[Users] -nan output.
Zach Etienne
zachetie at gmail.com
Thu Aug 27 13:50:11 CDT 2020
Hi Bilal,
You are under-resolving the black holes. For stability you will
need gridspacing of at least ~1/16 around each black hole (M/16, where M=1
for this binary), and here your gridspacing is 1.25. I would suggest
starting by trying to reproduce the binary black hole gallery example:
https://einsteintoolkit.org/gallery/bbh/index.html
and adding small adjustments until you get it working according to your
needs.
-Zach
* * *
Prof. Zachariah Etienne
Physics & Astronomy Dept.
West Virginia University
http://astro.phys.wvu.edu/zetienne/
http://blackholesathome.net
<https://blackholesathome.net>
On Thu, Aug 27, 2020 at 2:38 PM Bilal Hameed <bilalhameedawan962 at gmail.com>
wrote:
> Dear Users.
>
> I am runing --parfile repos/ctthorns/CT_MultiLevel/par/twopunctures.par.
>
> ######################################
> # Flesh parameters
> ######################################
>
> Cactus::cctk_run_title = "Solving the Hamiltonian constraint for two
> punctures with CT_MultiLevel (multigrid setup, FMG) and with TwoPunctures"
>
> Cactus::cctk_full_warnings = yes
> Cactus::highlight_warning_messages = no
> Cactus::cctk_timer_output = "off"
>
> Cactus::terminate = "any"
> Cactus::cctk_initial_time = 0
> Cactus::cctk_final_time = 30
> Cactus::cctk_itlast = 200
>
>
>
> #############################################################################################
> ActiveThorns = "Boundary CartGrid3D CoordBase Slab SymBase"
>
> #############################################################################################
>
> CoordBase::domainsize = "minmax"
>
> CoordBase::xmin = -40.00
> CoordBase::ymin = -40.00
> CoordBase::zmin = -40.00
> CoordBase::xmax = +40.00
> CoordBase::ymax = +40.00
> CoordBase::zmax = +40.00
> CoordBase::dx = 10
> CoordBase::dy = 10
> CoordBase::dz = 10
>
> CoordBase::boundary_size_x_lower = 3
> CoordBase::boundary_size_y_lower = 3
> CoordBase::boundary_size_z_lower = 3
> CoordBase::boundary_size_x_upper = 3
> CoordBase::boundary_size_y_upper = 3
> CoordBase::boundary_size_z_upper = 3
>
> CoordBase::boundary_shiftout_x_lower = 1
> CoordBase::boundary_shiftout_y_lower = 1
> CoordBase::boundary_shiftout_z_lower = 1
> CoordBase::boundary_shiftout_x_upper = 1
> CoordBase::boundary_shiftout_y_upper = 1
> CoordBase::boundary_shiftout_z_upper = 1
>
> CartGrid3D::type = "coordbase"
>
>
> ##################################################################################
> ActiveThorns = "IOUtil Carpet CarpetLib CarpetInterp LoopControl
> CarpetReduce CarpetSlab"
>
> ##################################################################################
>
> Carpet::adaptive_stepsize = "no"
>
> Carpet::schedule_barriers = no
> CarpetLib::output_bboxes = no
> Carpet::init_fill_timelevels = "yes"
>
> Carpet::domain_from_coordbase = yes
> Carpet::max_refinement_levels = 5
>
> driver::ghost_size = 3
> Carpet::use_buffer_zones = yes
>
> Carpet::prolongation_order_space = 5
> Carpet::prolongation_order_time = 2
>
> Carpet::convergence_level = 0
>
> Carpet::poison_new_timelevels = yes
> CarpetLib::poison_new_memory = yes
>
> Carpet::output_timers_every = 0
> CarpetLib::print_timestats_every = 0
> CarpetLib::print_memstats_every = 0
>
> CarpetLib::max_allowed_memory_MB = 12288
>
> ##################################################################
> ActiveThorns = "CarpetRegrid2"
> ##################################################################
>
> Carpet::grid_structure_filename = "grid_structure.asc"
> Carpet::grid_coordinates_filename = "grid_coordinates.asc"
>
> CarpetRegrid2::num_centres = 1
> CarpetRegrid2::num_levels_1 = 4
> CarpetRegrid2::radius_1[1] = 50
> CarpetRegrid2::radius_1[2] = 25
> CarpetRegrid2::radius_1[3] = 12
> #CarpetRegrid2::radius_1[4] = 50
> #CarpetRegrid2::radius_1[5] = 25
> #CarpetRegrid2::radius_1[6] = 12
> #CarpetRegrid2::radius_1[7] = 6
>
> #################################
> ActiveThorns = "AEILocalInterp"
> ActiveThorns = "BLAS LAPACK"
> ActiveThorns = "Fortran"
> ActiveThorns = "GenericFD"
> ActiveThorns = "HDF5"
> ActiveThorns = "InitBase"
> ActiveThorns = "LocalInterp"
> #################################
>
> #################################
> ActiveThorns = "MoL Time"
> #################################
>
> MoL::ODE_Method = "RK4"
> MoL::MoL_Intermediate_Steps = 4
> MoL::MoL_Num_Scratch_Levels = 1
>
> Time::dtfac = 0.2
>
>
> ###################################################################################################
> ActiveThorns = "CT_MultiLevel CT_Analytic ADMBase ML_BSSN ML_BSSN_Helper
> CoordGauge StaticConformal TmunuBase ADMCoupling ADMMacros TwoPunctures"
>
> ###################################################################################################
>
> ADMBase::metric_timelevels = 3
> ADMBase::lapse_timelevels = 3
> ADMBase::shift_timelevels = 3
>
> ADMBase::metric_type = "physical"
>
> ADMBase::initial_data = "twopunctures"
> ADMBase::initial_lapse = "twopunctures-averaged"
> ADMBase::initial_shift = "zero"
> ADMBase::initial_dtlapse = "zero"
> ADMBase::initial_dtshift = "zero"
>
> ADMBase::evolution_method = "ML_BSSN"
> ADMBase::lapse_evolution_method = "ML_BSSN"
> ADMBase::shift_evolution_method = "ML_BSSN"
> ADMBase::dtlapse_evolution_method = "ML_BSSN"
> ADMBase::dtshift_evolution_method = "ML_BSSN"
>
> ADMBase::admbase_boundary_condition = "none"
>
> TwoPunctures::par_b = 1.168642873
> TwoPunctures::par_m_plus = 0.453
> TwoPunctures::par_m_minus = 0.453
> TwoPunctures::par_P_plus [1] = +0.3331917498
> TwoPunctures::par_P_minus[1] = -0.3331917498
>
> #TwoPunctures::grid_setup_method = "evaluation"
>
> TwoPunctures::TP_epsilon = 1.0e-2
> TwoPunctures::TP_Tiny = 1.0e-2
>
> TwoPunctures::keep_u_around = "yes"
>
> CT_MultiLevel::cycle_type = "FMG cycle"
> CT_MultiLevel::tol = 1e-12
> CT_MultiLevel::omega = 1
> CT_MultiLevel::fd_order = 4
> CT_MultiLevel::output_norms = "yes"
> CT_MultiLevel::output_walk = "yes"
> CT_MultiLevel::nrelsteps_down = 700
> CT_MultiLevel::nrelsteps_up = 650
> CT_MultiLevel::nrelsteps_bottom = 700
> CT_MultiLevel::nrelsteps_top = 650
> CT_MultiLevel::topMGlevel = 4
> CT_MultiLevel::number_of_equations = 1
> CT_MultiLevel::number_of_auxiliaries = 1
> CT_MultiLevel::fill_ADM = "yes"
> CT_MultiLevel::fill_Aij = "Analytic Aij"
> CT_MultiLevel::boundary_conditions = "TwoPunctures"
>
> CT_MultiLevel::compare_to_exact = "yes"
> CT_MultiLevel::exact_solution_gfname[0] = "TwoPunctures::puncture_u"
> CT_MultiLevel::exact_offset = -1.0
>
> CT_MultiLevel::inipsi_gfname[0] = "CT_Analytic::testinipsi"
> CT_MultiLevel::cxx_gfname[0] = "CT_Analytic::testcxx"
> CT_MultiLevel::cyy_gfname[0] = "CT_Analytic::testcyy"
> CT_MultiLevel::czz_gfname[0] = "CT_Analytic::testczz"
> CT_MultiLevel::n0[0] = -7
> CT_MultiLevel::c0_gfname[0] = "CT_MultiLevel::ct_auxiliary[0]"
> CT_MultiLevel::a0_gfname[0] = "CT_Analytic::testa0"
>
> CT_MultiLevel::model = "Bowen-York"
> CT_Analytic::free_data = "Bowen-York"
> CT_Analytic::ampI = 1
> CT_Analytic::ampC = 1
> CT_Analytic::massa = 0.453
> CT_Analytic::massb = 0.453
> CT_Analytic::xa = 1.168642873
> CT_Analytic::xb = -1.168642873
> CT_Analytic::Pay = 0.3331917498
> CT_Analytic::Pby = -0.3331917498
>
> CT_Analytic::other_timelevels = 3
>
> #################################
> ActiveThorns = "CarpetIOBasic"
> #################################
>
> IOBasic::outInfo_every = 1
> IOBasic::outInfo_reductions = "norm2"
> IOBasic::outInfo_vars = "
> CT_MultiLevel::psi
> Carpet::physical_time_per_hour
> "
>
> #################################
> ActiveThorns = "CarpetIOScalar"
> #################################
>
> IO::out_dir = $parfile
>
> IOScalar::one_file_per_group = yes
>
> IOScalar::outScalar_every = 0
> IOScalar::outScalar_vars = "
> "
>
> #################################
> ActiveThorns = "CarpetIOASCII"
> #################################
>
> IOASCII::one_file_per_group = yes
>
> IOASCII::output_symmetry_points = yes
> IOASCII::out3D_ghosts = yes
>
> IOASCII::out0D_criterion = "divisor"
> IOASCII::out0D_every = 0
> IOASCII::out0D_vars = "
> "
>
> IOASCII::output_all_timelevels = "no"
> IOASCII::out1D_criterion = "divisor"
> IOASCII::out1D_every = 1
> IOASCII::out1D_vars = "
> CT_MultiLevel::psi
> CT_MultiLevel::residual
> CT_MultiLevel::err
> ADMBase::metric
> ADMBase::curv
> ML_BSSN::ML_log_confac
> ML_BSSN::ML_ham
> TwoPunctures::puncture_u
> "
>
> IOASCII::out2D_every = 0
> IOASCII::out2D_criterion = "divisor"
> IOASCII::out2D_vars = "
> "
>
> IOASCII::out3D_every = 0
> IOASCII::out3D_criterion = "divisor"
> IOASCII::out3D_vars = "
> CT_MultiLevel::psi
> CT_MultiLevel::coeffs
> "
>
> #################################
> Activethorns = "CarpetIOHDF5"
> #################################
>
> IOHDF5::out_criterion = "divisor"
> IOHDF5::out_every = 1
> IOHDF5::one_file_per_group = yes
> IOHDF5::compression_level = 0
> IOHDF5::out_vars = "
> CT_MultiLevel::psi
> CT_MultiLevel::err
> CT_MultiLevel::residual
> ML_BSSN::ML_log_confac
> ML_BSSN::ML_ham
> TwoPunctures::puncture_u
> "
>
> IOHDF5::checkpoint = "no"
>
> #################################
> ActiveThorns = "Formaline"
> #################################
>
> #################################
> ActiveThorns = "TimerReport"
> #################################
>
> TimerReport::out_every = 512
> TimerReport::out_filename = "TimerReport"
>
> *My ouput shows -nan after first itration. *
>
> 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,
>
> _______________________________________________
> Users mailing list
> Users at einsteintoolkit.org
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>
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