SpECTRE Documentation Coverage Report
Current view: top level - Evolution/Executables/GrMhd/ValenciaDivClean - EvolveValenciaDivClean.hpp Hit Total Coverage
Commit: 1e29a35ad8559408f21493dc5db8a49a237bb2f0 Lines: 0 77 0.0 %
Date: 2026-03-31 22:27:51
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          Line data    Source code
       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include <cstdint>
       7             : #include <vector>
       8             : 
       9             : #include "Domain/Creators/Factory3D.hpp"
      10             : #include "Domain/Tags.hpp"
      11             : #include "Evolution/Actions/RunEventsAndDenseTriggers.hpp"
      12             : #include "Evolution/Actions/RunEventsAndTriggers.hpp"
      13             : #include "Evolution/BoundaryCorrection.hpp"
      14             : #include "Evolution/ComputeTags.hpp"
      15             : #include "Evolution/Conservative/UpdateConservatives.hpp"
      16             : #include "Evolution/Conservative/UpdatePrimitives.hpp"
      17             : #include "Evolution/DgSubcell/Actions/Initialize.hpp"
      18             : #include "Evolution/DgSubcell/Actions/Labels.hpp"
      19             : #include "Evolution/DgSubcell/Actions/ReconstructionCommunication.hpp"
      20             : #include "Evolution/DgSubcell/Actions/SelectNumericalMethod.hpp"
      21             : #include "Evolution/DgSubcell/Actions/TakeTimeStep.hpp"
      22             : #include "Evolution/DgSubcell/Actions/TciAndRollback.hpp"
      23             : #include "Evolution/DgSubcell/Actions/TciAndSwitchToDg.hpp"
      24             : #include "Evolution/DgSubcell/BackgroundGrVars.hpp"
      25             : #include "Evolution/DgSubcell/CartesianFluxDivergence.hpp"
      26             : #include "Evolution/DgSubcell/CellCenteredFlux.hpp"
      27             : #include "Evolution/DgSubcell/ComputeBoundaryTerms.hpp"
      28             : #include "Evolution/DgSubcell/CorrectPackagedData.hpp"
      29             : #include "Evolution/DgSubcell/DisableLts.hpp"
      30             : #include "Evolution/DgSubcell/GetTciDecision.hpp"
      31             : #include "Evolution/DgSubcell/NeighborReconstructedFaceSolution.hpp"
      32             : #include "Evolution/DgSubcell/NeighborTciDecision.hpp"
      33             : #include "Evolution/DgSubcell/PerssonTci.hpp"
      34             : #include "Evolution/DgSubcell/PrepareNeighborData.hpp"
      35             : #include "Evolution/DgSubcell/SetInterpolators.hpp"
      36             : #include "Evolution/DgSubcell/Tags/MethodOrder.hpp"
      37             : #include "Evolution/DgSubcell/Tags/ObserverCoordinates.hpp"
      38             : #include "Evolution/DgSubcell/Tags/ObserverMesh.hpp"
      39             : #include "Evolution/DgSubcell/Tags/TciStatus.hpp"
      40             : #include "Evolution/DgSubcell/TwoMeshRdmpTci.hpp"
      41             : #include "Evolution/DiscontinuousGalerkin/Actions/ApplyBoundaryCorrections.hpp"
      42             : #include "Evolution/DiscontinuousGalerkin/Actions/ComputeTimeDerivative.hpp"
      43             : #include "Evolution/DiscontinuousGalerkin/BackgroundGrVars.hpp"
      44             : #include "Evolution/DiscontinuousGalerkin/CleanMortarHistory.hpp"
      45             : #include "Evolution/DiscontinuousGalerkin/DgElementArray.hpp"
      46             : #include "Evolution/DiscontinuousGalerkin/Initialization/Mortars.hpp"
      47             : #include "Evolution/DiscontinuousGalerkin/Initialization/QuadratureTag.hpp"
      48             : #include "Evolution/DiscontinuousGalerkin/Limiters/Krivodonova.hpp"
      49             : #include "Evolution/DiscontinuousGalerkin/Limiters/Minmod.hpp"
      50             : #include "Evolution/DiscontinuousGalerkin/Limiters/Tags.hpp"
      51             : #include "Evolution/DiscontinuousGalerkin/Limiters/Weno.hpp"
      52             : #include "Evolution/Initialization/ConservativeSystem.hpp"
      53             : #include "Evolution/Initialization/DgDomain.hpp"
      54             : #include "Evolution/Initialization/Evolution.hpp"
      55             : #include "Evolution/Initialization/Limiter.hpp"
      56             : #include "Evolution/Initialization/SetVariables.hpp"
      57             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/AllSolutions.hpp"
      58             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/BoundaryConditions/Factory.hpp"
      59             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/BoundaryCorrections/Factory.hpp"
      60             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/ComovingMagneticFieldMagnitude.hpp"
      61             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/FiniteDifference/Factory.hpp"
      62             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/FiniteDifference/RegisterDerivedWithCharm.hpp"
      63             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/FiniteDifference/Tag.hpp"
      64             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/FixConservatives.hpp"
      65             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Flattener.hpp"
      66             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Fluxes.hpp"
      67             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/KastaunEtAl.hpp"
      68             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/NewmanHamlin.hpp"
      69             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/PalenzuelaEtAl.hpp"
      70             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/QuadrupoleFormula.hpp"
      71             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/SetVariablesNeededFixingToFalse.hpp"
      72             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/FixConservativesAndComputePrims.hpp"
      73             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/NeighborPackagedData.hpp"
      74             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/PrimitiveGhostData.hpp"
      75             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/PrimsAfterRollback.hpp"
      76             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/ResizeAndComputePrimitives.hpp"
      77             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/SetInitialRdmpData.hpp"
      78             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/SwapGrTags.hpp"
      79             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/TciOnDgGrid.hpp"
      80             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/TciOnFdGrid.hpp"
      81             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/TimeDerivative.hpp"
      82             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/System.hpp"
      83             : #include "Evolution/Systems/GrMhd/ValenciaDivClean/Tags.hpp"
      84             : #include "Evolution/VariableFixing/Actions.hpp"
      85             : #include "Evolution/VariableFixing/FixToAtmosphere.hpp"
      86             : #include "Evolution/VariableFixing/ParameterizedDeleptonization.hpp"
      87             : #include "Evolution/VariableFixing/Tags.hpp"
      88             : #include "IO/Observer/Actions/RegisterEvents.hpp"
      89             : #include "IO/Observer/Helpers.hpp"
      90             : #include "IO/Observer/ObserverComponent.hpp"
      91             : #include "NumericalAlgorithms/DiscontinuousGalerkin/Formulation.hpp"
      92             : #include "NumericalAlgorithms/DiscontinuousGalerkin/Tags.hpp"
      93             : #include "NumericalAlgorithms/FiniteDifference/Minmod.hpp"
      94             : #include "NumericalAlgorithms/LinearOperators/Divergence.hpp"
      95             : #include "Options/Protocols/FactoryCreation.hpp"
      96             : #include "Options/String.hpp"
      97             : #include "Parallel/Algorithms/AlgorithmSingleton.hpp"
      98             : #include "Parallel/Local.hpp"
      99             : #include "Parallel/Phase.hpp"
     100             : #include "Parallel/PhaseControl/CheckpointAndExitAfterWallclock.hpp"
     101             : #include "Parallel/PhaseControl/ExecutePhaseChange.hpp"
     102             : #include "Parallel/PhaseControl/Factory.hpp"
     103             : #include "Parallel/PhaseControl/VisitAndReturn.hpp"
     104             : #include "Parallel/PhaseDependentActionList.hpp"
     105             : #include "Parallel/Protocols/RegistrationMetavariables.hpp"
     106             : #include "ParallelAlgorithms/Actions/AddComputeTags.hpp"
     107             : #include "ParallelAlgorithms/Actions/AddSimpleTags.hpp"
     108             : #include "ParallelAlgorithms/Actions/InitializeItems.hpp"
     109             : #include "ParallelAlgorithms/Actions/LimiterActions.hpp"
     110             : #include "ParallelAlgorithms/Actions/MutateApply.hpp"
     111             : #include "ParallelAlgorithms/Actions/TerminatePhase.hpp"
     112             : #include "ParallelAlgorithms/Events/Completion.hpp"
     113             : #include "ParallelAlgorithms/Events/Factory.hpp"
     114             : #include "ParallelAlgorithms/Events/ObserveNorms.hpp"
     115             : #include "ParallelAlgorithms/Events/Tags.hpp"
     116             : #include "ParallelAlgorithms/EventsAndDenseTriggers/DenseTrigger.hpp"
     117             : #include "ParallelAlgorithms/EventsAndDenseTriggers/DenseTriggers/Factory.hpp"
     118             : #include "ParallelAlgorithms/EventsAndTriggers/Actions/RunEventsOnFailure.hpp"
     119             : #include "ParallelAlgorithms/EventsAndTriggers/Event.hpp"
     120             : #include "ParallelAlgorithms/EventsAndTriggers/EventsAndTriggers.hpp"
     121             : #include "ParallelAlgorithms/EventsAndTriggers/LogicalTriggers.hpp"
     122             : #include "ParallelAlgorithms/EventsAndTriggers/Trigger.hpp"
     123             : #include "ParallelAlgorithms/Interpolation/Actions/ElementInitInterpPoints.hpp"
     124             : #include "ParallelAlgorithms/Interpolation/Actions/InitializeInterpolationTarget.hpp"
     125             : #include "ParallelAlgorithms/Interpolation/Callbacks/ObserveTimeSeriesOnSurface.hpp"
     126             : #include "ParallelAlgorithms/Interpolation/Events/Interpolate.hpp"
     127             : #include "ParallelAlgorithms/Interpolation/Events/InterpolateWithoutInterpComponent.hpp"
     128             : #include "ParallelAlgorithms/Interpolation/InterpolationTarget.hpp"
     129             : #include "ParallelAlgorithms/Interpolation/Protocols/InterpolationTargetTag.hpp"
     130             : #include "ParallelAlgorithms/Interpolation/Tags.hpp"
     131             : #include "ParallelAlgorithms/Interpolation/Targets/KerrHorizon.hpp"
     132             : #include "ParallelAlgorithms/Interpolation/Targets/SpecifiedPoints.hpp"
     133             : #include "PointwiseFunctions/AnalyticData/AnalyticData.hpp"
     134             : #include "PointwiseFunctions/AnalyticData/GrMhd/BlastWave.hpp"
     135             : #include "PointwiseFunctions/AnalyticData/GrMhd/BondiHoyleAccretion.hpp"
     136             : #include "PointwiseFunctions/AnalyticData/GrMhd/CcsnCollapse.hpp"
     137             : #include "PointwiseFunctions/AnalyticData/GrMhd/KhInstability.hpp"
     138             : #include "PointwiseFunctions/AnalyticData/GrMhd/MagneticFieldLoop.hpp"
     139             : #include "PointwiseFunctions/AnalyticData/GrMhd/MagneticRotor.hpp"
     140             : #include "PointwiseFunctions/AnalyticData/GrMhd/MagnetizedFmDisk.hpp"
     141             : #include "PointwiseFunctions/AnalyticData/GrMhd/MagnetizedTovStar.hpp"
     142             : #include "PointwiseFunctions/AnalyticData/GrMhd/OrszagTangVortex.hpp"
     143             : #include "PointwiseFunctions/AnalyticData/GrMhd/PolarMagnetizedFmDisk.hpp"
     144             : #include "PointwiseFunctions/AnalyticData/GrMhd/RiemannProblem.hpp"
     145             : #include "PointwiseFunctions/AnalyticData/GrMhd/SlabJet.hpp"
     146             : #include "PointwiseFunctions/AnalyticData/Tags.hpp"
     147             : #include "PointwiseFunctions/AnalyticSolutions/AnalyticSolution.hpp"
     148             : #include "PointwiseFunctions/AnalyticSolutions/GrMhd/AlfvenWave.hpp"
     149             : #include "PointwiseFunctions/AnalyticSolutions/GrMhd/BondiMichel.hpp"
     150             : #include "PointwiseFunctions/AnalyticSolutions/GrMhd/KomissarovShock.hpp"
     151             : #include "PointwiseFunctions/AnalyticSolutions/GrMhd/SmoothFlow.hpp"
     152             : #include "PointwiseFunctions/AnalyticSolutions/RelativisticEuler/FishboneMoncriefDisk.hpp"
     153             : #include "PointwiseFunctions/AnalyticSolutions/RelativisticEuler/RotatingStar.hpp"
     154             : #include "PointwiseFunctions/AnalyticSolutions/RelativisticEuler/TovStar.hpp"
     155             : #include "PointwiseFunctions/AnalyticSolutions/Tags.hpp"
     156             : #include "PointwiseFunctions/GeneralRelativity/Surfaces/Tags.hpp"
     157             : #include "PointwiseFunctions/Hydro/EquationsOfState/Factory.hpp"
     158             : #include "PointwiseFunctions/Hydro/EquationsOfState/RegisterDerivedWithCharm.hpp"
     159             : #include "PointwiseFunctions/Hydro/InversePlasmaBeta.hpp"
     160             : #include "PointwiseFunctions/Hydro/MassFlux.hpp"
     161             : #include "PointwiseFunctions/Hydro/QuadrupoleFormula.hpp"
     162             : #include "PointwiseFunctions/Hydro/Tags.hpp"
     163             : #include "PointwiseFunctions/Hydro/TransportVelocity.hpp"
     164             : #include "Time/Actions/SelfStartActions.hpp"
     165             : #include "Time/AdvanceTime.hpp"
     166             : #include "Time/ChangeSlabSize/Action.hpp"
     167             : #include "Time/ChangeStepSize.hpp"
     168             : #include "Time/ChangeTimeStepperOrder.hpp"
     169             : #include "Time/CleanHistory.hpp"
     170             : #include "Time/RecordTimeStepperData.hpp"
     171             : #include "Time/StepChoosers/Factory.hpp"
     172             : #include "Time/StepChoosers/FixedLtsRatio.hpp"
     173             : #include "Time/StepChoosers/StepChooser.hpp"
     174             : #include "Time/Tags/Time.hpp"
     175             : #include "Time/Tags/TimeStepId.hpp"
     176             : #include "Time/TimeSequence.hpp"
     177             : #include "Time/TimeSteppers/Factory.hpp"
     178             : #include "Time/TimeSteppers/LtsTimeStepper.hpp"
     179             : #include "Time/TimeSteppers/TimeStepper.hpp"
     180             : #include "Time/Triggers/TimeTriggers.hpp"
     181             : #include "Time/UpdateU.hpp"
     182             : #include "Utilities/Functional.hpp"
     183             : #include "Utilities/ProtocolHelpers.hpp"
     184             : #include "Utilities/TMPL.hpp"
     185             : 
     186             : /// \cond
     187             : namespace Frame {
     188             : struct Inertial;
     189             : }  // namespace Frame
     190             : namespace PUP {
     191             : class er;
     192             : }  // namespace PUP
     193             : namespace Parallel {
     194             : template <typename Metavariables>
     195             : class CProxy_GlobalCache;
     196             : }  // namespace Parallel
     197             : /// \endcond
     198             : 
     199             : template <typename InterpolationTargetTags, bool UseParametrizedDeleptonization>
     200             : struct EvolutionMetavars;
     201             : 
     202             : template <typename... InterpolationTargetTags,
     203             :           bool UseParametrizedDeleptonization>
     204           0 : struct EvolutionMetavars<tmpl::list<InterpolationTargetTags...>,
     205             :                          UseParametrizedDeleptonization> {
     206             :   // The use_dg_subcell flag controls whether to use "standard" limiting (false)
     207             :   // or a DG-FD hybrid scheme (true).
     208           0 :   static constexpr bool use_parametrized_deleptonization =
     209             :       UseParametrizedDeleptonization;
     210           0 :   static constexpr bool use_dg_subcell = true;
     211           0 :   static constexpr size_t volume_dim = 3;
     212           0 :   using initial_data_list =
     213             :       grmhd::ValenciaDivClean::InitialData::initial_data_list;
     214             : 
     215             :   // Boolean verifying if parameterized deleptonization will be active.  This
     216             :   // will only be active for CCSN evolution.
     217           0 :   using parameterized_deleptonization =
     218             :       tmpl::conditional_t<UseParametrizedDeleptonization,
     219             :                           VariableFixing::Actions::FixVariables<
     220             :                               VariableFixing::ParameterizedDeleptonization>,
     221             :                           tmpl::list<>>;
     222           0 :   using eos_base = EquationsOfState::EquationOfState<true, 3>;
     223           0 :   using equation_of_state_type = typename std::unique_ptr<eos_base>;
     224           0 :   using initial_data_tag = evolution::initial_data::Tags::InitialData;
     225           0 :   using system = grmhd::ValenciaDivClean::System;
     226           0 :   using temporal_id = Tags::TimeStepId;
     227           0 :   using TimeStepperBase = TimeStepper;
     228             : 
     229           0 :   static constexpr bool local_time_stepping =
     230             :       TimeStepperBase::local_time_stepping;
     231           0 :   static constexpr bool use_dg_element_collection = false;
     232             : 
     233           0 :   using analytic_variables_tags =
     234             :       typename system::primitive_variables_tag::tags_list;
     235           0 :   using equation_of_state_tag = hydro::Tags::GrmhdEquationOfState;
     236             :   // Do not limit the divergence-cleaning field Phi
     237           0 :   using limiter = Tags::Limiter<
     238             :       Limiters::Minmod<3, tmpl::list<grmhd::ValenciaDivClean::Tags::TildeD,
     239             :                                      grmhd::ValenciaDivClean::Tags::TildeYe,
     240             :                                      grmhd::ValenciaDivClean::Tags::TildeTau,
     241             :                                      grmhd::ValenciaDivClean::Tags::TildeS<>,
     242             :                                      grmhd::ValenciaDivClean::Tags::TildeB<>>>>;
     243             : 
     244           0 :   using interpolator_source_vars =
     245             :       tmpl::remove_duplicates<tmpl::flatten<tmpl::list<
     246             :           typename InterpolationTargetTags::vars_to_interpolate_to_target...>>>;
     247             : 
     248           0 :   using ordered_list_of_primitive_recovery_schemes = tmpl::list<
     249             :       grmhd::ValenciaDivClean::PrimitiveRecoverySchemes::KastaunEtAl,
     250             :       grmhd::ValenciaDivClean::PrimitiveRecoverySchemes::NewmanHamlin,
     251             :       grmhd::ValenciaDivClean::PrimitiveRecoverySchemes::PalenzuelaEtAl>;
     252             : 
     253           0 :   using interpolation_target_tags = tmpl::list<InterpolationTargetTags...>;
     254             : 
     255           0 :   using analytic_compute = evolution::Tags::AnalyticSolutionsCompute<
     256             :       volume_dim, analytic_variables_tags, use_dg_subcell, initial_data_list>;
     257           0 :   using error_compute = Tags::ErrorsCompute<analytic_variables_tags>;
     258           0 :   using error_tags = db::wrap_tags_in<Tags::Error, analytic_variables_tags>;
     259           0 :   using observe_fields = tmpl::push_back<
     260             :       tmpl::append<
     261             :           typename system::variables_tag::tags_list,
     262             :           typename system::primitive_variables_tag::tags_list,
     263             :           typename system::flux_spacetime_variables_tag::tags_list,
     264             :           tmpl::list<
     265             :               grmhd::ValenciaDivClean::Tags::
     266             :                   ComovingMagneticFieldMagnitudeCompute,
     267             :               ::Tags::DivVectorCompute<
     268             :                   hydro::Tags::MagneticField<DataVector, volume_dim>,
     269             :                   ::Events::Tags::ObserverMesh<volume_dim>,
     270             :                   ::Events::Tags::ObserverInverseJacobian<
     271             :                       volume_dim, Frame::ElementLogical, Frame::Inertial>>>,
     272             :           error_tags,
     273             :           tmpl::conditional_t<
     274             :               use_dg_subcell,
     275             :               tmpl::list<
     276             :                   evolution::dg::subcell::Tags::TciStatusCompute<volume_dim>,
     277             :                   evolution::dg::subcell::Tags::MethodOrderCompute<volume_dim>>,
     278             :               tmpl::list<>>>,
     279             :       tmpl::conditional_t<
     280             :           use_dg_subcell,
     281             :           evolution::dg::subcell::Tags::ObserverCoordinatesCompute<
     282             :               volume_dim, Frame::ElementLogical>,
     283             :           ::Events::Tags::ObserverCoordinatesCompute<volume_dim,
     284             :                                                      Frame::ElementLogical>>,
     285             :       tmpl::conditional_t<
     286             :           use_dg_subcell,
     287             :           evolution::dg::subcell::Tags::ObserverCoordinatesCompute<volume_dim,
     288             :                                                                    Frame::Grid>,
     289             :           ::Events::Tags::ObserverCoordinatesCompute<volume_dim, Frame::Grid>>,
     290             :       tmpl::conditional_t<
     291             :           use_dg_subcell,
     292             :           evolution::dg::subcell::Tags::ObserverCoordinatesCompute<
     293             :               volume_dim, Frame::Inertial>,
     294             :           ::Events::Tags::ObserverCoordinatesCompute<volume_dim,
     295             :                                                      Frame::Inertial>>,
     296             :       grmhd::ValenciaDivClean::Tags::QuadrupoleMomentCompute<
     297             :           DataVector, volume_dim,
     298             :           ::Events::Tags::ObserverCoordinates<volume_dim, Frame::Inertial>>,
     299             :       grmhd::ValenciaDivClean::Tags::QuadrupoleMomentDerivativeCompute<
     300             :           DataVector, volume_dim,
     301             :           ::Events::Tags::ObserverCoordinates<volume_dim, Frame::Inertial>,
     302             :           hydro::Tags::SpatialVelocity<DataVector, volume_dim,
     303             :                                        Frame::Inertial>>,
     304             :       hydro::Tags::TransportVelocityCompute<DataVector, volume_dim,
     305             :                                             Frame::Inertial>,
     306             :       grmhd::ValenciaDivClean::Tags::QuadrupoleMomentDerivativeCompute<
     307             :           DataVector, volume_dim,
     308             :           ::Events::Tags::ObserverCoordinates<volume_dim, Frame::Inertial>,
     309             :           hydro::Tags::TransportVelocity<DataVector, volume_dim,
     310             :                                          Frame::Inertial>>,
     311             :       hydro::Tags::InversePlasmaBetaCompute<DataVector>>;
     312           0 :   using non_tensor_compute_tags = tmpl::list<
     313             :       tmpl::conditional_t<
     314             :           use_dg_subcell,
     315             :           tmpl::list<
     316             :               evolution::dg::subcell::Tags::ObserverMeshCompute<volume_dim>,
     317             :               evolution::dg::subcell::Tags::ObserverInverseJacobianCompute<
     318             :                   volume_dim, Frame::ElementLogical, Frame::Inertial>,
     319             :               evolution::dg::subcell::Tags::
     320             :                   ObserverJacobianAndDetInvJacobianCompute<
     321             :                       volume_dim, Frame::ElementLogical, Frame::Inertial>>,
     322             :           tmpl::list<::Events::Tags::ObserverMeshCompute<volume_dim>,
     323             :                      ::Events::Tags::ObserverInverseJacobianCompute<
     324             :                          volume_dim, Frame::ElementLogical, Frame::Inertial>,
     325             :                      ::Events::Tags::ObserverJacobianCompute<
     326             :                          volume_dim, Frame::ElementLogical, Frame::Inertial>,
     327             :                      ::Events::Tags::ObserverDetInvJacobianCompute<
     328             :                          Frame::ElementLogical, Frame::Inertial>>>,
     329             :       analytic_compute, error_compute>;
     330             : 
     331           0 :   struct factory_creation
     332             :       : tt::ConformsTo<Options::protocols::FactoryCreation> {
     333           0 :     using factory_classes = tmpl::map<
     334             :         tmpl::pair<DenseTrigger, DenseTriggers::standard_dense_triggers>,
     335             :         tmpl::pair<DomainCreator<volume_dim>, domain_creators<volume_dim>>,
     336             :         tmpl::pair<
     337             :             Event,
     338             :             tmpl::flatten<tmpl::list<
     339             :                 Events::Completion,
     340             :                 dg::Events::field_observations<volume_dim, observe_fields,
     341             :                                                non_tensor_compute_tags>,
     342             :                 Events::time_events<system>,
     343             :                 intrp::Events::InterpolateWithoutInterpComponent<
     344             :                     3, InterpolationTargetTags, interpolator_source_vars>...>>>,
     345             :         tmpl::pair<evolution::BoundaryCorrection,
     346             :                    grmhd::ValenciaDivClean::BoundaryCorrections::
     347             :                        standard_boundary_corrections>,
     348             :         tmpl::pair<evolution::initial_data::InitialData, initial_data_list>,
     349             :         tmpl::pair<
     350             :             grmhd::ValenciaDivClean::BoundaryConditions::BoundaryCondition,
     351             :             grmhd::ValenciaDivClean::BoundaryConditions::
     352             :                 standard_boundary_conditions>,
     353             :         tmpl::pair<
     354             :             grmhd::AnalyticData::InitialMagneticFields::InitialMagneticField,
     355             :             grmhd::AnalyticData::InitialMagneticFields::
     356             :                 initial_magnetic_fields>,
     357             :         tmpl::pair<LtsTimeStepper, TimeSteppers::lts_time_steppers>,
     358             :         tmpl::pair<PhaseChange, PhaseControl::factory_creatable_classes>,
     359             :         tmpl::pair<StepChooser<StepChooserUse::LtsStep>,
     360             :                    StepChoosers::standard_step_choosers<system>>,
     361             :         tmpl::pair<StepChooser<StepChooserUse::Slab>,
     362             :                    tmpl::append<StepChoosers::standard_slab_choosers<
     363             :                                     system, local_time_stepping>,
     364             :                                 tmpl::conditional_t<
     365             :                                     use_dg_subcell and local_time_stepping,
     366             :                                     tmpl::list<StepChoosers::FixedLtsRatio>,
     367             :                                     tmpl::list<>>>>,
     368             :         tmpl::pair<TimeSequence<double>,
     369             :                    TimeSequences::all_time_sequences<double>>,
     370             :         tmpl::pair<TimeSequence<std::uint64_t>,
     371             :                    TimeSequences::all_time_sequences<std::uint64_t>>,
     372             :         tmpl::pair<TimeStepper, TimeSteppers::time_steppers>,
     373             :         tmpl::pair<Trigger, tmpl::append<Triggers::logical_triggers,
     374             :                                          Triggers::time_triggers>>>;
     375             :   };
     376             : 
     377           0 :   using observed_reduction_data_tags = observers::collect_reduction_data_tags<
     378             :       tmpl::at<typename factory_creation::factory_classes, Event>>;
     379             : 
     380           0 :   struct SubcellOptions {
     381           0 :     using evolved_vars_tags = typename system::variables_tag::tags_list;
     382           0 :     using prim_tags = typename system::primitive_variables_tag::tags_list;
     383           0 :     using recons_prim_tags = tmpl::push_back<
     384             :         prim_tags,
     385             :         hydro::Tags::LorentzFactorTimesSpatialVelocity<DataVector, 3>>;
     386           0 :     using fluxes_tags =
     387             :         db::wrap_tags_in<Tags::Flux, evolved_vars_tags,
     388             :                          tmpl::size_t<volume_dim>, Frame::Inertial>;
     389             : 
     390           0 :     static constexpr bool subcell_enabled = use_dg_subcell;
     391           0 :     static constexpr bool subcell_enabled_at_external_boundary = true;
     392             : 
     393             :     // We send `ghost_zone_size` cell-centered grid points for variable
     394             :     // reconstruction, of which we need `ghost_zone_size-1` for reconstruction
     395             :     // to the internal side of the element face, and `ghost_zone_size` for
     396             :     // reconstruction to the external side of the element face.
     397             :     template <typename DbTagsList>
     398           0 :     static constexpr size_t ghost_zone_size(
     399             :         const db::DataBox<DbTagsList>& box) {
     400             :       return db::get<grmhd::ValenciaDivClean::fd::Tags::Reconstructor>(box)
     401             :           .ghost_zone_size();
     402             :     }
     403             : 
     404           0 :     using DgComputeSubcellNeighborPackagedData =
     405             :         grmhd::ValenciaDivClean::subcell::NeighborPackagedData;
     406             : 
     407           0 :     using GhostVariables =
     408             :         grmhd::ValenciaDivClean::subcell::PrimitiveGhostVariables;
     409             :   };
     410             : 
     411           0 :   using events_and_dense_triggers_dg_postprocessors =
     412             :       tmpl::list<AlwaysReadyPostprocessor<system::primitive_from_conservative<
     413             :           ordered_list_of_primitive_recovery_schemes>>>;
     414             : 
     415           0 :   using events_and_dense_triggers_subcell_postprocessors =
     416             :       tmpl::list<AlwaysReadyPostprocessor<
     417             :           grmhd::ValenciaDivClean::subcell::FixConservativesAndComputePrims<
     418             :               ordered_list_of_primitive_recovery_schemes>>>;
     419             : 
     420           0 :   using dg_step_actions = tmpl::flatten<tmpl::list<
     421             :       Actions::MutateApply<
     422             :           evolution::dg::BackgroundGrVars<system, EvolutionMetavars>>,
     423             :       evolution::dg::Actions::ComputeTimeDerivative<
     424             :           volume_dim, system, AllStepChoosers, local_time_stepping,
     425             :           use_dg_element_collection>,
     426             :       evolution::dg::Actions::ApplyBoundaryCorrectionsToTimeDerivative<
     427             :           volume_dim, use_dg_element_collection>,
     428             :       Actions::MutateApply<RecordTimeStepperData<system>>,
     429             :       tmpl::conditional_t<
     430             :           local_time_stepping,
     431             :           tmpl::list<
     432             :               evolution::Actions::RunEventsAndDenseTriggers<
     433             :                   tmpl::push_front<events_and_dense_triggers_dg_postprocessors,
     434             :                                    evolution::dg::ApplyBoundaryCorrections<
     435             :                                        local_time_stepping, EvolutionMetavars,
     436             :                                        volume_dim, true>>>,
     437             :               Actions::MutateApply<UpdateU<system, local_time_stepping>>,
     438             :               evolution::dg::Actions::ApplyLtsBoundaryCorrections<
     439             :                   volume_dim, false, use_dg_element_collection>,
     440             :               Actions::MutateApply<ChangeTimeStepperOrder<system>>>,
     441             :           tmpl::list<
     442             :               evolution::Actions::RunEventsAndDenseTriggers<
     443             :                   events_and_dense_triggers_dg_postprocessors>,
     444             :               Actions::MutateApply<UpdateU<system, local_time_stepping>>>>,
     445             :       tmpl::conditional_t<
     446             :           use_dg_subcell,
     447             :           // Note: The primitive variables are computed as part of the TCI.
     448             :           evolution::dg::subcell::Actions::TciAndRollback<
     449             :               grmhd::ValenciaDivClean::subcell::TciOnDgGrid<
     450             :                   tmpl::front<ordered_list_of_primitive_recovery_schemes>>>,
     451             :           tmpl::list<>>,
     452             :       Actions::MutateApply<CleanHistory<system>>,
     453             :       tmpl::conditional_t<
     454             :           local_time_stepping,
     455             :           Actions::MutateApply<evolution::dg::CleanMortarHistory<volume_dim>>,
     456             :           tmpl::list<>>,
     457             :       tmpl::conditional_t<
     458             :           use_dg_subcell,
     459             :           tmpl::list<>,
     460             :           tmpl::list<Limiters::Actions::SendData<EvolutionMetavars>,
     461             :                      Limiters::Actions::Limit<EvolutionMetavars>,
     462             :                      VariableFixing::Actions::FixVariables<
     463             :                          grmhd::ValenciaDivClean::Flattener<
     464             :                              ordered_list_of_primitive_recovery_schemes>>>>,
     465             :       parameterized_deleptonization,
     466             :       VariableFixing::Actions::FixVariables<
     467             :           VariableFixing::FixToAtmosphere<volume_dim>>,
     468             :       Actions::UpdateConservatives>>;
     469             : 
     470           0 :   using dg_subcell_step_actions = tmpl::flatten<tmpl::list<
     471             :       evolution::dg::subcell::Actions::SelectNumericalMethod,
     472             : 
     473             :       Actions::Label<evolution::dg::subcell::Actions::Labels::BeginDg>,
     474             :       dg_step_actions,
     475             :       Actions::Goto<evolution::dg::subcell::Actions::Labels::EndOfSolvers>,
     476             : 
     477             :       Actions::Label<evolution::dg::subcell::Actions::Labels::BeginSubcell>,
     478             :       tmpl::conditional_t<local_time_stepping,
     479             :                           // This is just to adjust for FixedLtsRatio, so we
     480             :                           // can pass an empty list of StepChoosers.
     481             :                           Actions::MutateApply<ChangeStepSize<tmpl::list<>>>,
     482             :                           tmpl::list<>>,
     483             :       Actions::MutateApply<evolution::dg::subcell::BackgroundGrVars<
     484             :           system, EvolutionMetavars, false>>,
     485             :       Actions::MutateApply<evolution::dg::subcell::fd::CellCenteredFlux<
     486             :           system, grmhd::ValenciaDivClean::ComputeFluxes, volume_dim, false>>,
     487             :       evolution::dg::subcell::Actions::SendDataForReconstruction<
     488             :           volume_dim, grmhd::ValenciaDivClean::subcell::PrimitiveGhostVariables,
     489             :           use_dg_element_collection>,
     490             :       evolution::dg::subcell::Actions::ReceiveAndSendDataForReconstruction<
     491             :           volume_dim, grmhd::ValenciaDivClean::subcell::PrimitiveGhostVariables,
     492             :           use_dg_element_collection>,
     493             :       evolution::dg::subcell::Actions::ReceiveDataForReconstruction<volume_dim>,
     494             :       Actions::Label<
     495             :           evolution::dg::subcell::Actions::Labels::BeginSubcellAfterDgRollback>,
     496             :       Actions::MutateApply<evolution::dg::subcell::BackgroundGrVars<
     497             :           system, EvolutionMetavars, true>>,
     498             :       Actions::MutateApply<grmhd::ValenciaDivClean::subcell::SwapGrTags>,
     499             :       Actions::MutateApply<grmhd::ValenciaDivClean::subcell::PrimsAfterRollback<
     500             :           ordered_list_of_primitive_recovery_schemes>>,
     501             :       Actions::MutateApply<evolution::dg::subcell::fd::CellCenteredFlux<
     502             :           system, grmhd::ValenciaDivClean::ComputeFluxes, volume_dim, true>>,
     503             :       evolution::dg::subcell::fd::Actions::TakeTimeStep<
     504             :           grmhd::ValenciaDivClean::subcell::TimeDerivative>,
     505             :       Actions::MutateApply<RecordTimeStepperData<system>>,
     506             :       evolution::Actions::RunEventsAndDenseTriggers<
     507             :           events_and_dense_triggers_subcell_postprocessors>,
     508             :       Actions::MutateApply<UpdateU<system, local_time_stepping>>,
     509             :       Actions::MutateApply<CleanHistory<system>>,
     510             :       tmpl::conditional_t<
     511             :           local_time_stepping,
     512             :           Actions::MutateApply<evolution::dg::CleanMortarHistory<volume_dim>>,
     513             :           tmpl::list<>>,
     514             :       Actions::MutateApply<
     515             :           grmhd::ValenciaDivClean::subcell::FixConservativesAndComputePrims<
     516             :               ordered_list_of_primitive_recovery_schemes>>,
     517             :       evolution::dg::subcell::Actions::TciAndSwitchToDg<
     518             :           grmhd::ValenciaDivClean::subcell::TciOnFdGrid>,
     519             :       Actions::MutateApply<grmhd::ValenciaDivClean::subcell::SwapGrTags>,
     520             :       Actions::MutateApply<
     521             :           grmhd::ValenciaDivClean::subcell::ResizeAndComputePrims<
     522             :               ordered_list_of_primitive_recovery_schemes>>,
     523             :       parameterized_deleptonization,
     524             :       VariableFixing::Actions::FixVariables<
     525             :           VariableFixing::FixToAtmosphere<volume_dim>>,
     526             :       Actions::UpdateConservatives,
     527             : 
     528             :       Actions::Label<evolution::dg::subcell::Actions::Labels::EndOfSolvers>>>;
     529             : 
     530           0 :   using step_actions =
     531             :       tmpl::conditional_t<use_dg_subcell, dg_subcell_step_actions,
     532             :                           dg_step_actions>;
     533             : 
     534           0 :   using dg_registration_list =
     535             :       tmpl::list<observers::Actions::RegisterEventsWithObservers>;
     536             : 
     537           0 :   using initialization_actions = tmpl::flatten<tmpl::list<
     538             :       Initialization::Actions::InitializeItems<
     539             :           Initialization::TimeStepping<EvolutionMetavars, TimeStepperBase>,
     540             :           evolution::dg::Initialization::Domain<EvolutionMetavars>,
     541             :           Initialization::TimeStepperHistory<EvolutionMetavars>>,
     542             :       Initialization::Actions::AddSimpleTags<
     543             :           evolution::dg::BackgroundGrVars<system, EvolutionMetavars>>,
     544             :       Initialization::Actions::ConservativeSystem<system>,
     545             : 
     546             :       tmpl::conditional_t<
     547             :           use_dg_subcell,
     548             :           tmpl::list<
     549             :               evolution::dg::subcell::Actions::SetSubcellGrid<volume_dim,
     550             :                                                               system, false>,
     551             :               Actions::MutateApply<evolution::dg::subcell::SetInterpolators<
     552             :                   volume_dim,
     553             :                   grmhd::ValenciaDivClean::fd::Tags::Reconstructor>>,
     554             :               Initialization::Actions::AddSimpleTags<
     555             :                   evolution::dg::subcell::BackgroundGrVars<
     556             :                       system, EvolutionMetavars, false>,
     557             :                   grmhd::ValenciaDivClean::SetVariablesNeededFixingToFalse>,
     558             :               Actions::MutateApply<
     559             :                   grmhd::ValenciaDivClean::subcell::SwapGrTags>,
     560             :               parameterized_deleptonization,
     561             :               VariableFixing::Actions::FixVariables<
     562             :                   VariableFixing::FixToAtmosphere<volume_dim>>,
     563             :               Actions::UpdateConservatives,
     564             :               evolution::dg::subcell::Actions::SetAndCommunicateInitialRdmpData<
     565             :                   volume_dim,
     566             :                   grmhd::ValenciaDivClean::subcell::SetInitialRdmpData>,
     567             :               evolution::dg::subcell::Actions::ComputeAndSendTciOnInitialGrid<
     568             :                   volume_dim, system,
     569             :                   grmhd::ValenciaDivClean::subcell::TciOnFdGrid>,
     570             :               evolution::dg::subcell::Actions::SetInitialGridFromTciData<
     571             :                   volume_dim, system>,
     572             :               Actions::MutateApply<
     573             :                   grmhd::ValenciaDivClean::subcell::SwapGrTags>,
     574             :               Actions::MutateApply<
     575             :                   grmhd::ValenciaDivClean::subcell::ResizeAndComputePrims<
     576             :                       ordered_list_of_primitive_recovery_schemes>>,
     577             :               parameterized_deleptonization,
     578             :               VariableFixing::Actions::FixVariables<
     579             :                   VariableFixing::FixToAtmosphere<volume_dim>>,
     580             :               Actions::UpdateConservatives>,
     581             :           tmpl::list<evolution::Initialization::Actions::SetVariables<
     582             :                          domain::Tags::Coordinates<3, Frame::ElementLogical>>,
     583             :                      parameterized_deleptonization,
     584             :                      VariableFixing::Actions::FixVariables<
     585             :                          VariableFixing::FixToAtmosphere<volume_dim>>,
     586             :                      Actions::UpdateConservatives>>,
     587             : 
     588             :       Initialization::Actions::AddComputeTags<
     589             :           StepChoosers::step_chooser_compute_tags<EvolutionMetavars,
     590             :                                                   local_time_stepping>>,
     591             :       ::evolution::dg::Initialization::Mortars<volume_dim>,
     592             :       tmpl::conditional_t<use_dg_subcell and local_time_stepping,
     593             :                           Initialization::Actions::InitializeItems<
     594             :                               evolution::dg::subcell::DisableLts<3>>,
     595             :                           tmpl::list<>>,
     596             :       tmpl::conditional_t<use_dg_subcell, tmpl::list<>,
     597             :                           Initialization::Actions::Minmod<3>>,
     598             :       evolution::Actions::InitializeRunEventsAndDenseTriggers,
     599             :       intrp::Actions::ElementInitInterpPoints<volume_dim,
     600             :                                               interpolation_target_tags>,
     601             :       Parallel::Actions::TerminatePhase>>;
     602             : 
     603           0 :   using dg_element_array_component = DgElementArray<
     604             :       EvolutionMetavars,
     605             :       tmpl::list<Parallel::PhaseActions<Parallel::Phase::Initialization,
     606             :                                         initialization_actions>,
     607             : 
     608             :                  Parallel::PhaseActions<
     609             :                      Parallel::Phase::InitializeTimeStepperHistory,
     610             :                      SelfStart::self_start_procedure<step_actions, system>>,
     611             : 
     612             :                  Parallel::PhaseActions<
     613             :                      Parallel::Phase::Register,
     614             :                      tmpl::push_back<dg_registration_list,
     615             :                                      Parallel::Actions::TerminatePhase>>,
     616             : 
     617             :                  Parallel::PhaseActions<
     618             :                      Parallel::Phase::Restart,
     619             :                      tmpl::push_back<dg_registration_list,
     620             :                                      Parallel::Actions::TerminatePhase>>,
     621             : 
     622             :           Parallel::PhaseActions<
     623             :               Parallel::Phase::WriteCheckpoint,
     624             :               tmpl::list<evolution::Actions::RunEventsAndTriggers<
     625             :                              Triggers::WhenToCheck::AtCheckpoints>,
     626             :                          Parallel::Actions::TerminatePhase>>,
     627             : 
     628             :           Parallel::PhaseActions<
     629             :               Parallel::Phase::Evolve,
     630             :               tmpl::flatten<tmpl::list<
     631             :                   std::conditional_t<local_time_stepping,
     632             :                                      evolution::Actions::RunEventsAndTriggers<
     633             :                                          Triggers::WhenToCheck::AtSteps>,
     634             :                                      tmpl::list<>>,
     635             :                   evolution::Actions::RunEventsAndTriggers<
     636             :                       Triggers::WhenToCheck::AtSlabs>,
     637             :                   Actions::ChangeSlabSize, step_actions,
     638             :                   Actions::MutateApply<AdvanceTime<>>,
     639             :                   PhaseControl::Actions::ExecutePhaseChange>>>,
     640             :           Parallel::PhaseActions<
     641             :               Parallel::Phase::PostFailureCleanup,
     642             :               tmpl::list<Actions::RunEventsOnFailure<Tags::Time>,
     643             :                          Parallel::Actions::TerminatePhase>>>>;
     644             : 
     645           0 :   struct registration
     646             :       : tt::ConformsTo<Parallel::protocols::RegistrationMetavariables> {
     647           0 :     using element_registrars =
     648             :         tmpl::map<tmpl::pair<dg_element_array_component, dg_registration_list>>;
     649             :   };
     650             : 
     651           0 :   using component_list = tmpl::list<
     652             :       observers::Observer<EvolutionMetavars>,
     653             :       observers::ObserverWriter<EvolutionMetavars>,
     654             :       intrp::InterpolationTarget<EvolutionMetavars, InterpolationTargetTags>...,
     655             :       dg_element_array_component>;
     656             : 
     657           0 :   using const_global_cache_tags = tmpl::push_back<
     658             :       tmpl::conditional_t<
     659             :           use_dg_subcell,
     660             :           tmpl::list<
     661             :               grmhd::ValenciaDivClean::fd::Tags::Reconstructor,
     662             :               ::Tags::VariableFixer<grmhd::ValenciaDivClean::FixConservatives>,
     663             :               grmhd::ValenciaDivClean::subcell::Tags::TciOptions>,
     664             :           tmpl::list<>>,
     665             :       grmhd::ValenciaDivClean::Tags::PrimitiveFromConservativeOptions,
     666             :       equation_of_state_tag, initial_data_tag,
     667             :       grmhd::ValenciaDivClean::Tags::ConstraintDampingParameter>;
     668             : 
     669           0 :   static constexpr Options::String help{
     670             :       "Evolve the Valencia formulation of the GRMHD system with divergence "
     671             :       "cleaning.\n\n"};
     672             : 
     673           0 :   static constexpr std::array<Parallel::Phase, 5> default_phase_order{
     674             :       {Parallel::Phase::Initialization,
     675             :        Parallel::Phase::InitializeTimeStepperHistory, Parallel::Phase::Register,
     676             :        Parallel::Phase::Evolve, Parallel::Phase::Exit}};
     677             : 
     678             :   // NOLINTNEXTLINE(google-runtime-references)
     679           0 :   void pup(PUP::er& /*p*/) {}
     680             : };
     681             : 
     682           0 : struct CenterOfStar : tt::ConformsTo<intrp::protocols::InterpolationTargetTag> {
     683           0 :   struct MaxOfScalar : db::SimpleTag {
     684           0 :     using type = double;
     685             :   };
     686             : 
     687             :   template <typename TagOfScalar>
     688           0 :   struct MaxOfScalarCompute : db::ComputeTag, MaxOfScalar {
     689           0 :     using base = MaxOfScalar;
     690           0 :     using return_type = double;
     691           0 :     static void function(const gsl::not_null<double*> max_of_scalar,
     692             :                          const Scalar<DataVector>& scalar) {
     693             :       *max_of_scalar = max(get(scalar));
     694             :     };
     695           0 :     using argument_tags = tmpl::list<TagOfScalar>;
     696             :   };
     697             : 
     698           0 :   using temporal_id = ::Tags::Time;
     699           0 :   using tags_to_observe =
     700             :       tmpl::list<MaxOfScalarCompute<hydro::Tags::RestMassDensity<DataVector>>>;
     701           0 :   using vars_to_interpolate_to_target =
     702             :       tmpl::list<hydro::Tags::RestMassDensity<DataVector>>;
     703           0 :   using post_interpolation_callbacks =
     704             :       tmpl::list<intrp::callbacks::ObserveTimeSeriesOnSurface<tags_to_observe,
     705             :                                                               CenterOfStar>>;
     706           0 :   using compute_target_points =
     707             :       intrp::TargetPoints::SpecifiedPoints<CenterOfStar, 3>;
     708           0 :   using compute_items_on_target = tags_to_observe;
     709             : 
     710             :   template <typename Metavariables>
     711           0 :   using interpolating_component =
     712             :       typename Metavariables::dg_element_array_component;
     713             : };
     714             : 
     715           0 : struct KerrHorizon : tt::ConformsTo<intrp::protocols::InterpolationTargetTag> {
     716           0 :   using temporal_id = ::Tags::Time;
     717           0 :   using tags_to_observe = tmpl::list<ylm::Tags::EuclideanSurfaceIntegralVector<
     718             :       hydro::Tags::MassFlux<DataVector, 3>, ::Frame::Inertial>>;
     719           0 :   using vars_to_interpolate_to_target =
     720             :       tmpl::list<hydro::Tags::RestMassDensity<DataVector>,
     721             :                  hydro::Tags::SpatialVelocity<DataVector, 3>,
     722             :                  hydro::Tags::LorentzFactor<DataVector>,
     723             :                  gr::Tags::Lapse<DataVector>, gr::Tags::Shift<DataVector, 3>,
     724             :                  gr::Tags::SqrtDetSpatialMetric<DataVector>>;
     725           0 :   using compute_items_on_target = tmpl::push_front<
     726             :       tags_to_observe,
     727             :       ylm::Tags::EuclideanAreaElementCompute<::Frame::Inertial>,
     728             :       hydro::Tags::MassFluxCompute<DataVector, 3, ::Frame::Inertial>>;
     729           0 :   using compute_target_points =
     730             :       intrp::TargetPoints::KerrHorizon<KerrHorizon, ::Frame::Inertial>;
     731           0 :   using post_interpolation_callbacks =
     732             :       tmpl::list<intrp::callbacks::ObserveTimeSeriesOnSurface<tags_to_observe,
     733             :                                                               KerrHorizon>>;
     734             : 
     735             :   template <typename Metavariables>
     736           0 :   using interpolating_component =
     737             :       typename Metavariables::dg_element_array_component;
     738             : };

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