Base executable for MC

src/Evolution/Executables/RadiationTransport/CMakeLists.txt

@@ -2,3 +2,4 @@
 # See LICENSE.txt for details.
 
 add_subdirectory(M1Grey)
+add_subdirectory(MonteCarlo)

src/Evolution/Executables/RadiationTransport/MonteCarlo/CMakeLists.txt

@@ -0,0 +1,45 @@
+# Distributed under the MIT License.
+# See LICENSE.txt for details.
+
+set(EXECUTABLE EvolveMonteCarlo)
+
+add_spectre_executable(
+  ${EXECUTABLE}
+  EXCLUDE_FROM_ALL
+  EvolveMonteCarlo.cpp
+  )
+
+target_link_libraries(
+  ${EXECUTABLE}
+  PRIVATE
+  Actions
+  Charmxx::main
+  CoordinateMaps
+  DataStructures
+  DgSubcell
+  DiscontinuousGalerkin
+  DomainCreators
+  Events
+  EventsAndDenseTriggers
+  EventsAndTriggers
+  Evolution
+  GeneralRelativity
+  GeneralRelativitySolutions
+  GrMhdAnalyticData
+  GrMhdSolutions
+  H5
+  Hydro
+  Informer
+  LinearOperators
+  MathFunctions
+  MonteCarlo
+  Observer
+  Options
+  Parallel
+  PhaseControl
+  Serialization
+  Time
+  Utilities
+  ValenciaDivClean
+  )
+

src/Evolution/Executables/RadiationTransport/MonteCarlo/EvolveMonteCarlo.cpp

@@ -0,0 +1,33 @@
+// Distributed under the MIT License.
+// See LICENSE.txt for details.
+
+#include "Evolution/Executables/RadiationTransport/MonteCarlo/EvolveMonteCarlo.hpp"
+
+#include <vector>
+
+#include "Domain/Creators/RegisterDerivedWithCharm.hpp"
+#include "Domain/Creators/TimeDependence/RegisterDerivedWithCharm.hpp"
+#include "Domain/FunctionsOfTime/RegisterDerivedWithCharm.hpp"
+#include "Parallel/CharmMain.tpp"
+#include "PointwiseFunctions/Hydro/EquationsOfState/RegisterDerivedWithCharm.hpp"
+#include "Utilities/Serialization/RegisterDerivedClassesWithCharm.hpp"
+
+void register_neutrino_tables() {
+  register_classes_with_charm(
+      tmpl::list<Particles::MonteCarlo::NeutrinoInteractionTable<2, 2>,
+                 Particles::MonteCarlo::NeutrinoInteractionTable<2, 3>,
+                 Particles::MonteCarlo::NeutrinoInteractionTable<4, 3>,
+                 Particles::MonteCarlo::NeutrinoInteractionTable<16, 3>>{});
+}
+
+extern "C" void CkRegisterMainModule() {
+  Parallel::charmxx::register_main_module<EvolutionMetavars<4, 3>>();
+  Parallel::charmxx::register_init_node_and_proc(
+      {&domain::creators::register_derived_with_charm,
+       &domain::creators::time_dependence::register_derived_with_charm,
+       &domain::FunctionsOfTime::register_derived_with_charm,
+       &EquationsOfState::register_derived_with_charm,
+       &register_factory_classes_with_charm<EvolutionMetavars<4, 3>>,
+       &register_neutrino_tables},
+      {});
+}

src/Evolution/Executables/RadiationTransport/MonteCarlo/EvolveMonteCarlo.hpp

@@ -0,0 +1,254 @@
+// Distributed under the MIT License.
+// See LICENSE.txt for details.
+
+#pragma once
+
+#include <cstdint>
+#include <vector>
+
+#include "Domain/Creators/Factory3D.hpp"
+#include "Domain/Tags.hpp"
+#include "Evolution/Actions/RunEventsAndDenseTriggers.hpp"
+#include "Evolution/Actions/RunEventsAndTriggers.hpp"
+#include "Evolution/ComputeTags.hpp"
+#include "Evolution/DgSubcell/Actions/Initialize.hpp"
+#include "Evolution/DgSubcell/BackgroundGrVars.hpp"
+#include "Evolution/DiscontinuousGalerkin/Actions/ApplyBoundaryCorrections.hpp"
+#include "Evolution/DiscontinuousGalerkin/Actions/ComputeTimeDerivative.hpp"
+#include "Evolution/DiscontinuousGalerkin/Actions/VolumeTermsImpl.tpp"
+#include "Evolution/DiscontinuousGalerkin/BackgroundGrVars.hpp"
+#include "Evolution/DiscontinuousGalerkin/DgElementArray.hpp"
+#include "Evolution/DiscontinuousGalerkin/Initialization/Mortars.hpp"
+#include "Evolution/DiscontinuousGalerkin/Initialization/QuadratureTag.hpp"
+#include "Evolution/DiscontinuousGalerkin/Limiters/Minmod.hpp"
+#include "Evolution/DiscontinuousGalerkin/Limiters/Tags.hpp"
+#include "Evolution/Initialization/ConservativeSystem.hpp"
+#include "Evolution/Initialization/DgDomain.hpp"
+#include "Evolution/Initialization/Evolution.hpp"
+#include "Evolution/Initialization/Limiter.hpp"
+#include "Evolution/Initialization/SetVariables.hpp"
+#include "Evolution/Particles/MonteCarlo/Actions/InitializeMonteCarlo.hpp"
+#include "Evolution/Particles/MonteCarlo/Actions/TimeStepActions.hpp"
+#include "Evolution/Particles/MonteCarlo/GhostZoneCommunication.hpp"
+#include "Evolution/Particles/MonteCarlo/GhostZoneCommunicationTags.hpp"
+#include "Evolution/Particles/MonteCarlo/System.hpp"
+#include "Evolution/Particles/MonteCarlo/Tags.hpp"
+#include "Evolution/Systems/GrMhd/ValenciaDivClean/AllSolutions.hpp"
+#include "Evolution/Systems/GrMhd/ValenciaDivClean/Subcell/SwapGrTags.hpp"
+#include "IO/Observer/Actions/RegisterEvents.hpp"
+#include "IO/Observer/Helpers.hpp"
+#include "IO/Observer/ObserverComponent.hpp"
+#include "NumericalAlgorithms/DiscontinuousGalerkin/Formulation.hpp"
+#include "NumericalAlgorithms/DiscontinuousGalerkin/Tags.hpp"
+#include "Options/Protocols/FactoryCreation.hpp"
+#include "Options/String.hpp"
+#include "Parallel/Local.hpp"
+#include "Parallel/Phase.hpp"
+#include "Parallel/PhaseControl/CheckpointAndExitAfterWallclock.hpp"
+#include "Parallel/PhaseControl/ExecutePhaseChange.hpp"
+#include "Parallel/PhaseControl/Factory.hpp"
+#include "Parallel/PhaseControl/VisitAndReturn.hpp"
+#include "Parallel/PhaseDependentActionList.hpp"
+#include "Parallel/Protocols/RegistrationMetavariables.hpp"
+#include "ParallelAlgorithms/Actions/AddComputeTags.hpp"
+#include "ParallelAlgorithms/Actions/AddSimpleTags.hpp"
+#include "ParallelAlgorithms/Actions/InitializeItems.hpp"
+#include "ParallelAlgorithms/Actions/LimiterActions.hpp"
+#include "ParallelAlgorithms/Actions/MutateApply.hpp"
+#include "ParallelAlgorithms/Actions/TerminatePhase.hpp"
+#include "ParallelAlgorithms/Events/Factory.hpp"
+#include "ParallelAlgorithms/EventsAndDenseTriggers/DenseTrigger.hpp"
+#include "ParallelAlgorithms/EventsAndDenseTriggers/DenseTriggers/Factory.hpp"
+#include "ParallelAlgorithms/EventsAndTriggers/Completion.hpp"
+#include "ParallelAlgorithms/EventsAndTriggers/Event.hpp"
+#include "ParallelAlgorithms/EventsAndTriggers/EventsAndTriggers.hpp"
+#include "ParallelAlgorithms/EventsAndTriggers/LogicalTriggers.hpp"
+#include "ParallelAlgorithms/EventsAndTriggers/Trigger.hpp"
+#include "PointwiseFunctions/AnalyticData/AnalyticData.hpp"
+#include "PointwiseFunctions/AnalyticData/GrMhd/InitialMagneticFields/InitialMagneticField.hpp"
+#include "PointwiseFunctions/AnalyticData/Tags.hpp"
+#include "PointwiseFunctions/AnalyticSolutions/AnalyticSolution.hpp"
+#include "PointwiseFunctions/AnalyticSolutions/RadiationTransport/M1Grey/ConstantM1.hpp"
+#include "PointwiseFunctions/AnalyticSolutions/Tags.hpp"
+#include "PointwiseFunctions/Hydro/LowerSpatialFourVelocity.hpp"
+#include "PointwiseFunctions/Hydro/Tags.hpp"
+#include "PointwiseFunctions/InitialDataUtilities/Tags/InitialData.hpp"
+#include "Time/Actions/AdvanceTime.hpp"
+#include "Time/Actions/CleanHistory.hpp"
+#include "Time/Actions/RecordTimeStepperData.hpp"
+#include "Time/Actions/SelfStartActions.hpp"
+#include "Time/Actions/UpdateU.hpp"
+#include "Time/ChangeSlabSize/Action.hpp"
+#include "Time/StepChoosers/Factory.hpp"
+#include "Time/StepChoosers/StepChooser.hpp"
+#include "Time/Tags/Time.hpp"
+#include "Time/Tags/TimeStepId.hpp"
+#include "Time/TimeSequence.hpp"
+#include "Time/TimeSteppers/Factory.hpp"
+#include "Time/TimeSteppers/LtsTimeStepper.hpp"
+#include "Time/TimeSteppers/TimeStepper.hpp"
+#include "Time/Triggers/TimeTriggers.hpp"
+#include "Utilities/Functional.hpp"
+#include "Utilities/ProtocolHelpers.hpp"
+#include "Utilities/TMPL.hpp"
+
+/// \cond
+namespace Frame {
+struct Inertial;
+}  // namespace Frame
+namespace PUP {
+class er;
+}  // namespace PUP
+namespace Parallel {
+template <typename Metavariables>
+class CProxy_GlobalCache;
+}  // namespace Parallel
+/// \endcond
+
+// NEED:
+// Initial data
+
+template <size_t EnergyBins, size_t NeutrinoSpecies>
+struct EvolutionMetavars {
+  static constexpr size_t volume_dim = 3;
+
+  using system = Particles::MonteCarlo::System;
+  using temporal_id = Tags::TimeStepId;
+  using TimeStepperBase = TimeStepper;
+  static constexpr bool use_dg_subcell = true;
+
+  using initial_data_list =
+      grmhd::ValenciaDivClean::InitialData::initial_data_list;
+  using equation_of_state_tag = hydro::Tags::GrmhdEquationOfState;
+
+  struct SubcellOptions {
+    using evolved_vars_tags = typename system::variables_tag::tags_list;
+
+    static constexpr bool subcell_enabled = use_dg_subcell;
+    static constexpr bool subcell_enabled_at_external_boundary = true;
+  };
+
+  using observe_fields =
+      tmpl::list<domain::Tags::Coordinates<volume_dim, Frame::Grid>,
+                 domain::Tags::Coordinates<volume_dim, Frame::Inertial>>;
+  using non_tensor_compute_tags =
+      tmpl::list<::Events::Tags::ObserverMeshCompute<volume_dim>,
+                 ::Events::Tags::ObserverDetInvJacobianCompute<
+                     Frame::ElementLogical, Frame::Inertial>>;
+
+  using analytic_variables_tags = typename system::variables_tag::tags_list;
+  using analytic_compute = evolution::Tags::AnalyticSolutionsCompute<
+      volume_dim, analytic_variables_tags, false, initial_data_list>;
+
+  struct factory_creation
+      : tt::ConformsTo<Options::protocols::FactoryCreation> {
+    using factory_classes = tmpl::map<
+        tmpl::pair<DenseTrigger, DenseTriggers::standard_dense_triggers>,
+        tmpl::pair<DomainCreator<volume_dim>, domain_creators<volume_dim>>,
+        tmpl::pair<Event, tmpl::flatten<tmpl::list<Events::Completion>>>,
+        tmpl::pair<evolution::initial_data::InitialData, initial_data_list>,
+        tmpl::pair<
+            grmhd::AnalyticData::InitialMagneticFields::InitialMagneticField,
+            grmhd::AnalyticData::InitialMagneticFields::
+                initial_magnetic_fields>,
+        tmpl::pair<PhaseChange,
+                   tmpl::list<PhaseControl::CheckpointAndExitAfterWallclock>>,
+        tmpl::pair<StepChooser<StepChooserUse::Slab>,
+                   StepChoosers::standard_slab_choosers<system, false, false>>,
+        tmpl::pair<TimeSequence<double>,
+                   TimeSequences::all_time_sequences<double>>,
+        tmpl::pair<TimeSequence<std::uint64_t>,
+                   TimeSequences::all_time_sequences<std::uint64_t>>,
+        tmpl::pair<TimeStepper, TimeSteppers::time_steppers>,
+        tmpl::pair<Trigger, Triggers::time_triggers>>;
+  };
+
+  using observed_reduction_data_tags =
+      observers::collect_reduction_data_tags<tmpl::flatten<tmpl::list<
+          tmpl::at<typename factory_creation::factory_classes, Event>>>>;
+
+  using dg_registration_list =
+      tmpl::list<observers::Actions::RegisterEventsWithObservers>;
+
+  using initialization_actions = tmpl::list<
+      Initialization::Actions::InitializeItems<
+          Initialization::TimeStepping<EvolutionMetavars, TimeStepperBase>,
+          evolution::dg::Initialization::Domain<volume_dim>  //,
+          >,
+      Initialization::Actions::AddSimpleTags<
+          evolution::dg::BackgroundGrVars<system, EvolutionMetavars, true>>,
+      evolution::dg::subcell::Actions::SetSubcellGrid<volume_dim, system,
+                                                      false>,
+      Initialization::Actions::AddSimpleTags<
+          evolution::dg::subcell::BackgroundGrVars<system, EvolutionMetavars,
+                                                   true, false>>,
+      Actions::MutateApply<grmhd::ValenciaDivClean::subcell::SwapGrTags>,
+      Initialization::Actions::InitializeMCTags<system, EnergyBins,
+                                                NeutrinoSpecies>,
+      Initialization::Actions::AddComputeTags<tmpl::list<
+          hydro::Tags::LowerSpatialFourVelocityCompute,
+          Particles::MonteCarlo::InverseJacobianInertialToFluidCompute,
+          domain::Tags::JacobianCompute<4, Frame::Inertial, Frame::Fluid>>>,
+      evolution::Actions::InitializeRunEventsAndDenseTriggers,
+      Parallel::Actions::TerminatePhase>;
+
+  using dg_element_array = DgElementArray<
+      EvolutionMetavars,
+      tmpl::list<
+          Parallel::PhaseActions<Parallel::Phase::Initialization,
+                                 initialization_actions>,
+          Parallel::PhaseActions<
+              Parallel::Phase::Evolve,
+              tmpl::list<
+                  Actions::AdvanceTime,
+                  evolution::Actions::RunEventsAndTriggers<false>,
+                  Actions::AdvanceTime,
+                  evolution::Actions::RunEventsAndTriggers<false>,
+                  Actions::AdvanceTime,
+                  evolution::Actions::RunEventsAndTriggers<false>,
+                  Particles::MonteCarlo::Actions::SendDataForMcCommunication<
+                      volume_dim,
+                      // No local time stepping
+                      false, Particles::MonteCarlo::CommunicationStep::PreStep>,
+                  Particles::MonteCarlo::Actions::ReceiveDataForMcCommunication<
+                      volume_dim,
+                      Particles::MonteCarlo::CommunicationStep::PreStep>,
+                  Particles::MonteCarlo::Actions::TakeTimeStep<EnergyBins,
+                                                               NeutrinoSpecies>,
+                  Particles::MonteCarlo::Actions::SendDataForMcCommunication<
+                      volume_dim,
+                      // No local time stepping
+                      false,
+                      Particles::MonteCarlo::CommunicationStep::PostStep>,
+                  Particles::MonteCarlo::Actions::ReceiveDataForMcCommunication<
+                      volume_dim,
+                      Particles::MonteCarlo::CommunicationStep::PostStep>,
+                  PhaseControl::Actions::ExecutePhaseChange>>>>;
+
+  struct registration
+      : tt::ConformsTo<Parallel::protocols::RegistrationMetavariables> {
+    using element_registrars =
+        tmpl::map<tmpl::pair<dg_element_array, dg_registration_list>>;
+  };
+
+  using component_list =
+      tmpl::list<observers::Observer<EvolutionMetavars>,
+                 observers::ObserverWriter<EvolutionMetavars>,
+                 dg_element_array>;
+
+  using const_global_cache_tags = tmpl::list<
+      equation_of_state_tag, evolution::initial_data::Tags::InitialData,
+      Particles::MonteCarlo::Tags::InteractionRatesTable<EnergyBins,
+                                                         NeutrinoSpecies>>;
+
+  static constexpr Options::String help{
+      "Evolve Monte Carlo transport (without coupling to hydro).\n\n"};
+
+  static constexpr std::array<Parallel::Phase, 5> default_phase_order{
+      {Parallel::Phase::Initialization,
+       Parallel::Phase::InitializeTimeStepperHistory, Parallel::Phase::Register,
+       Parallel::Phase::Evolve, Parallel::Phase::Exit}};
+
+  // NOLINTNEXTLINE(google-runtime-references)
+  void pup(PUP::er& /*p*/) {}
+};

src/Evolution/Initialization/SetVariables.hpp

@@ -155,15 +155,18 @@ struct SetVariables {
       using variables_tag = typename system::variables_tag;
 
       // Set initial data from analytic solution
-      using Vars = typename variables_tag::type;
-      db::mutate<variables_tag>(
-          [&initial_time, &inertial_coords,
-           &solution_or_data](const gsl::not_null<Vars*> vars) {
-            vars->assign_subset(evolution::Initialization::initial_data(
-                solution_or_data, inertial_coords, initial_time,
-                typename Vars::tags_list{}));
-          },
-          box);
+      if constexpr (not std::is_same_v<typename variables_tag::tags_list,
+                                       tmpl::list<>>) {
+        using Vars = typename variables_tag::type;
+        db::mutate<variables_tag>(
+            [&initial_time, &inertial_coords,
+             &solution_or_data](const gsl::not_null<Vars*> vars) {
+              vars->assign_subset(evolution::Initialization::initial_data(
+                  solution_or_data, inertial_coords, initial_time,
+                  typename Vars::tags_list{}));
+            },
+            box);
+      }
     }
   }
 };

src/Evolution/Particles/MonteCarlo/Actions/CMakeLists.txt

@@ -5,5 +5,6 @@ spectre_target_headers(
   ${LIBRARY}
   INCLUDE_DIRECTORY ${CMAKE_SOURCE_DIR}/src
   HEADERS
+  InitializeMonteCarlo.hpp
   TimeStepActions.hpp
   )