for interpolated region"
+{
+  *:* :: ""
+} -0.5
+
+CCTK_REAL interp_xmax "xmax for interpolated region"
+{
+  *:* :: ""
+} -0.5
+CCTK_REAL interp_ymax "ymax for interpolated region"
+{
+  *:* :: ""
+} -0.5
+CCTK_REAL interp_zmax "zmax for interpolated region"
+{
+  *:* :: ""
+} -0.5
diff --git a/CarpetExtra/CarpetProlongateTest/schedule.ccl b/CarpetExtra/CarpetProlongateTest/schedule.ccl
index 04ac25569..d3b2416e0 100644
--- a/CarpetExtra/CarpetProlongateTest/schedule.ccl
+++ b/CarpetExtra/CarpetProlongateTest/schedule.ccl
@@ -1,6 +1,10 @@
 # Schedule definitions for thorn CarpetProlongateTest
 
-STORAGE: scalar[3] scaled[3] difference[3] errornorm
+STORAGE: scalar[3] scaled[3] difference[3]
+STORAGE: interp_difference
+STORAGE: errornorm interp_errornorm
+
+
 
 SCHEDULE CarpetProlongateTest_Init AT initial
 {
@@ -8,12 +12,40 @@ SCHEDULE CarpetProlongateTest_Init AT initial
   SYNC: scalar scaled
 } "Set up initial data"
 
+SCHEDULE CarpetProlongateTest_Init AT evol
+{
+  LANG: Fortran
+  SYNC: scalar scaled
+} "Set up initial data"
+
 SCHEDULE CarpetProlongateTest_Diff IN MoL_PostStep
 {
   LANG: Fortran
 } "Test data"
 
-SCHEDULE CarpetProlongateTest_NormInit IN MoL_PostStep AFTER CarpetProlongateTest_Diff
+
+
+SCHEDULE CarpetProlongateTest_InterpInit AT initial
+{
+  LANG: Fortran
+  OPTIONS: global-late
+} "Set up interpolation"
+
+SCHEDULE CarpetProlongateTest_Interp IN MoL_PostStep
+{
+  LANG: Fortran
+  OPTIONS: global-late
+} "Interpolate"
+
+SCHEDULE CarpetProlongateTest_InterpDiff IN MoL_PostStep AFTER CarpetProlongateTest_Interp
+{
+  LANG: Fortran
+  OPTIONS: global-late
+} "Test interpolated data"
+
+
+
+SCHEDULE CarpetProlongateTest_NormInit IN MoL_PostStep AFTER (CarpetProlongateTest_Diff CarpetProlongateTest_InterpDiff)
 {
   LANG: Fortran
   OPTIONS: global-late
diff --git a/CarpetExtra/CarpetProlongateTest/src/init.F90 b/CarpetExtra/CarpetProlongateTest/src/init.F90
index 3d12dc3f2..9784dd8e8 100644
--- a/CarpetExtra/CarpetProlongateTest/src/init.F90
+++ b/CarpetExtra/CarpetProlongateTest/src/init.F90
@@ -1,31 +1,45 @@
 #include "cctk.h"
 #include "cctk_Arguments.h"
+#include "cctk_Functions.h"
 #include "cctk_Parameters.h"
 
 
 
-subroutine CarpetProlongateTest_Init (CCTK_ARGUMENTS)
+module CarpetProlongateTest
   implicit none
-  DECLARE_CCTK_ARGUMENTS
-  DECLARE_CCTK_PARAMETERS
   
-  CCTK_INT,  parameter :: izero = 0
-  
-  ! Add +1 to coordinates so that the domain is not symmetric about
-  ! the origin (which may accidendally cancel out some errors)
-  u = 0 + &
-       1 * density(x+1,y+1,z+1, power_x,izero  ,izero  ) + &
-       2 * density(x+1,y+1,z+1, izero  ,power_y,izero  ) + &
-       3 * density(x+1,y+1,z+1, izero  ,izero  ,power_z) + &
-       4 * density(x+1,y+1,z+1, power_x,power_y,izero  ) + &
-       5 * density(x+1,y+1,z+1, power_x,izero  ,power_z) + &
-       6 * density(x+1,y+1,z+1, izero  ,power_y,power_z) + &
-       7 * density(x+1,y+1,z+1, power_x,power_y,power_z)
-  u0 = u
+contains
   
-  uscaled = u * product(cctk_delta_space(:))
+  ! Set the time scaling factor to a sum of powers, ensuring that the
+  ! scaling factor is not zero for t=0. Also, for power_t=0, the
+  ! scaling factor is 1 and has no effect.
+  function density_time_scale (tt) result (tscale)
+    DECLARE_CCTK_PARAMETERS
+    CCTK_REAL, intent(in) :: tt
+    CCTK_REAL :: tscale
+    integer   :: n
+    
+    tscale = 1
+    do n = 1, power_t
+       tscale = tscale + tt ** n
+    end do
+  end function density_time_scale
   
-contains
+  elemental function density_sum (xx, yy, zz) result (res)
+    DECLARE_CCTK_PARAMETERS
+    CCTK_INT, parameter :: izero = 0
+    CCTK_REAL, intent(in) :: xx, yy, zz
+    CCTK_REAL :: res
+    
+    res = 0 + &
+         1 * density(xx,yy,zz, power_x,izero  ,izero  ) + &
+         2 * density(xx,yy,zz, izero  ,power_y,izero  ) + &
+         3 * density(xx,yy,zz, izero  ,izero  ,power_z) + &
+         4 * density(xx,yy,zz, power_x,power_y,izero  ) + &
+         5 * density(xx,yy,zz, power_x,izero  ,power_z) + &
+         6 * density(xx,yy,zz, izero  ,power_y,power_z) + &
+         7 * density(xx,yy,zz, power_x,power_y,power_z)
+  end function density_sum
   
   ! Calculate an integrand that is polynomial in the coordinates
   ! (xx,yy,zz), and which is zero if integrated over [0,2]^3
@@ -50,27 +64,182 @@ contains
     volume = (xmax - xmin) * (ymax - ymin) * (zmax - zmin)
     
     res = xx**px * yy**py * zz**pz - integral / volume
-    
   end function density
   
+end module CarpetProlongateTest
+
+
+
+subroutine CarpetProlongateTest_Init (CCTK_ARGUMENTS)
+  use CarpetProlongateTest
+  implicit none
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  print '("CarpetProlongateTest_Init it=",i0," t=",g0.6, " rl=",i0)', &
+       cctk_iteration, cctk_time, nint(log(dble(cctk_levfac(1)))/log(2.0d0))
+  
+  ! Add +1 to coordinates so that the domain is not symmetric about
+  ! the origin (which may accidendally cancel out some errors)
+  u = density_time_scale(cctk_time) * density_sum(x+1,y+1,z+1)
+  
+  uscaled = u * product(cctk_delta_space(:))
 end subroutine CarpetProlongateTest_Init
 
 
 
 subroutine CarpetProlongateTest_Diff (CCTK_ARGUMENTS)
+  use CarpetProlongateTest
   implicit none
   DECLARE_CCTK_ARGUMENTS
   
+  u0 = density_time_scale(cctk_time) * density_sum(x+1,y+1,z+1)
   du = u - u0
 end subroutine CarpetProlongateTest_Diff
 
 
 
+subroutine CarpetProlongateTest_InterpInit (CCTK_ARGUMENTS)
+  implicit none
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  
+  CCTK_REAL :: dx, dy, dz
+  integer   :: lbnd(3), lsh(3), gsh(3)
+  integer   :: i,j,k
+  integer   :: ierr
+  
+  print '("CarpetProlongateTest_InterpInit it=",i0," t=",g0.6, " rl=",i0)', &
+       cctk_iteration, cctk_time, nint(log(dble(cctk_levfac(1)))/log(2.0d0))
+  
+  call CCTK_GrouplbndGN (ierr, cctkGH, 3, lbnd, "CarpetProlongateTest::interp_difference")
+  if (ierr/=0) call CCTK_WARN (0, "internal error")
+  call CCTK_GrouplshGN  (ierr, cctkGH, 3, lsh , "CarpetProlongateTest::interp_difference")
+  if (ierr/=0) call CCTK_WARN (0, "internal error")
+  call CCTK_GroupgshGN  (ierr, cctkGH, 3, gsh , "CarpetProlongateTest::interp_difference")
+  if (ierr/=0) call CCTK_WARN (0, "internal error")
+  
+  dx = (interp_xmax - interp_xmin) / (gsh(1)-1)
+  dy = (interp_ymax - interp_ymin) / (gsh(2)-1)
+  dz = (interp_zmax - interp_zmin) / (gsh(3)-1)
+  
+  do k=1,lsh(3)
+     do j=1,lsh(2)
+        do i=1,lsh(1)
+           interp_x(i,j,k) = interp_xmin + (lbnd(1)+i-1) * dx
+           interp_y(i,j,k) = interp_ymin + (lbnd(2)+j-1) * dy
+           interp_z(i,j,k) = interp_zmin + (lbnd(3)+k-1) * dz
+        end do
+     end do
+  end do
+end subroutine CarpetProlongateTest_InterpInit
+
+subroutine CarpetProlongateTest_Interp (CCTK_ARGUMENTS)
+  use cctk
+  implicit none
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_FUNCTIONS
+  DECLARE_CCTK_PARAMETERS
+  
+  integer :: lsh(3)
+  
+  integer   :: len_interpolator
+  integer   :: len_interpolator_options
+  character :: fort_interpolator*100
+  character :: fort_interpolator_options*1000
+  integer   :: coord_handle
+  integer   :: interp_handle
+  integer   :: options_table
+  
+  integer      :: coord_type
+  CCTK_POINTER :: coords(3)
+  integer      :: ninputs
+  CCTK_INT     :: inputs(1)
+
+  integer      :: noutputs
+  CCTK_INT     :: output_types(1)
+  CCTK_POINTER :: outputs(1)
+  integer      :: npoints
+  
+  integer :: ierr
+  
+  print '("CarpetProlongateTest_Interp it=",i0," t=",g0.6, " rl=",i0)', &
+       cctk_iteration, cctk_time, nint(log(dble(cctk_levfac(1)))/log(2.0d0))
+  
+  call CCTK_GrouplshGN (ierr, cctkGH, 3, lsh, "CarpetProlongateTest::interp_difference")
+  if (ierr/=0) call CCTK_WARN (0, "internal error")
+  
+  ! Get coordinate system
+  call CCTK_CoordSystemHandle (coord_handle, "cart3d")
+  if (coord_handle<0) then
+     call CCTK_WARN (0, "Could not obtain coordinate system handle")
+  end if
+  
+  ! Get interpolator
+  call CCTK_FortranString &
+       (len_interpolator, interpolator, fort_interpolator)
+  call CCTK_InterpHandle (interp_handle, fort_interpolator)
+  if (interp_handle<0) then
+     call CCTK_WARN (0, "Could not obtain interpolator handle")
+  end if
+  
+  ! Get interpolator options
+  call CCTK_FortranString &
+       (len_interpolator_options, interpolator_options, fort_interpolator_options)
+  call Util_TableCreateFromString (options_table, fort_interpolator_options)
+  if (options_table<0) then
+     call CCTK_WARN (0, "Could not create interpolator option table")
+  end if
+  
+  npoints = product(lsh)
+  
+  coord_type = CCTK_VARIABLE_REAL
+  coords = (/ CCTK_PointerTo(interp_x), CCTK_PointerTo(interp_y), CCTK_PointerTo(interp_z) /)
+  
+  ninputs = 1
+  call CCTK_VarIndex(inputs(1), "CarpetProlongateTest::u")
+  if (any(inputs<0)) then
+     call CCTK_WARN (0, "Could not obtain interpolation variable index")
+  end if
+  
+  noutputs     = 1
+  output_types = (/ CCTK_VARIABLE_REAL /)
+  outputs      = (/ CCTK_PointerTo(interp_u) /)
+  
+  call CCTK_InterpGridArrays &
+       (ierr, cctkGH, 3, &
+       interp_handle, options_table, coord_handle, &
+       npoints, coord_type, coords, &
+       ninputs, inputs, &
+       noutputs, output_types, outputs)
+  
+  if (ierr/=0) then
+     call CCTK_WARN (0, "Interpolator error")
+  end if
+end subroutine CarpetProlongateTest_Interp
+
+subroutine CarpetProlongateTest_InterpDiff (CCTK_ARGUMENTS)
+  use CarpetProlongateTest
+  implicit none
+  DECLARE_CCTK_ARGUMENTS
+  
+  print '("CarpetProlongateTest_InterpDiff it=",i0," t=",g0.6, " rl=",i0)', &
+       cctk_iteration, cctk_time, nint(log(dble(cctk_levfac(1)))/log(2.0d0))
+  
+  interp_u0 = &
+       density_time_scale(cctk_time) * &
+       density_sum(interp_x+1,interp_y+1,interp_z+1)
+  interp_du = interp_u - interp_u0
+end subroutine CarpetProlongateTest_InterpDiff
+
+
+
 subroutine CarpetProlongateTest_NormInit (CCTK_ARGUMENTS)
   implicit none
   DECLARE_CCTK_ARGUMENTS
   
   errornorm = 0
+  interp_errornorm = 0
 end subroutine CarpetProlongateTest_NormInit
 
 subroutine CarpetProlongateTest_NormCalc (CCTK_ARGUMENTS)
@@ -78,6 +247,7 @@ subroutine CarpetProlongateTest_NormCalc (CCTK_ARGUMENTS)
   DECLARE_CCTK_ARGUMENTS
   
   errornorm = max (errornorm, maxval(abs(du)))
+  interp_errornorm = max (interp_errornorm, maxval(abs(interp_du)))
 end subroutine CarpetProlongateTest_NormCalc
 
 subroutine CarpetProlongateTest_NormReduce (CCTK_ARGUMENTS)
@@ -92,10 +262,18 @@ subroutine CarpetProlongateTest_NormReduce (CCTK_ARGUMENTS)
   if (max_handle < 0) then
      call CCTK_WARN (CCTK_WARN_ABORT, "Could not obtain norm handle")
   end if
+  
   call CCTK_ReduceLocScalar &
        (ierr, cctkGH, -1, max_handle, errornorm, tmp, CCTK_VARIABLE_REAL)
   if (ierr/=0) then
      call CCTK_WARN (CCTK_WARN_ABORT, "Could not evaluate norm")
   end if
   errornorm = tmp
+  
+  call CCTK_ReduceLocScalar &
+       (ierr, cctkGH, -1, max_handle, interp_errornorm, tmp, CCTK_VARIABLE_REAL)
+  if (ierr/=0) then
+     call CCTK_WARN (CCTK_WARN_ABORT, "Could not evaluate norm")
+  end if
+  interp_errornorm = tmp
 end subroutine CarpetProlongateTest_NormReduce
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp.par b/CarpetExtra/CarpetProlongateTest/test/test_interp.par
new file mode 100644
index 000000000..06e11e855
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp.par
@@ -0,0 +1,112 @@
+Cactus::cctk_itlast = 512
+
+
+
+ActiveThorns = "IOUtil"
+
+IO::out_dir = $parfile
+
+
+
+ActiveThorns = "AEILocalInterp"
+
+ActiveThorns = "InitBase"
+InitBase::initial_data_setup_method = "init_single_level"
+
+ActiveThorns = "LoopControl"
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetInterp CarpetReduce"
+
+Carpet::domain_from_coordbase = yes
+Carpet::max_refinement_levels = 10
+
+driver::ghost_size       = 2
+Carpet::use_buffer_zones = yes
+
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time  = 2
+
+Carpet::init_each_timelevel = yes
+
+Carpet::poison_new_timelevels = yes
+CarpetLib::poison_new_memory  = yes
+
+
+
+ActiveThorns = "Boundary CartGrid3D CoordBase SymBase"
+
+CoordBase::domainsize = "minmax"
+
+CoordBase::xmin = -1.00
+CoordBase::ymin = -1.00
+CoordBase::zmin = -1.00
+CoordBase::xmax = +1.00
+CoordBase::ymax = +1.00
+CoordBase::zmax = +1.00
+CoordBase::dx   =  0.02
+CoordBase::dy   =  0.02
+CoordBase::dz   =  0.02
+
+CoordBase::boundary_size_x_lower = 2
+CoordBase::boundary_size_y_lower = 2
+CoordBase::boundary_size_z_lower = 2
+CoordBase::boundary_size_x_upper = 2
+CoordBase::boundary_size_y_upper = 2
+CoordBase::boundary_size_z_upper = 2
+
+CartGrid3D::type = "coordbase"
+
+
+
+ActiveThorns = "SphericalSurface"
+
+
+
+ActiveThorns = "CarpetRegrid2 CarpetTracker"
+
+CarpetRegrid2::regrid_every = 0
+CarpetRegrid2::verbose      = yes
+
+CarpetRegrid2::num_centres = 1
+
+CarpetRegrid2::num_levels_1 = 2
+CarpetRegrid2::radius_1[1]  = 0.2
+
+
+
+ActiveThorns = "MoL"
+
+
+
+ActiveThorns = "CarpetProlongateTest"
+
+CarpetProlongateTest::power_x = 3
+CarpetProlongateTest::power_y = 3
+CarpetProlongateTest::power_z = 3
+CarpetProlongateTest::power_t = 2
+
+CarpetProlongateTest::interpolator_options = "order=4"
+
+
+
+ActiveThorns = "CarpetIOASCII"
+
+IOASCII::one_file_per_group = yes
+
+IOASCII::out0D_every = 1
+IOASCII::out0D_vars  = "
+        CarpetProlongateTest::interp_errornorm
+"
+
+IOASCII::out1D_every = 1
+IOASCII::out1D_vars  = "
+        CarpetProlongateTest::scalar
+        CarpetProlongateTest::interp_difference
+"
+
+IOASCII::out3D_every = 1
+IOASCII::out3D_vars  = "
+        CarpetProlongateTest::interp_difference
+"
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.d.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.d.asc
new file mode 100644
index 000000000..f5cc4eeaf
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.d.asc
@@ -0,0 +1,633 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::INTERP_DIFFERENCE d (carpetprolongatetest::interp_difference)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+#
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+# iteration 256
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+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
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+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
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diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.x.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.x.asc
new file mode 100644
index 000000000..57338b69e
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.x.asc
@@ -0,0 +1,36 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::INTERP_DIFFERENCE x (carpetprolongatetest::interp_difference)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+0	0 0 0 0	0 0 0	0	0 0 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	1 0 0	0	1 0 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
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+0	0 0 0 0	3 0 0	0	3 0 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+
+
+# iteration 256
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+256	0 0 0 0	0 0 0	0.5	0 0 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
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+256	0 0 0 0	3 0 0	0.5	3 0 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+512	0 0 0 0	0 0 0	1	0 0 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
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+512	0 0 0 0	3 0 0	1	3 0 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.xyz.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.xyz.asc
new file mode 100644
index 000000000..b2003feb8
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.xyz.asc
@@ -0,0 +1,276 @@
+# 3D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::INTERP_DIFFERENCE x y z (carpetprolongatetest::interp_difference)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
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+
+
+
+
+# iteration 256
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
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+
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+256	0 0 0 0	3 2 1	0.5	3 2 1	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+256	0 0 0 0	0 3 1	0.5	0 3 1	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	1 3 1	0.5	1 3 1	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
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+256	0 0 0 0	3 3 1	0.5	3 3 1	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+
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+
+256	0 0 0 0	0 1 2	0.5	0 1 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	1 1 2	0.5	1 1 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
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+256	0 0 0 0	3 1 2	0.5	3 1 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+256	0 0 0 0	0 2 2	0.5	0 2 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
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+256	0 0 0 0	2 2 2	0.5	2 2 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	3 2 2	0.5	3 2 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+256	0 0 0 0	0 3 2	0.5	0 3 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
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+256	0 0 0 0	2 3 2	0.5	2 3 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	3 3 2	0.5	3 3 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+
+256	0 0 0 0	0 0 3	0.5	0 0 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	1 0 3	0.5	1 0 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	2 0 3	0.5	2 0 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	3 0 3	0.5	3 0 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+256	0 0 0 0	0 1 3	0.5	0 1 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	1 1 3	0.5	1 1 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	2 1 3	0.5	2 1 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	3 1 3	0.5	3 1 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+256	0 0 0 0	0 2 3	0.5	0 2 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	1 2 3	0.5	1 2 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	2 2 3	0.5	2 2 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	3 2 3	0.5	3 2 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+256	0 0 0 0	0 3 3	0.5	0 3 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	1 3 3	0.5	1 3 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	2 3 3	0.5	2 3 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	3 3 3	0.5	3 3 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
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+
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+
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+
+
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+512	0 0 0 0	0 1 3	1	0 1 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
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+512	0 0 0 0	0 2 3	1	0 2 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	1 2 3	1	1 2 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	2 2 3	1	2 2 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	3 2 3	1	3 2 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+
+512	0 0 0 0	0 3 3	1	0 3 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	1 3 3	1	1 3 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	2 3 3	1	2 3 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	3 3 3	1	3 3 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+
+
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.y.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.y.asc
new file mode 100644
index 000000000..e36409006
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.y.asc
@@ -0,0 +1,36 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::INTERP_DIFFERENCE y (carpetprolongatetest::interp_difference)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+0	0 0 0 0	0 0 0	0	0 0 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	0 1 0	0	0 1 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	0 2 0	0	0 2 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	0 3 0	0	0 3 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+
+
+# iteration 256
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+256	0 0 0 0	0 0 0	0.5	0 0 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	0 1 0	0.5	0 1 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	0 2 0	0.5	0 2 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	0 3 0	0.5	0 3 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+512	0 0 0 0	0 0 0	1	0 0 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	0 1 0	1	0 1 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	0 2 0	1	0 2 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	0 3 0	1	0 3 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.z.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.z.asc
new file mode 100644
index 000000000..24228188f
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_difference.z.asc
@@ -0,0 +1,36 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::INTERP_DIFFERENCE z (carpetprolongatetest::interp_difference)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+0	0 0 0 0	0 0 0	0	0 0 0	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	0 0 1	0	0 0 1	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	0 0 2	0	0 0 2	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+0	0 0 0 0	0 0 3	0	0 0 3	-0.5 -0.5 -0.5 -127.001953125 -127.001953125 0
+
+
+# iteration 256
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+256	0 0 0 0	0 0 0	0.5	0 0 0	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	0 0 1	0.5	0 0 1	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	0 0 2	0.5	0 0 2	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+256	0 0 0 0	0 0 3	0.5	0 0 3	-0.5 -0.5 -0.5 -127.250488288701 -127.250488288701 0
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_x 14:interp_y 15:interp_z 16:interp_u 17:interp_u0 18:interp_du
+512	0 0 0 0	0 0 0	1	0 0 0	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	0 0 1	1	0 0 1	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	0 0 2	1	0 0 2	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+512	0 0 0 0	0 0 3	1	0 0 3	-0.5 -0.5 -0.5 -381.005859375 -381.005859375 0
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_errornorm..asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_errornorm..asc
new file mode 100644
index 000000000..91e7a51dc
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::interp_errornorm..asc
@@ -0,0 +1,24 @@
+# 0D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::INTERP_ERRORNORM (carpetprolongatetest::interp_errornorm)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_errornorm
+0	0 0 0 0	0 0 0	0	0 0 0	0
+
+# iteration 256
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_errornorm
+256	0 0 0 0	0 0 0	0.5	0 0 0	0
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:interp_errornorm
+512	0 0 0 0	0 0 0	1	0 0 0	0
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.d.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.d.asc
new file mode 100644
index 000000000..c4162d01c
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.d.asc
@@ -0,0 +1,851 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::SCALAR d (carpetprolongatetest::scalar)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
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+
+# iteration 0
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+# data columns: 13:u
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+512	0 1 0 0	30720 30720 30720	1	0.18 0.18 0.18	-139.800956071742
+512	0 1 0 0	30976 30976 30976	1	0.19 0.19 0.19	-125.383479686741
+512	0 1 0 0	31232 31232 31232	1	0.2 0.2 0.2	-110.171332608
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+512	0 1 0 0	32000 32000 32000	1	0.23 0.23 0.23	-59.356193465792
+512	0 1 0 0	32256 32256 32256	1	0.24 0.24 0.24	-40.5453349726543
+512	0 1 0 0	32512 32512 32512	1	0.25 0.25 0.25	-20.7201805114745
+512	0 1 0 0	32768 32768 32768	1	0.26 0.26 0.26	0.169224176412341
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diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.x.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.x.asc
new file mode 100644
index 000000000..7023aab12
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.x.asc
@@ -0,0 +1,401 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::SCALAR x (carpetprolongatetest::scalar)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+0	0 0 0 0	45056 26112 26112	0	0.74 0 0	-27.443592
+0	0 0 0 0	45568 26112 26112	0	0.76 0 0	-24.319808
+0	0 0 0 0	46080 26112 26112	0	0.78 0 0	-21.124216
+0	0 0 0 0	46592 26112 26112	0	0.8 0 0	-17.856
+0	0 0 0 0	47104 26112 26112	0	0.82 0 0	-14.514344
+0	0 0 0 0	47616 26112 26112	0	0.84 0 0	-11.098432
+0	0 0 0 0	48128 26112 26112	0	0.86 0 0	-7.60744799999999
+0	0 0 0 0	48640 26112 26112	0	0.88 0 0	-4.04057599999997
+0	0 0 0 0	49152 26112 26112	0	0.9 0 0	-0.397000000000017
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+0	0 0 0 0	50176 26112 26112	0	0.94 0 0	7.12352799999999
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+0	0 0 0 0	51712 26112 26112	0	1 0 0	19
+0	0 0 0 0	52224 26112 26112	0	1.02 0 0	23.120936
+
+
+# iteration 0
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+0	0 1 0 0	30976 26112 26112	0	0.19 0 0	-88.352297
+0	0 1 0 0	31232 26112 26112	0	0.2 0 0	-87.624
+0	0 1 0 0	31488 26112 26112	0	0.21 0 0	-86.883463
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+0	0 1 0 0	32000 26112 26112	0	0.23 0 0	-85.365261
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+0	0 1 0 0	32768 26112 26112	0	0.26 0 0	-82.993608
+
+
+# iteration 256
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+256	0 1 0 0	20992 26112 26112	0.5	-0.2 0 0	-189.518
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+256	0 1 0 0	30208 26112 26112	0.5	0.16 0 0	-158.313344
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+256	0 1 0 0	30720 26112 26112	0.5	0.18 0 0	-155.869798
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+256	0 1 0 0	31232 26112 26112	0.5	0.2 0 0	-153.342
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+256	0 1 0 0	31744 26112 26112	0.5	0.22 0 0	-150.728522
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+256	0 1 0 0	32256 26112 26112	0.5	0.24 0 0	-148.027936
+256	0 1 0 0	32512 26112 26112	0.5	0.25 0 0	-146.64453125
+256	0 1 0 0	32768 26112 26112	0.5	0.26 0 0	-145.238814
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
+512	0 0 0 0	0 26112 26112	1	-1.02 0 0	-351.000408
+512	0 0 0 0	512 26112 26112	1	-1 0 0	-351
+512	0 0 0 0	1024 26112 26112	1	-0.98 0 0	-350.999592
+512	0 0 0 0	1536 26112 26112	1	-0.96 0 0	-350.996736
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+512	0 0 0 0	2560 26112 26112	1	-0.92 0 0	-350.973888
+512	0 0 0 0	3072 26112 26112	1	-0.9 0 0	-350.949
+512	0 0 0 0	3584 26112 26112	1	-0.88 0 0	-350.911872
+512	0 0 0 0	4096 26112 26112	1	-0.86 0 0	-350.860056
+512	0 0 0 0	4608 26112 26112	1	-0.84 0 0	-350.791104
+512	0 0 0 0	5120 26112 26112	1	-0.82 0 0	-350.702568
+512	0 0 0 0	5632 26112 26112	1	-0.8 0 0	-350.592
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+512	0 0 0 0	9216 26112 26112	1	-0.66 0 0	-348.995496
+512	0 0 0 0	9728 26112 26112	1	-0.64 0 0	-348.620544
+512	0 0 0 0	10240 26112 26112	1	-0.62 0 0	-348.201528
+512	0 0 0 0	10752 26112 26112	1	-0.6 0 0	-347.736
+512	0 0 0 0	11264 26112 26112	1	-0.58 0 0	-347.221512
+512	0 0 0 0	11776 26112 26112	1	-0.56 0 0	-346.655616
+512	0 0 0 0	12288 26112 26112	1	-0.54 0 0	-346.035864
+512	0 0 0 0	12800 26112 26112	1	-0.52 0 0	-345.359808
+512	0 0 0 0	13312 26112 26112	1	-0.5 0 0	-344.625
+512	0 0 0 0	13824 26112 26112	1	-0.48 0 0	-343.828992
+512	0 0 0 0	14336 26112 26112	1	-0.46 0 0	-342.969336
+512	0 0 0 0	14848 26112 26112	1	-0.44 0 0	-342.043584
+512	0 0 0 0	15360 26112 26112	1	-0.42 0 0	-341.049288
+512	0 0 0 0	15872 26112 26112	1	-0.4 0 0	-339.984
+512	0 0 0 0	16384 26112 26112	1	-0.38 0 0	-338.845272
+512	0 0 0 0	16896 26112 26112	1	-0.36 0 0	-337.630656
+512	0 0 0 0	17408 26112 26112	1	-0.34 0 0	-336.337704
+512	0 0 0 0	17920 26112 26112	1	-0.32 0 0	-334.963968
+512	0 0 0 0	18432 26112 26112	1	-0.3 0 0	-333.507
+512	0 0 0 0	18944 26112 26112	1	-0.28 0 0	-331.964352
+512	0 0 0 0	19456 26112 26112	1	-0.26 0 0	-330.333576
+512	0 0 0 0	19968 26112 26112	1	-0.24 0 0	-328.612224
+512	0 0 0 0	20480 26112 26112	1	-0.22 0 0	-326.797848
+512	0 0 0 0	20992 26112 26112	1	-0.2 0 0	-324.888
+512	0 0 0 0	21504 26112 26112	1	-0.18 0 0	-322.880232
+512	0 0 0 0	22016 26112 26112	1	-0.16 0 0	-320.772096
+512	0 0 0 0	22528 26112 26112	1	-0.14 0 0	-318.561144
+512	0 0 0 0	23040 26112 26112	1	-0.12 0 0	-316.244928
+512	0 0 0 0	23552 26112 26112	1	-0.1 0 0	-313.821
+512	0 0 0 0	24064 26112 26112	1	-0.08 0 0	-311.286912
+512	0 0 0 0	24576 26112 26112	1	-0.06 0 0	-308.640216
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+512	0 0 0 0	25600 26112 26112	1	-0.02 0 0	-302.999208
+512	0 0 0 0	26112 26112 26112	1	0 0 0	-300
+512	0 0 0 0	26624 26112 26112	1	0.02 0 0	-296.878392
+512	0 0 0 0	27136 26112 26112	1	0.04 0 0	-293.631936
+512	0 0 0 0	27648 26112 26112	1	0.06 0 0	-290.258184
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+512	0 0 0 0	28672 26112 26112	1	0.1 0 0	-283.119
+512	0 0 0 0	29184 26112 26112	1	0.12 0 0	-279.348672
+512	0 0 0 0	29696 26112 26112	1	0.14 0 0	-275.441256
+512	0 0 0 0	30208 26112 26112	1	0.16 0 0	-271.394304
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+512	0 0 0 0	31232 26112 26112	1	0.2 0 0	-262.872
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+512	0 0 0 0	35840 26112 26112	1	0.38 0 0	-216.968328
+512	0 0 0 0	36352 26112 26112	1	0.4 0 0	-211.056
+512	0 0 0 0	36864 26112 26112	1	0.42 0 0	-204.972312
+512	0 0 0 0	37376 26112 26112	1	0.44 0 0	-198.714816
+512	0 0 0 0	37888 26112 26112	1	0.46 0 0	-192.281064
+512	0 0 0 0	38400 26112 26112	1	0.48 0 0	-185.668608
+512	0 0 0 0	38912 26112 26112	1	0.5 0 0	-178.875
+512	0 0 0 0	39424 26112 26112	1	0.52 0 0	-171.897792
+512	0 0 0 0	39936 26112 26112	1	0.54 0 0	-164.734536
+512	0 0 0 0	40448 26112 26112	1	0.56 0 0	-157.382784
+512	0 0 0 0	40960 26112 26112	1	0.58 0 0	-149.840088
+512	0 0 0 0	41472 26112 26112	1	0.6 0 0	-142.104
+512	0 0 0 0	41984 26112 26112	1	0.62 0 0	-134.172072
+512	0 0 0 0	42496 26112 26112	1	0.64 0 0	-126.041856
+512	0 0 0 0	43008 26112 26112	1	0.66 0 0	-117.710904
+512	0 0 0 0	43520 26112 26112	1	0.68 0 0	-109.176768
+512	0 0 0 0	44032 26112 26112	1	0.7 0 0	-100.437
+512	0 0 0 0	44544 26112 26112	1	0.72 0 0	-91.489152
+512	0 0 0 0	45056 26112 26112	1	0.74 0 0	-82.330776
+512	0 0 0 0	45568 26112 26112	1	0.76 0 0	-72.959424
+512	0 0 0 0	46080 26112 26112	1	0.78 0 0	-63.372648
+512	0 0 0 0	46592 26112 26112	1	0.8 0 0	-53.568
+512	0 0 0 0	47104 26112 26112	1	0.82 0 0	-43.543032
+512	0 0 0 0	47616 26112 26112	1	0.84 0 0	-33.295296
+512	0 0 0 0	48128 26112 26112	1	0.86 0 0	-22.822344
+512	0 0 0 0	48640 26112 26112	1	0.88 0 0	-12.1217279999999
+512	0 0 0 0	49152 26112 26112	1	0.9 0 0	-1.19100000000005
+512	0 0 0 0	49664 26112 26112	1	0.92 0 0	9.97228799999999
+512	0 0 0 0	50176 26112 26112	1	0.94 0 0	21.370584
+512	0 0 0 0	50688 26112 26112	1	0.96 0 0	33.006336
+512	0 0 0 0	51200 26112 26112	1	0.98 0 0	44.881992
+512	0 0 0 0	51712 26112 26112	1	1 0 0	57
+512	0 0 0 0	52224 26112 26112	1	1.02 0 0	69.362808
+
+
+# iteration 512
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+512	0 1 0 0	19712 26112 26112	1	-0.25 0 0	-329.484375
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+512	0 1 0 0	20224 26112 26112	1	-0.23 0 0	-327.716817
+512	0 1 0 0	20480 26112 26112	1	-0.22 0 0	-326.797848
+512	0 1 0 0	20736 26112 26112	1	-0.21 0 0	-325.855011
+512	0 1 0 0	20992 26112 26112	1	-0.2 0 0	-324.888
+512	0 1 0 0	21248 26112 26112	1	-0.19 0 0	-323.896509
+512	0 1 0 0	21504 26112 26112	1	-0.18 0 0	-322.880232
+512	0 1 0 0	21760 26112 26112	1	-0.17 0 0	-321.838863
+512	0 1 0 0	22016 26112 26112	1	-0.16 0 0	-320.772096
+512	0 1 0 0	22272 26112 26112	1	-0.15 0 0	-319.679625
+512	0 1 0 0	22528 26112 26112	1	-0.14 0 0	-318.561144
+512	0 1 0 0	22784 26112 26112	1	-0.13 0 0	-317.416347
+512	0 1 0 0	23040 26112 26112	1	-0.12 0 0	-316.244928
+512	0 1 0 0	23296 26112 26112	1	-0.11 0 0	-315.046581
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+512	0 1 0 0	24064 26112 26112	1	-0.08 0 0	-311.286912
+512	0 1 0 0	24320 26112 26112	1	-0.07 0 0	-309.977793
+512	0 1 0 0	24576 26112 26112	1	-0.06 0 0	-308.640216
+512	0 1 0 0	24832 26112 26112	1	-0.05 0 0	-307.273875
+512	0 1 0 0	25088 26112 26112	1	-0.04 0 0	-305.878464
+512	0 1 0 0	25344 26112 26112	1	-0.03 0 0	-304.453677
+512	0 1 0 0	25600 26112 26112	1	-0.02 0 0	-302.999208
+512	0 1 0 0	25856 26112 26112	1	-0.01 0 0	-301.514751
+512	0 1 0 0	26112 26112 26112	1	0 0 0	-300
+512	0 1 0 0	26368 26112 26112	1	0.01 0 0	-298.454649
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+512	0 1 0 0	26880 26112 26112	1	0.03 0 0	-295.270923
+512	0 1 0 0	27136 26112 26112	1	0.04 0 0	-293.631936
+512	0 1 0 0	27392 26112 26112	1	0.05 0 0	-291.961125
+512	0 1 0 0	27648 26112 26112	1	0.06 0 0	-290.258184
+512	0 1 0 0	27904 26112 26112	1	0.07 0 0	-288.522807
+512	0 1 0 0	28160 26112 26112	1	0.08 0 0	-286.754688
+512	0 1 0 0	28416 26112 26112	1	0.09 0 0	-284.953521
+512	0 1 0 0	28672 26112 26112	1	0.1 0 0	-283.119
+512	0 1 0 0	28928 26112 26112	1	0.11 0 0	-281.250819
+512	0 1 0 0	29184 26112 26112	1	0.12 0 0	-279.348672
+512	0 1 0 0	29440 26112 26112	1	0.13 0 0	-277.412253
+512	0 1 0 0	29696 26112 26112	1	0.14 0 0	-275.441256
+512	0 1 0 0	29952 26112 26112	1	0.15 0 0	-273.435375
+512	0 1 0 0	30208 26112 26112	1	0.16 0 0	-271.394304
+512	0 1 0 0	30464 26112 26112	1	0.17 0 0	-269.317737
+512	0 1 0 0	30720 26112 26112	1	0.18 0 0	-267.205368
+512	0 1 0 0	30976 26112 26112	1	0.19 0 0	-265.056891
+512	0 1 0 0	31232 26112 26112	1	0.2 0 0	-262.872
+512	0 1 0 0	31488 26112 26112	1	0.21 0 0	-260.650389
+512	0 1 0 0	31744 26112 26112	1	0.22 0 0	-258.391752
+512	0 1 0 0	32000 26112 26112	1	0.23 0 0	-256.095783
+512	0 1 0 0	32256 26112 26112	1	0.24 0 0	-253.762176
+512	0 1 0 0	32512 26112 26112	1	0.25 0 0	-251.390625
+512	0 1 0 0	32768 26112 26112	1	0.26 0 0	-248.980824
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.y.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.y.asc
new file mode 100644
index 000000000..34d178d4d
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.y.asc
@@ -0,0 +1,401 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::SCALAR y (carpetprolongatetest::scalar)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+0	0 0 0 0	26112 512 26112	0	0 -1 0	-119
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+0	0 0 0 0	26112 46080 26112	0	0 0.78 0	-11.844712
+0	0 0 0 0	26112 46592 26112	0	0 0.8 0	-8.19199999999999
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+0	0 0 0 0	26112 47616 26112	0	0 0.84 0	-0.639423999999993
+0	0 0 0 0	26112 48128 26112	0	0 0.86 0	3.26226400000002
+0	0 0 0 0	26112 48640 26112	0	0 0.88 0	7.24876800000003
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+0	0 0 0 0	26112 50688 26112	0	0 0.96 0	24.061184
+0	0 0 0 0	26112 51200 26112	0	0 0.98 0	28.485448
+0	0 0 0 0	26112 51712 26112	0	0 1 0	33
+0	0 0 0 0	26112 52224 26112	0	0 1.02 0	37.605752
+
+
+# iteration 0
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+0	0 1 0 0	26112 29184 26112	0	0 0.12 0	-92.306368
+0	0 1 0 0	26112 29440 26112	0	0 0.13 0	-91.584957
+0	0 1 0 0	26112 29696 26112	0	0 0.14 0	-90.850664
+0	0 1 0 0	26112 29952 26112	0	0 0.15 0	-90.103375
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+0	0 1 0 0	26112 30464 26112	0	0 0.17 0	-88.569353
+0	0 1 0 0	26112 30720 26112	0	0 0.18 0	-87.782392
+0	0 1 0 0	26112 30976 26112	0	0 0.19 0	-86.981979
+0	0 1 0 0	26112 31232 26112	0	0 0.2 0	-86.168
+0	0 1 0 0	26112 31488 26112	0	0 0.21 0	-85.340341
+0	0 1 0 0	26112 31744 26112	0	0 0.22 0	-84.498888
+0	0 1 0 0	26112 32000 26112	0	0 0.23 0	-83.643527
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+0	0 1 0 0	26112 32512 26112	0	0 0.25 0	-81.890625
+0	0 1 0 0	26112 32768 26112	0	0 0.26 0	-80.992856
+
+
+# iteration 256
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+256	0 1 0 0	26112 30208 26112	0.5	0 0.16 0	-156.350208
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+256	0 1 0 0	26112 32768 26112	0.5	0 0.26 0	-141.737498
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+
+
+# iteration 512
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
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+512	0 1 0 0	26112 27904 26112	1	0 0.07 0	-287.172549
+512	0 1 0 0	26112 28160 26112	1	0 0.08 0	-285.196416
+512	0 1 0 0	26112 28416 26112	1	0 0.09 0	-283.183347
+512	0 1 0 0	26112 28672 26112	1	0 0.1 0	-281.133
+512	0 1 0 0	26112 28928 26112	1	0 0.11 0	-279.045033
+512	0 1 0 0	26112 29184 26112	1	0 0.12 0	-276.919104
+512	0 1 0 0	26112 29440 26112	1	0 0.13 0	-274.754871
+512	0 1 0 0	26112 29696 26112	1	0 0.14 0	-272.551992
+512	0 1 0 0	26112 29952 26112	1	0 0.15 0	-270.310125
+512	0 1 0 0	26112 30208 26112	1	0 0.16 0	-268.028928
+512	0 1 0 0	26112 30464 26112	1	0 0.17 0	-265.708059
+512	0 1 0 0	26112 30720 26112	1	0 0.18 0	-263.347176
+512	0 1 0 0	26112 30976 26112	1	0 0.19 0	-260.945937
+512	0 1 0 0	26112 31232 26112	1	0 0.2 0	-258.504
+512	0 1 0 0	26112 31488 26112	1	0 0.21 0	-256.021023
+512	0 1 0 0	26112 31744 26112	1	0 0.22 0	-253.496664
+512	0 1 0 0	26112 32000 26112	1	0 0.23 0	-250.930581
+512	0 1 0 0	26112 32256 26112	1	0 0.24 0	-248.322432
+512	0 1 0 0	26112 32512 26112	1	0 0.25 0	-245.671875
+512	0 1 0 0	26112 32768 26112	1	0 0.26 0	-242.978568
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.z.asc b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.z.asc
new file mode 100644
index 000000000..ea31704b0
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/carpetprolongatetest::scalar.z.asc
@@ -0,0 +1,401 @@
+# 1D ASCII output created by CarpetIOASCII
+# created on erik-schnetters-macbook-pro.local by eschnett on Mar 07 2011 at 14:52:05-0500
+# parameter filename: "../../arrangements/CarpetExtra/CarpetProlongateTest/test/test_interp.par"
+#
+# CARPETPROLONGATETEST::SCALAR z (carpetprolongatetest::scalar)
+#
+# iteration 0
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
+0	0 0 0 0	26112 26112 0	0	0 0 -1.02	-121.000168
+0	0 0 0 0	26112 26112 512	0	0 0 -1	-121
+0	0 0 0 0	26112 26112 1024	0	0 0 -0.98	-120.999832
+0	0 0 0 0	26112 26112 1536	0	0 0 -0.96	-120.998656
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+0	0 0 0 0	26112 26112 2560	0	0 0 -0.92	-120.989248
+0	0 0 0 0	26112 26112 3072	0	0 0 -0.9	-120.979
+0	0 0 0 0	26112 26112 3584	0	0 0 -0.88	-120.963712
+0	0 0 0 0	26112 26112 4096	0	0 0 -0.86	-120.942376
+0	0 0 0 0	26112 26112 4608	0	0 0 -0.84	-120.913984
+0	0 0 0 0	26112 26112 5120	0	0 0 -0.82	-120.877528
+0	0 0 0 0	26112 26112 5632	0	0 0 -0.8	-120.832
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+0	0 0 0 0	26112 26112 9728	0	0 0 -0.64	-120.020224
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+0	0 0 0 0	26112 26112 13312	0	0 0 -0.5	-118.375
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+0	0 0 0 0	26112 26112 14336	0	0 0 -0.46	-117.693256
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+0	0 0 0 0	26112 26112 15360	0	0 0 -0.42	-116.902648
+0	0 0 0 0	26112 26112 15872	0	0 0 -0.4	-116.464
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+0	0 0 0 0	26112 26112 16896	0	0 0 -0.36	-115.494976
+0	0 0 0 0	26112 26112 17408	0	0 0 -0.34	-114.962584
+0	0 0 0 0	26112 26112 17920	0	0 0 -0.32	-114.396928
+0	0 0 0 0	26112 26112 18432	0	0 0 -0.3	-113.797
+0	0 0 0 0	26112 26112 18944	0	0 0 -0.28	-113.161792
+0	0 0 0 0	26112 26112 19456	0	0 0 -0.26	-112.490296
+0	0 0 0 0	26112 26112 19968	0	0 0 -0.24	-111.781504
+0	0 0 0 0	26112 26112 20480	0	0 0 -0.22	-111.034408
+0	0 0 0 0	26112 26112 20992	0	0 0 -0.2	-110.248
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+0	0 0 0 0	26112 26112 36352	0	0 0 0.4	-63.376
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+0	0 0 0 0	26112 26112 37376	0	0 0 0.44	-58.294336
+0	0 0 0 0	26112 26112 37888	0	0 0 0.46	-55.645144
+0	0 0 0 0	26112 26112 38400	0	0 0 0.48	-52.922368
+0	0 0 0 0	26112 26112 38912	0	0 0 0.5	-50.125
+0	0 0 0 0	26112 26112 39424	0	0 0 0.52	-47.252032
+0	0 0 0 0	26112 26112 39936	0	0 0 0.54	-44.302456
+0	0 0 0 0	26112 26112 40448	0	0 0 0.56	-41.275264
+0	0 0 0 0	26112 26112 40960	0	0 0 0.58	-38.169448
+0	0 0 0 0	26112 26112 41472	0	0 0 0.6	-34.984
+0	0 0 0 0	26112 26112 41984	0	0 0 0.62	-31.717912
+0	0 0 0 0	26112 26112 42496	0	0 0 0.64	-28.370176
+0	0 0 0 0	26112 26112 43008	0	0 0 0.66	-24.939784
+0	0 0 0 0	26112 26112 43520	0	0 0 0.68	-21.425728
+0	0 0 0 0	26112 26112 44032	0	0 0 0.7	-17.827
+0	0 0 0 0	26112 26112 44544	0	0 0 0.72	-14.142592
+0	0 0 0 0	26112 26112 45056	0	0 0 0.74	-10.371496
+0	0 0 0 0	26112 26112 45568	0	0 0 0.76	-6.512704
+0	0 0 0 0	26112 26112 46080	0	0 0 0.78	-2.56520799999999
+0	0 0 0 0	26112 26112 46592	0	0 0 0.8	1.47200000000002
+0	0 0 0 0	26112 26112 47104	0	0 0 0.82	5.59992800000002
+0	0 0 0 0	26112 26112 47616	0	0 0 0.84	9.81958400000001
+0	0 0 0 0	26112 26112 48128	0	0 0 0.86	14.131976
+0	0 0 0 0	26112 26112 48640	0	0 0 0.88	18.538112
+0	0 0 0 0	26112 26112 49152	0	0 0 0.9	23.039
+0	0 0 0 0	26112 26112 49664	0	0 0 0.92	27.635648
+0	0 0 0 0	26112 26112 50176	0	0 0 0.94	32.329064
+0	0 0 0 0	26112 26112 50688	0	0 0 0.96	37.120256
+0	0 0 0 0	26112 26112 51200	0	0 0 0.98	42.010232
+0	0 0 0 0	26112 26112 51712	0	0 0 1	47
+0	0 0 0 0	26112 26112 52224	0	0 0 1.02	52.090568
+
+
+# iteration 0
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
+0	0 1 0 0	26112 26112 19456	0	0 0 -0.26	-112.490296
+0	0 1 0 0	26112 26112 19712	0	0 0 -0.25	-112.140625
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+0	0 1 0 0	26112 26112 20736	0	0 0 -0.21	-110.646181
+0	0 1 0 0	26112 26112 20992	0	0 0 -0.2	-110.248
+0	0 1 0 0	26112 26112 21248	0	0 0 -0.19	-109.839739
+0	0 1 0 0	26112 26112 21504	0	0 0 -0.18	-109.421272
+0	0 1 0 0	26112 26112 21760	0	0 0 -0.17	-108.992473
+0	0 1 0 0	26112 26112 22016	0	0 0 -0.16	-108.553216
+0	0 1 0 0	26112 26112 22272	0	0 0 -0.15	-108.103375
+0	0 1 0 0	26112 26112 22528	0	0 0 -0.14	-107.642824
+0	0 1 0 0	26112 26112 22784	0	0 0 -0.13	-107.171437
+0	0 1 0 0	26112 26112 23040	0	0 0 -0.12	-106.689088
+0	0 1 0 0	26112 26112 23296	0	0 0 -0.11	-106.195651
+0	0 1 0 0	26112 26112 23552	0	0 0 -0.1	-105.691
+0	0 1 0 0	26112 26112 23808	0	0 0 -0.09	-105.175009
+0	0 1 0 0	26112 26112 24064	0	0 0 -0.08	-104.647552
+0	0 1 0 0	26112 26112 24320	0	0 0 -0.07	-104.108503
+0	0 1 0 0	26112 26112 24576	0	0 0 -0.06	-103.557736
+0	0 1 0 0	26112 26112 24832	0	0 0 -0.05	-102.995125
+0	0 1 0 0	26112 26112 25088	0	0 0 -0.04	-102.420544
+0	0 1 0 0	26112 26112 25344	0	0 0 -0.03	-101.833867
+0	0 1 0 0	26112 26112 25600	0	0 0 -0.02	-101.234968
+0	0 1 0 0	26112 26112 25856	0	0 0 -0.01	-100.623721
+0	0 1 0 0	26112 26112 26112	0	0 0 0	-100
+0	0 1 0 0	26112 26112 26368	0	0 0 0.01	-99.363679
+0	0 1 0 0	26112 26112 26624	0	0 0 0.02	-98.714632
+0	0 1 0 0	26112 26112 26880	0	0 0 0.03	-98.052733
+0	0 1 0 0	26112 26112 27136	0	0 0 0.04	-97.377856
+0	0 1 0 0	26112 26112 27392	0	0 0 0.05	-96.689875
+0	0 1 0 0	26112 26112 27648	0	0 0 0.06	-95.988664
+0	0 1 0 0	26112 26112 27904	0	0 0 0.07	-95.274097
+0	0 1 0 0	26112 26112 28160	0	0 0 0.08	-94.546048
+0	0 1 0 0	26112 26112 28416	0	0 0 0.09	-93.804391
+0	0 1 0 0	26112 26112 28672	0	0 0 0.1	-93.049
+0	0 1 0 0	26112 26112 28928	0	0 0 0.11	-92.279749
+0	0 1 0 0	26112 26112 29184	0	0 0 0.12	-91.496512
+0	0 1 0 0	26112 26112 29440	0	0 0 0.13	-90.699163
+0	0 1 0 0	26112 26112 29696	0	0 0 0.14	-89.887576
+0	0 1 0 0	26112 26112 29952	0	0 0 0.15	-89.061625
+0	0 1 0 0	26112 26112 30208	0	0 0 0.16	-88.221184
+0	0 1 0 0	26112 26112 30464	0	0 0 0.17	-87.366127
+0	0 1 0 0	26112 26112 30720	0	0 0 0.18	-86.496328
+0	0 1 0 0	26112 26112 30976	0	0 0 0.19	-85.611661
+0	0 1 0 0	26112 26112 31232	0	0 0 0.2	-84.712
+0	0 1 0 0	26112 26112 31488	0	0 0 0.21	-83.797219
+0	0 1 0 0	26112 26112 31744	0	0 0 0.22	-82.867192
+0	0 1 0 0	26112 26112 32000	0	0 0 0.23	-81.921793
+0	0 1 0 0	26112 26112 32256	0	0 0 0.24	-80.960896
+0	0 1 0 0	26112 26112 32512	0	0 0 0.25	-79.984375
+0	0 1 0 0	26112 26112 32768	0	0 0 0.26	-78.992104
+
+
+# iteration 256
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
+256	0 1 0 0	26112 26112 19456	0.5	0 0 -0.26	-196.858018
+256	0 1 0 0	26112 26112 19712	0.5	0 0 -0.25	-196.24609375
+256	0 1 0 0	26112 26112 19968	0.5	0 0 -0.24	-195.617632
+256	0 1 0 0	26112 26112 20224	0.5	0 0 -0.23	-194.97241225
+256	0 1 0 0	26112 26112 20480	0.5	0 0 -0.22	-194.310214
+256	0 1 0 0	26112 26112 20736	0.5	0 0 -0.21	-193.63081675
+256	0 1 0 0	26112 26112 20992	0.5	0 0 -0.2	-192.934
+256	0 1 0 0	26112 26112 21248	0.5	0 0 -0.19	-192.21954325
+256	0 1 0 0	26112 26112 21504	0.5	0 0 -0.18	-191.487226
+256	0 1 0 0	26112 26112 21760	0.5	0 0 -0.17	-190.73682775
+256	0 1 0 0	26112 26112 22016	0.5	0 0 -0.16	-189.968128
+256	0 1 0 0	26112 26112 22272	0.5	0 0 -0.15	-189.18090625
+256	0 1 0 0	26112 26112 22528	0.5	0 0 -0.14	-188.374942
+256	0 1 0 0	26112 26112 22784	0.5	0 0 -0.13	-187.55001475
+256	0 1 0 0	26112 26112 23040	0.5	0 0 -0.12	-186.705904
+256	0 1 0 0	26112 26112 23296	0.5	0 0 -0.11	-185.84238925
+256	0 1 0 0	26112 26112 23552	0.5	0 0 -0.1	-184.95925
+256	0 1 0 0	26112 26112 23808	0.5	0 0 -0.09	-184.05626575
+256	0 1 0 0	26112 26112 24064	0.5	0 0 -0.08	-183.133216
+256	0 1 0 0	26112 26112 24320	0.5	0 0 -0.07	-182.18988025
+256	0 1 0 0	26112 26112 24576	0.5	0 0 -0.06	-181.226038
+256	0 1 0 0	26112 26112 24832	0.5	0 0 -0.05	-180.24146875
+256	0 1 0 0	26112 26112 25088	0.5	0 0 -0.04	-179.235952
+256	0 1 0 0	26112 26112 25344	0.5	0 0 -0.03	-178.20926725
+256	0 1 0 0	26112 26112 25600	0.5	0 0 -0.02	-177.161194
+256	0 1 0 0	26112 26112 25856	0.5	0 0 -0.01	-176.09151175
+256	0 1 0 0	26112 26112 26112	0.5	0 0 0	-175
+256	0 1 0 0	26112 26112 26368	0.5	0 0 0.01	-173.88643825
+256	0 1 0 0	26112 26112 26624	0.5	0 0 0.02	-172.750606
+256	0 1 0 0	26112 26112 26880	0.5	0 0 0.03	-171.59228275
+256	0 1 0 0	26112 26112 27136	0.5	0 0 0.04	-170.411248
+256	0 1 0 0	26112 26112 27392	0.5	0 0 0.05	-169.20728125
+256	0 1 0 0	26112 26112 27648	0.5	0 0 0.06	-167.980162
+256	0 1 0 0	26112 26112 27904	0.5	0 0 0.07	-166.72966975
+256	0 1 0 0	26112 26112 28160	0.5	0 0 0.08	-165.455584
+256	0 1 0 0	26112 26112 28416	0.5	0 0 0.09	-164.15768425
+256	0 1 0 0	26112 26112 28672	0.5	0 0 0.1	-162.83575
+256	0 1 0 0	26112 26112 28928	0.5	0 0 0.11	-161.48956075
+256	0 1 0 0	26112 26112 29184	0.5	0 0 0.12	-160.118896
+256	0 1 0 0	26112 26112 29440	0.5	0 0 0.13	-158.72353525
+256	0 1 0 0	26112 26112 29696	0.5	0 0 0.14	-157.303258
+256	0 1 0 0	26112 26112 29952	0.5	0 0 0.15	-155.85784375
+256	0 1 0 0	26112 26112 30208	0.5	0 0 0.16	-154.387072
+256	0 1 0 0	26112 26112 30464	0.5	0 0 0.17	-152.89072225
+256	0 1 0 0	26112 26112 30720	0.5	0 0 0.18	-151.368574
+256	0 1 0 0	26112 26112 30976	0.5	0 0 0.19	-149.82040675
+256	0 1 0 0	26112 26112 31232	0.5	0 0 0.2	-148.246
+256	0 1 0 0	26112 26112 31488	0.5	0 0 0.21	-146.64513325
+256	0 1 0 0	26112 26112 31744	0.5	0 0 0.22	-145.017586
+256	0 1 0 0	26112 26112 32000	0.5	0 0 0.23	-143.36313775
+256	0 1 0 0	26112 26112 32256	0.5	0 0 0.24	-141.681568
+256	0 1 0 0	26112 26112 32512	0.5	0 0 0.25	-139.97265625
+256	0 1 0 0	26112 26112 32768	0.5	0 0 0.26	-138.236182
+
+
+# iteration 512
+# refinement level 0   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
+512	0 0 0 0	26112 26112 0	1	0 0 -1.02	-363.000504
+512	0 0 0 0	26112 26112 512	1	0 0 -1	-363
+512	0 0 0 0	26112 26112 1024	1	0 0 -0.98	-362.999496
+512	0 0 0 0	26112 26112 1536	1	0 0 -0.96	-362.995968
+512	0 0 0 0	26112 26112 2048	1	0 0 -0.94	-362.986392
+512	0 0 0 0	26112 26112 2560	1	0 0 -0.92	-362.967744
+512	0 0 0 0	26112 26112 3072	1	0 0 -0.9	-362.937
+512	0 0 0 0	26112 26112 3584	1	0 0 -0.88	-362.891136
+512	0 0 0 0	26112 26112 4096	1	0 0 -0.86	-362.827128
+512	0 0 0 0	26112 26112 4608	1	0 0 -0.84	-362.741952
+512	0 0 0 0	26112 26112 5120	1	0 0 -0.82	-362.632584
+512	0 0 0 0	26112 26112 5632	1	0 0 -0.8	-362.496
+512	0 0 0 0	26112 26112 6144	1	0 0 -0.78	-362.329176
+512	0 0 0 0	26112 26112 6656	1	0 0 -0.76	-362.129088
+512	0 0 0 0	26112 26112 7168	1	0 0 -0.74	-361.892712
+512	0 0 0 0	26112 26112 7680	1	0 0 -0.72	-361.617024
+512	0 0 0 0	26112 26112 8192	1	0 0 -0.7	-361.299
+512	0 0 0 0	26112 26112 8704	1	0 0 -0.68	-360.935616
+512	0 0 0 0	26112 26112 9216	1	0 0 -0.66	-360.523848
+512	0 0 0 0	26112 26112 9728	1	0 0 -0.64	-360.060672
+512	0 0 0 0	26112 26112 10240	1	0 0 -0.62	-359.543064
+512	0 0 0 0	26112 26112 10752	1	0 0 -0.6	-358.968
+512	0 0 0 0	26112 26112 11264	1	0 0 -0.58	-358.332456
+512	0 0 0 0	26112 26112 11776	1	0 0 -0.56	-357.633408
+512	0 0 0 0	26112 26112 12288	1	0 0 -0.54	-356.867832
+512	0 0 0 0	26112 26112 12800	1	0 0 -0.52	-356.032704
+512	0 0 0 0	26112 26112 13312	1	0 0 -0.5	-355.125
+512	0 0 0 0	26112 26112 13824	1	0 0 -0.48	-354.141696
+512	0 0 0 0	26112 26112 14336	1	0 0 -0.46	-353.079768
+512	0 0 0 0	26112 26112 14848	1	0 0 -0.44	-351.936192
+512	0 0 0 0	26112 26112 15360	1	0 0 -0.42	-350.707944
+512	0 0 0 0	26112 26112 15872	1	0 0 -0.4	-349.392
+512	0 0 0 0	26112 26112 16384	1	0 0 -0.38	-347.985336
+512	0 0 0 0	26112 26112 16896	1	0 0 -0.36	-346.484928
+512	0 0 0 0	26112 26112 17408	1	0 0 -0.34	-344.887752
+512	0 0 0 0	26112 26112 17920	1	0 0 -0.32	-343.190784
+512	0 0 0 0	26112 26112 18432	1	0 0 -0.3	-341.391
+512	0 0 0 0	26112 26112 18944	1	0 0 -0.28	-339.485376
+512	0 0 0 0	26112 26112 19456	1	0 0 -0.26	-337.470888
+512	0 0 0 0	26112 26112 19968	1	0 0 -0.24	-335.344512
+512	0 0 0 0	26112 26112 20480	1	0 0 -0.22	-333.103224
+512	0 0 0 0	26112 26112 20992	1	0 0 -0.2	-330.744
+512	0 0 0 0	26112 26112 21504	1	0 0 -0.18	-328.263816
+512	0 0 0 0	26112 26112 22016	1	0 0 -0.16	-325.659648
+512	0 0 0 0	26112 26112 22528	1	0 0 -0.14	-322.928472
+512	0 0 0 0	26112 26112 23040	1	0 0 -0.12	-320.067264
+512	0 0 0 0	26112 26112 23552	1	0 0 -0.1	-317.073
+512	0 0 0 0	26112 26112 24064	1	0 0 -0.08	-313.942656
+512	0 0 0 0	26112 26112 24576	1	0 0 -0.06	-310.673208
+512	0 0 0 0	26112 26112 25088	1	0 0 -0.04	-307.261632
+512	0 0 0 0	26112 26112 25600	1	0 0 -0.02	-303.704904
+512	0 0 0 0	26112 26112 26112	1	0 0 0	-300
+512	0 0 0 0	26112 26112 26624	1	0 0 0.02	-296.143896
+512	0 0 0 0	26112 26112 27136	1	0 0 0.04	-292.133568
+512	0 0 0 0	26112 26112 27648	1	0 0 0.06	-287.965992
+512	0 0 0 0	26112 26112 28160	1	0 0 0.08	-283.638144
+512	0 0 0 0	26112 26112 28672	1	0 0 0.1	-279.147
+512	0 0 0 0	26112 26112 29184	1	0 0 0.12	-274.489536
+512	0 0 0 0	26112 26112 29696	1	0 0 0.14	-269.662728
+512	0 0 0 0	26112 26112 30208	1	0 0 0.16	-264.663552
+512	0 0 0 0	26112 26112 30720	1	0 0 0.18	-259.488984
+512	0 0 0 0	26112 26112 31232	1	0 0 0.2	-254.136
+512	0 0 0 0	26112 26112 31744	1	0 0 0.22	-248.601576
+512	0 0 0 0	26112 26112 32256	1	0 0 0.24	-242.882688
+512	0 0 0 0	26112 26112 32768	1	0 0 0.26	-236.976312
+512	0 0 0 0	26112 26112 33280	1	0 0 0.28	-230.879424
+512	0 0 0 0	26112 26112 33792	1	0 0 0.3	-224.589
+512	0 0 0 0	26112 26112 34304	1	0 0 0.32	-218.102016
+512	0 0 0 0	26112 26112 34816	1	0 0 0.34	-211.415448
+512	0 0 0 0	26112 26112 35328	1	0 0 0.36	-204.526272
+512	0 0 0 0	26112 26112 35840	1	0 0 0.38	-197.431464
+512	0 0 0 0	26112 26112 36352	1	0 0 0.4	-190.128
+512	0 0 0 0	26112 26112 36864	1	0 0 0.42	-182.612856
+512	0 0 0 0	26112 26112 37376	1	0 0 0.44	-174.883008
+512	0 0 0 0	26112 26112 37888	1	0 0 0.46	-166.935432
+512	0 0 0 0	26112 26112 38400	1	0 0 0.48	-158.767104
+512	0 0 0 0	26112 26112 38912	1	0 0 0.5	-150.375
+512	0 0 0 0	26112 26112 39424	1	0 0 0.52	-141.756096
+512	0 0 0 0	26112 26112 39936	1	0 0 0.54	-132.907368
+512	0 0 0 0	26112 26112 40448	1	0 0 0.56	-123.825792
+512	0 0 0 0	26112 26112 40960	1	0 0 0.58	-114.508344
+512	0 0 0 0	26112 26112 41472	1	0 0 0.6	-104.952
+512	0 0 0 0	26112 26112 41984	1	0 0 0.62	-95.1537359999999
+512	0 0 0 0	26112 26112 42496	1	0 0 0.64	-85.110528
+512	0 0 0 0	26112 26112 43008	1	0 0 0.66	-74.819352
+512	0 0 0 0	26112 26112 43520	1	0 0 0.68	-64.277184
+512	0 0 0 0	26112 26112 44032	1	0 0 0.7	-53.4810000000001
+512	0 0 0 0	26112 26112 44544	1	0 0 0.72	-42.427776
+512	0 0 0 0	26112 26112 45056	1	0 0 0.74	-31.114488
+512	0 0 0 0	26112 26112 45568	1	0 0 0.76	-19.538112
+512	0 0 0 0	26112 26112 46080	1	0 0 0.78	-7.69562399999997
+512	0 0 0 0	26112 26112 46592	1	0 0 0.8	4.41600000000005
+512	0 0 0 0	26112 26112 47104	1	0 0 0.82	16.7997840000001
+512	0 0 0 0	26112 26112 47616	1	0 0 0.84	29.458752
+512	0 0 0 0	26112 26112 48128	1	0 0 0.86	42.3959280000001
+512	0 0 0 0	26112 26112 48640	1	0 0 0.88	55.6143360000001
+512	0 0 0 0	26112 26112 49152	1	0 0 0.9	69.1169999999999
+512	0 0 0 0	26112 26112 49664	1	0 0 0.92	82.906944
+512	0 0 0 0	26112 26112 50176	1	0 0 0.94	96.987192
+512	0 0 0 0	26112 26112 50688	1	0 0 0.96	111.360768
+512	0 0 0 0	26112 26112 51200	1	0 0 0.98	126.030696
+512	0 0 0 0	26112 26112 51712	1	0 0 1	141
+512	0 0 0 0	26112 26112 52224	1	0 0 1.02	156.271704
+
+
+# iteration 512
+# refinement level 1   multigrid level 0   map 0   component 0   time level 0
+# column format: 1:it	2:tl 3:rl 4:c 5:ml	6:ix 7:iy 8:iz	9:time	10:x 11:y 12:z	13:data
+# data columns: 13:u
+512	0 1 0 0	26112 26112 19456	1	0 0 -0.26	-337.470888
+512	0 1 0 0	26112 26112 19712	1	0 0 -0.25	-336.421875
+512	0 1 0 0	26112 26112 19968	1	0 0 -0.24	-335.344512
+512	0 1 0 0	26112 26112 20224	1	0 0 -0.23	-334.238421
+512	0 1 0 0	26112 26112 20480	1	0 0 -0.22	-333.103224
+512	0 1 0 0	26112 26112 20736	1	0 0 -0.21	-331.938543
+512	0 1 0 0	26112 26112 20992	1	0 0 -0.2	-330.744
+512	0 1 0 0	26112 26112 21248	1	0 0 -0.19	-329.519217
+512	0 1 0 0	26112 26112 21504	1	0 0 -0.18	-328.263816
+512	0 1 0 0	26112 26112 21760	1	0 0 -0.17	-326.977419
+512	0 1 0 0	26112 26112 22016	1	0 0 -0.16	-325.659648
+512	0 1 0 0	26112 26112 22272	1	0 0 -0.15	-324.310125
+512	0 1 0 0	26112 26112 22528	1	0 0 -0.14	-322.928472
+512	0 1 0 0	26112 26112 22784	1	0 0 -0.13	-321.514311
+512	0 1 0 0	26112 26112 23040	1	0 0 -0.12	-320.067264
+512	0 1 0 0	26112 26112 23296	1	0 0 -0.11	-318.586953
+512	0 1 0 0	26112 26112 23552	1	0 0 -0.1	-317.073
+512	0 1 0 0	26112 26112 23808	1	0 0 -0.09	-315.525027
+512	0 1 0 0	26112 26112 24064	1	0 0 -0.08	-313.942656
+512	0 1 0 0	26112 26112 24320	1	0 0 -0.07	-312.325509
+512	0 1 0 0	26112 26112 24576	1	0 0 -0.06	-310.673208
+512	0 1 0 0	26112 26112 24832	1	0 0 -0.05	-308.985375
+512	0 1 0 0	26112 26112 25088	1	0 0 -0.04	-307.261632
+512	0 1 0 0	26112 26112 25344	1	0 0 -0.03	-305.501601
+512	0 1 0 0	26112 26112 25600	1	0 0 -0.02	-303.704904
+512	0 1 0 0	26112 26112 25856	1	0 0 -0.01	-301.871163
+512	0 1 0 0	26112 26112 26112	1	0 0 0	-300
+512	0 1 0 0	26112 26112 26368	1	0 0 0.01	-298.091037
+512	0 1 0 0	26112 26112 26624	1	0 0 0.02	-296.143896
+512	0 1 0 0	26112 26112 26880	1	0 0 0.03	-294.158199
+512	0 1 0 0	26112 26112 27136	1	0 0 0.04	-292.133568
+512	0 1 0 0	26112 26112 27392	1	0 0 0.05	-290.069625
+512	0 1 0 0	26112 26112 27648	1	0 0 0.06	-287.965992
+512	0 1 0 0	26112 26112 27904	1	0 0 0.07	-285.822291
+512	0 1 0 0	26112 26112 28160	1	0 0 0.08	-283.638144
+512	0 1 0 0	26112 26112 28416	1	0 0 0.09	-281.413173
+512	0 1 0 0	26112 26112 28672	1	0 0 0.1	-279.147
+512	0 1 0 0	26112 26112 28928	1	0 0 0.11	-276.839247
+512	0 1 0 0	26112 26112 29184	1	0 0 0.12	-274.489536
+512	0 1 0 0	26112 26112 29440	1	0 0 0.13	-272.097489
+512	0 1 0 0	26112 26112 29696	1	0 0 0.14	-269.662728
+512	0 1 0 0	26112 26112 29952	1	0 0 0.15	-267.184875
+512	0 1 0 0	26112 26112 30208	1	0 0 0.16	-264.663552
+512	0 1 0 0	26112 26112 30464	1	0 0 0.17	-262.098381
+512	0 1 0 0	26112 26112 30720	1	0 0 0.18	-259.488984
+512	0 1 0 0	26112 26112 30976	1	0 0 0.19	-256.834983
+512	0 1 0 0	26112 26112 31232	1	0 0 0.2	-254.136
+512	0 1 0 0	26112 26112 31488	1	0 0 0.21	-251.391657
+512	0 1 0 0	26112 26112 31744	1	0 0 0.22	-248.601576
+512	0 1 0 0	26112 26112 32000	1	0 0 0.23	-245.765379
+512	0 1 0 0	26112 26112 32256	1	0 0 0.24	-242.882688
+512	0 1 0 0	26112 26112 32512	1	0 0 0.25	-239.953125
+512	0 1 0 0	26112 26112 32768	1	0 0 0.26	-236.976312
+
+
diff --git a/CarpetExtra/CarpetProlongateTest/test/test_interp/test_interp.par b/CarpetExtra/CarpetProlongateTest/test/test_interp/test_interp.par
new file mode 100644
index 000000000..06e11e855
--- /dev/null
+++ b/CarpetExtra/CarpetProlongateTest/test/test_interp/test_interp.par
@@ -0,0 +1,112 @@
+Cactus::cctk_itlast = 512
+
+
+
+ActiveThorns = "IOUtil"
+
+IO::out_dir = $parfile
+
+
+
+ActiveThorns = "AEILocalInterp"
+
+ActiveThorns = "InitBase"
+InitBase::initial_data_setup_method = "init_single_level"
+
+ActiveThorns = "LoopControl"
+
+
+
+ActiveThorns = "Carpet CarpetLib CarpetInterp CarpetReduce"
+
+Carpet::domain_from_coordbase = yes
+Carpet::max_refinement_levels = 10
+
+driver::ghost_size       = 2
+Carpet::use_buffer_zones = yes
+
+Carpet::prolongation_order_space = 3
+Carpet::prolongation_order_time  = 2
+
+Carpet::init_each_timelevel = yes
+
+Carpet::poison_new_timelevels = yes
+CarpetLib::poison_new_memory  = yes
+
+
+
+ActiveThorns = "Boundary CartGrid3D CoordBase SymBase"
+
+CoordBase::domainsize = "minmax"
+
+CoordBase::xmin = -1.00
+CoordBase::ymin = -1.00
+CoordBase::zmin = -1.00
+CoordBase::xmax = +1.00
+CoordBase::ymax = +1.00
+CoordBase::zmax = +1.00
+CoordBase::dx   =  0.02
+CoordBase::dy   =  0.02
+CoordBase::dz   =  0.02
+
+CoordBase::boundary_size_x_lower = 2
+CoordBase::boundary_size_y_lower = 2
+CoordBase::boundary_size_z_lower = 2
+CoordBase::boundary_size_x_upper = 2
+CoordBase::boundary_size_y_upper = 2
+CoordBase::boundary_size_z_upper = 2
+
+CartGrid3D::type = "coordbase"
+
+
+
+ActiveThorns = "SphericalSurface"
+
+
+
+ActiveThorns = "CarpetRegrid2 CarpetTracker"
+
+CarpetRegrid2::regrid_every = 0
+CarpetRegrid2::verbose      = yes
+
+CarpetRegrid2::num_centres = 1
+
+CarpetRegrid2::num_levels_1 = 2
+CarpetRegrid2::radius_1[1]  = 0.2
+
+
+
+ActiveThorns = "MoL"
+
+
+
+ActiveThorns = "CarpetProlongateTest"
+
+CarpetProlongateTest::power_x = 3
+CarpetProlongateTest::power_y = 3
+CarpetProlongateTest::power_z = 3
+CarpetProlongateTest::power_t = 2
+
+CarpetProlongateTest::interpolator_options = "order=4"
+
+
+
+ActiveThorns = "CarpetIOASCII"
+
+IOASCII::one_file_per_group = yes
+
+IOASCII::out0D_every = 1
+IOASCII::out0D_vars  = "
+        CarpetProlongateTest::interp_errornorm
+"
+
+IOASCII::out1D_every = 1
+IOASCII::out1D_vars  = "
+        CarpetProlongateTest::scalar
+        CarpetProlongateTest::interp_difference
+"
+
+IOASCII::out3D_every = 1
+IOASCII::out3D_vars  = "
+        CarpetProlongateTest::interp_difference
+"