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    <p>Dear Users.</p>
    <p>I am runing --parfile
      repos/ctthorns/CT_MultiLevel/par/twopunctures.par.</p>
    <p>######################################<br>
      # Flesh parameters<br>
      ######################################<br>
      <br>
      Cactus::cctk_run_title = "Solving the Hamiltonian constraint for
      two punctures with CT_MultiLevel (multigrid setup, FMG) and with
      TwoPunctures"<br>
      <br>
      Cactus::cctk_full_warnings         = yes<br>
      Cactus::highlight_warning_messages = no<br>
      Cactus::cctk_timer_output          = "off"<br>
      <br>
      Cactus::terminate       = "any"<br>
      Cactus::cctk_initial_time = 0<br>
      Cactus::cctk_final_time = 30<br>
      Cactus::cctk_itlast     = 200<br>
      <br>
      <br>
#############################################################################################<br>
      ActiveThorns = "Boundary CartGrid3D CoordBase Slab SymBase"<br>
#############################################################################################<br>
      <br>
      CoordBase::domainsize = "minmax"<br>
      <br>
      CoordBase::xmin =  -40.00<br>
      CoordBase::ymin =  -40.00<br>
      CoordBase::zmin =  -40.00<br>
      CoordBase::xmax =  +40.00<br>
      CoordBase::ymax =  +40.00<br>
      CoordBase::zmax =  +40.00<br>
      CoordBase::dx   =  10<br>
      CoordBase::dy   =  10<br>
      CoordBase::dz   =  10<br>
      <br>
      CoordBase::boundary_size_x_lower     = 3<br>
      CoordBase::boundary_size_y_lower     = 3<br>
      CoordBase::boundary_size_z_lower     = 3<br>
      CoordBase::boundary_size_x_upper     = 3<br>
      CoordBase::boundary_size_y_upper     = 3<br>
      CoordBase::boundary_size_z_upper     = 3<br>
      <br>
      CoordBase::boundary_shiftout_x_lower = 1<br>
      CoordBase::boundary_shiftout_y_lower = 1<br>
      CoordBase::boundary_shiftout_z_lower = 1<br>
      CoordBase::boundary_shiftout_x_upper = 1<br>
      CoordBase::boundary_shiftout_y_upper = 1<br>
      CoordBase::boundary_shiftout_z_upper = 1<br>
      <br>
      CartGrid3D::type = "coordbase"<br>
      <br>
##################################################################################<br>
      ActiveThorns = "IOUtil Carpet CarpetLib CarpetInterp LoopControl
      CarpetReduce CarpetSlab"<br>
##################################################################################<br>
      <br>
      Carpet::adaptive_stepsize = "no"<br>
      <br>
      Carpet::schedule_barriers = no<br>
      CarpetLib::output_bboxes  = no<br>
      Carpet::init_fill_timelevels = "yes"<br>
      <br>
      Carpet::domain_from_coordbase = yes<br>
      Carpet::max_refinement_levels = 5<br>
      <br>
      driver::ghost_size       = 3<br>
      Carpet::use_buffer_zones = yes<br>
      <br>
      Carpet::prolongation_order_space = 5<br>
      Carpet::prolongation_order_time  = 2<br>
      <br>
      Carpet::convergence_level = 0<br>
      <br>
      Carpet::poison_new_timelevels = yes<br>
      CarpetLib::poison_new_memory  = yes<br>
      <br>
      Carpet::output_timers_every      = 0<br>
      CarpetLib::print_timestats_every = 0<br>
      CarpetLib::print_memstats_every  = 0<br>
      <br>
      CarpetLib::max_allowed_memory_MB = 12288<br>
      <br>
      ##################################################################<br>
      ActiveThorns = "CarpetRegrid2"<br>
      ##################################################################<br>
      <br>
      Carpet::grid_structure_filename = "grid_structure.asc"<br>
      Carpet::grid_coordinates_filename = "grid_coordinates.asc"<br>
      <br>
      CarpetRegrid2::num_centres  = 1<br>
      CarpetRegrid2::num_levels_1 = 4<br>
      CarpetRegrid2::radius_1[1]  = 50<br>
      CarpetRegrid2::radius_1[2]  = 25<br>
      CarpetRegrid2::radius_1[3]  = 12<br>
      #CarpetRegrid2::radius_1[4]  = 50<br>
      #CarpetRegrid2::radius_1[5]  = 25<br>
      #CarpetRegrid2::radius_1[6]  = 12<br>
      #CarpetRegrid2::radius_1[7]  =  6<br>
      <br>
      #################################<br>
      ActiveThorns = "AEILocalInterp"<br>
      ActiveThorns = "BLAS LAPACK"<br>
      ActiveThorns = "Fortran"<br>
      ActiveThorns = "GenericFD"<br>
      ActiveThorns = "HDF5"<br>
      ActiveThorns = "InitBase"<br>
      ActiveThorns = "LocalInterp"<br>
      #################################<br>
      <br>
      #################################<br>
      ActiveThorns = "MoL Time"<br>
      #################################<br>
      <br>
      MoL::ODE_Method             = "RK4"<br>
      MoL::MoL_Intermediate_Steps = 4<br>
      MoL::MoL_Num_Scratch_Levels = 1<br>
      <br>
      Time::dtfac   = 0.2<br>
      <br>
###################################################################################################<br>
      ActiveThorns = "CT_MultiLevel CT_Analytic ADMBase ML_BSSN
      ML_BSSN_Helper CoordGauge StaticConformal TmunuBase ADMCoupling
      ADMMacros TwoPunctures"<br>
###################################################################################################<br>
      <br>
      ADMBase::metric_timelevels = 3<br>
      ADMBase::lapse_timelevels = 3<br>
      ADMBase::shift_timelevels = 3<br>
      <br>
      ADMBase::metric_type = "physical"<br>
      <br>
      ADMBase::initial_data    = "twopunctures"<br>
      ADMBase::initial_lapse   = "twopunctures-averaged"<br>
      ADMBase::initial_shift   = "zero"<br>
      ADMBase::initial_dtlapse = "zero"<br>
      ADMBase::initial_dtshift = "zero"<br>
      <br>
      ADMBase::evolution_method         = "ML_BSSN"<br>
      ADMBase::lapse_evolution_method   = "ML_BSSN"<br>
      ADMBase::shift_evolution_method   = "ML_BSSN"<br>
      ADMBase::dtlapse_evolution_method = "ML_BSSN"<br>
      ADMBase::dtshift_evolution_method = "ML_BSSN"<br>
      <br>
      ADMBase::admbase_boundary_condition = "none"<br>
      <br>
      TwoPunctures::par_b          =  1.168642873<br>
      TwoPunctures::par_m_plus     =  0.453<br>
      TwoPunctures::par_m_minus    =  0.453<br>
      TwoPunctures::par_P_plus [1] = +0.3331917498<br>
      TwoPunctures::par_P_minus[1] = -0.3331917498<br>
      <br>
      #TwoPunctures::grid_setup_method = "evaluation"<br>
      <br>
      TwoPunctures::TP_epsilon = 1.0e-2<br>
      TwoPunctures::TP_Tiny    = 1.0e-2<br>
      <br>
      TwoPunctures::keep_u_around = "yes"<br>
      <br>
      CT_MultiLevel::cycle_type          = "FMG cycle"<br>
      CT_MultiLevel::tol                 = 1e-12<br>
      CT_MultiLevel::omega               = 1<br>
      CT_MultiLevel::fd_order            = 4<br>
      CT_MultiLevel::output_norms        = "yes"<br>
      CT_MultiLevel::output_walk         = "yes"<br>
      CT_MultiLevel::nrelsteps_down      = 700<br>
      CT_MultiLevel::nrelsteps_up        = 650<br>
      CT_MultiLevel::nrelsteps_bottom    = 700<br>
      CT_MultiLevel::nrelsteps_top       = 650<br>
      CT_MultiLevel::topMGlevel          = 4<br>
      CT_MultiLevel::number_of_equations = 1<br>
      CT_MultiLevel::number_of_auxiliaries = 1<br>
      CT_MultiLevel::fill_ADM              = "yes"<br>
      CT_MultiLevel::fill_Aij              = "Analytic Aij"<br>
      CT_MultiLevel::boundary_conditions   = "TwoPunctures"<br>
      <br>
      CT_MultiLevel::compare_to_exact      = "yes"<br>
      CT_MultiLevel::exact_solution_gfname[0] =
      "TwoPunctures::puncture_u"<br>
      CT_MultiLevel::exact_offset             = -1.0<br>
      <br>
      CT_MultiLevel::inipsi_gfname[0]    = "CT_Analytic::testinipsi"<br>
      CT_MultiLevel::cxx_gfname[0]       = "CT_Analytic::testcxx"<br>
      CT_MultiLevel::cyy_gfname[0]       = "CT_Analytic::testcyy"<br>
      CT_MultiLevel::czz_gfname[0]       = "CT_Analytic::testczz"<br>
      CT_MultiLevel::n0[0]               = -7<br>
      CT_MultiLevel::c0_gfname[0]        =
      "CT_MultiLevel::ct_auxiliary[0]"<br>
      CT_MultiLevel::a0_gfname[0]        = "CT_Analytic::testa0"<br>
      <br>
      CT_MultiLevel::model               = "Bowen-York"<br>
      CT_Analytic::free_data             = "Bowen-York"<br>
      CT_Analytic::ampI                  = 1<br>
      CT_Analytic::ampC                  = 1<br>
      CT_Analytic::massa                 = 0.453<br>
      CT_Analytic::massb                 = 0.453<br>
      CT_Analytic::xa                    = 1.168642873<br>
      CT_Analytic::xb                    = -1.168642873<br>
      CT_Analytic::Pay                   = 0.3331917498<br>
      CT_Analytic::Pby                   = -0.3331917498<br>
      <br>
      CT_Analytic::other_timelevels      = 3<br>
      <br>
      #################################<br>
      ActiveThorns = "CarpetIOBasic"<br>
      #################################<br>
      <br>
      IOBasic::outInfo_every      = 1<br>
      IOBasic::outInfo_reductions = "norm2"<br>
      IOBasic::outInfo_vars       = "<br>
          CT_MultiLevel::psi<br>
              Carpet::physical_time_per_hour<br>
      "<br>
      <br>
      #################################<br>
      ActiveThorns = "CarpetIOScalar"<br>
      #################################<br>
      <br>
      IO::out_dir = $parfile<br>
      <br>
      IOScalar::one_file_per_group = yes<br>
      <br>
      IOScalar::outScalar_every = 0<br>
      IOScalar::outScalar_vars  = "<br>
      "<br>
      <br>
      #################################<br>
      ActiveThorns = "CarpetIOASCII"<br>
      #################################<br>
      <br>
      IOASCII::one_file_per_group = yes<br>
      <br>
      IOASCII::output_symmetry_points = yes<br>
      IOASCII::out3D_ghosts           = yes<br>
      <br>
      IOASCII::out0D_criterion = "divisor"<br>
      IOASCII::out0D_every = 0<br>
      IOASCII::out0D_vars  = "<br>
      "<br>
      <br>
      IOASCII::output_all_timelevels = "no"<br>
      IOASCII::out1D_criterion = "divisor"<br>
      IOASCII::out1D_every = 1<br>
      IOASCII::out1D_vars  = "<br>
          CT_MultiLevel::psi<br>
          CT_MultiLevel::residual<br>
          CT_MultiLevel::err<br>
              ADMBase::metric<br>
              ADMBase::curv<br>
          ML_BSSN::ML_log_confac<br>
          ML_BSSN::ML_ham<br>
          TwoPunctures::puncture_u<br>
      "<br>
      <br>
      IOASCII::out2D_every = 0<br>
      IOASCII::out2D_criterion = "divisor"<br>
      IOASCII::out2D_vars  = "<br>
      "<br>
      <br>
      IOASCII::out3D_every = 0<br>
      IOASCII::out3D_criterion = "divisor"<br>
      IOASCII::out3D_vars  = "<br>
          CT_MultiLevel::psi<br>
          CT_MultiLevel::coeffs<br>
      "<br>
      <br>
      #################################<br>
      Activethorns = "CarpetIOHDF5"<br>
      #################################<br>
      <br>
      IOHDF5::out_criterion = "divisor"<br>
      IOHDF5::out_every          = 1<br>
      IOHDF5::one_file_per_group = yes<br>
      IOHDF5::compression_level  = 0<br>
      IOHDF5::out_vars  = "<br>
          CT_MultiLevel::psi<br>
          CT_MultiLevel::err<br>
          CT_MultiLevel::residual<br>
          ML_BSSN::ML_log_confac<br>
          ML_BSSN::ML_ham<br>
          TwoPunctures::puncture_u<br>
      "<br>
      <br>
      IOHDF5::checkpoint          = "no"<br>
      <br>
      #################################<br>
      ActiveThorns = "Formaline"<br>
      #################################<br>
      <br>
      #################################<br>
      ActiveThorns = "TimerReport"<br>
      #################################<br>
      <br>
      TimerReport::out_every    = 512<br>
      TimerReport::out_filename = "TimerReport"</p>
    <p><b><font color="#000345">My ouput shows -nan after first
          itration.</font> </b></p>
    <pre>   0     0.000 |    1.0013688 |    0.0000000
        2     0.250 |         -nan | 1.128073e+03
        4     0.500 |         -nan | 1.382569e+03
        6     0.750 |         -nan | 1.318078e+03
        8     1.000 |         -nan | 1.399377e+03
       10     1.250 |         -nan | 1.336436e+03
       12     1.500 |         -nan | 1.395822e+03
       14     1.750 |         -nan | 1.364895e+03
       16     2.000 |         -nan | 1.398991e+03
       18     2.250 |         -nan | 1.359115e+03
       20     2.500 |         -nan | 1.393235e+03
I set refinement levels, radius, topMG. no error found in running.

Kindly, 
</pre>
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