Line data    Source code

       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include <cstddef>
       7             : #include <optional>
       8             : #include <tuple>
       9             : #include <utility>
      10             : 
      11             : #include "DataStructures/DataBox/DataBox.hpp"
      12             : #include "DataStructures/TaggedTuple.hpp"
      13             : #include "DataStructures/VariablesTag.hpp"
      14             : #include "Evolution/Initialization/Evolution.hpp"
      15             : #include "Evolution/Initialization/Tags.hpp"
      16             : #include "Evolution/Systems/Cce/OptionTags.hpp"
      17             : #include "Parallel/AlgorithmExecution.hpp"
      18             : #include "ParallelAlgorithms/Initialization/MutateAssign.hpp"
      19             : #include "Time/ChooseLtsStepSize.hpp"
      20             : #include "Time/LtsMode.hpp"
      21             : #include "Time/Slab.hpp"
      22             : #include "Time/Tags/AdaptiveSteppingDiagnostics.hpp"
      23             : #include "Time/Tags/LtsMode.hpp"
      24             : #include "Time/Tags/StepNumberWithinSlab.hpp"
      25             : #include "Time/Tags/Time.hpp"
      26             : #include "Time/Tags/TimeStep.hpp"
      27             : #include "Time/Tags/TimeStepId.hpp"
      28             : #include "Time/Tags/TimeStepper.hpp"
      29             : #include "Time/Time.hpp"
      30             : #include "Time/TimeStepId.hpp"
      31             : #include "Time/TimeSteppers/LtsTimeStepper.hpp"
      32             : #include "Time/TimeSteppers/TimeStepper.hpp"
      33             : #include "Utilities/Rational.hpp"
      34             : #include "Utilities/Requires.hpp"
      35             : #include "Utilities/TMPL.hpp"
      36             : 
      37             : namespace Cce {
      38             : namespace Actions {
      39             : 
      40             : /*!
      41             :  * \ingroup ActionsGroup
      42             :  * \brief Initializes the contents of the `CharacteristicEvolution` component
      43             :  * for performing the time evolution of the system, which is the singleton that
      44             :  * handles the main evolution system for CCE computations.
      45             :  *
      46             :  * \details Sets up the \ref DataBoxGroup to be ready to perform the
      47             :  * time-stepping associated with the CCE system.
      48             :  *
      49             :  * \ref DataBoxGroup changes:
      50             :  * - Modifies: nothing
      51             :  * - Adds:
      52             :  *  - `Tags::TimeStepId`
      53             :  *  - `Tags::Next<Tags::TimeStepId>`
      54             :  *  - `Tags::TimeStep`
      55             :  *  - `Tags::Time`
      56             :  *  - `Tags::AdaptiveSteppingDiagnostics`
      57             :  * - Removes: nothing
      58             :  */
      59           1 : struct InitializeCharacteristicEvolutionTime {
      60           0 :   using simple_tags_from_options =
      61             :       tmpl::list<Initialization::Tags::InitialSlabSize,
      62             :                  ::Initialization::Tags::InitialTimeDelta>;
      63             : 
      64           0 :   using const_global_cache_tags = tmpl::list<
      65             :       Tags::CceEvolutionPrefix<::Tags::ConcreteTimeStepper<LtsTimeStepper>>,
      66             :       Tags::CceEvolutionPrefix<::Tags::LtsModeForced<LtsMode::Conservative>>>;
      67             : 
      68           0 :   using simple_tags =
      69             :       tmpl::list<::Tags::TimeStepId, ::Tags::Next<::Tags::TimeStepId>,
      70             :                  ::Tags::TimeStep, ::Tags::Time, ::Tags::StepNumberWithinSlab,
      71             :                  ::Tags::AdaptiveSteppingDiagnostics>;
      72           0 :   using compute_tags =
      73             :       tmpl::transform<time_stepper_ref_tags<LtsTimeStepper>,
      74             :                       tmpl::bind<Tags::CceEvolutionPrefix, tmpl::_1>>;
      75             : 
      76             :   template <typename DbTags, typename... InboxTags, typename Metavariables,
      77             :             typename ArrayIndex, typename ActionList,
      78             :             typename ParallelComponent>
      79           0 :   static Parallel::iterable_action_return_t apply(
      80             :       db::DataBox<DbTags>& box,
      81             :       const tuples::TaggedTuple<InboxTags...>& /*inboxes*/,
      82             :       const Parallel::GlobalCache<Metavariables>& /*cache*/,
      83             :       const ArrayIndex& /*array_index*/, const ActionList /*meta*/,
      84             :       const ParallelComponent* const /*meta*/) {
      85             :     const auto& time_stepper =
      86             :         db::get<Tags::CceEvolutionPrefix<::Tags::TimeStepper<TimeStepper>>>(
      87             :             box);
      88             :     const double initial_time_value = db::get<Tags::StartTime>(box);
      89             : 
      90             :     double unused_slab_size_goal{};
      91             :     db::mutate_apply<
      92             :         tmpl::list<::Tags::Next<::Tags::TimeStepId>, ::Tags::TimeStep>,
      93             :         tmpl::list<>>(
      94             :         Initialization::TimeStepping<Metavariables, TimeStepper, false, true>{},
      95             :         make_not_null(&box), make_not_null(&unused_slab_size_goal),
      96             :         initial_time_value,
      97             :         db::get<::Initialization::Tags::InitialTimeDelta>(box),
      98             :         db::get<::Initialization::Tags::InitialSlabSize>(box), time_stepper,
      99             :         LtsMode::Conservative);
     100             : 
     101             :     Initialization::mutate_assign<tmpl::list<::Tags::TimeStepId, ::Tags::Time>>(
     102             :         make_not_null(&box), TimeStepId{}, initial_time_value);
     103             :     return {Parallel::AlgorithmExecution::Continue, std::nullopt};
     104             :   }
     105             : };
     106             : 
     107             : }  // namespace Actions
     108             : }  // namespace Cce