124 lines
5.2 KiB
C++
124 lines
5.2 KiB
C++
module;
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#include <cstdint>
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#include <expected>
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#include <memory>
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#include <mfem.hpp>
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#include <stdexcept>
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#include <vector>
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export module mean_field:operators.prepared_hdiv_mass;
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export import :fem;
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export import :field.mfem;
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export import :mapping.domain_mapper;
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export namespace mean_field::operators {
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enum class HDivMassPreparationRejectionReason : std::uint8_t { invalid_mapping, non_finite_arithmetic };
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struct HDivMassPreparationRejection final {
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HDivMassPreparationRejectionReason reason{HDivMassPreparationRejectionReason::invalid_mapping};
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mapping::MappingStatus mappingStatus{mapping::MappingStatus::valid};
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};
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using HDivMassPreparationResult = std::expected<void, HDivMassPreparationRejection>;
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[[noreturn]] inline void throwHDivMassPreparationRejection(const HDivMassPreparationRejection &rejection) {
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if (rejection.reason == HDivMassPreparationRejectionReason::non_finite_arithmetic) {
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throw std::domain_error("Prepared H(div) mass data contained non-finite arithmetic.");
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}
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throw std::domain_error("Prepared H(div) mass data could not map the candidate geometry.");
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}
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class PreparedMappedHDivMassOperator final : public mfem::Operator {
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public:
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PreparedMappedHDivMassOperator(
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const fem::FEM &f,
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const mapping::DomainMapper &domain_mapper
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);
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void Prepare(const mfem::Vector &displacement);
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void PreparePrimal(const mfem::Vector &displacement);
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[[nodiscard]] HDivMassPreparationResult TryPrepare(const mfem::Vector &displacement);
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[[nodiscard]] HDivMassPreparationResult TryPreparePrimal(const mfem::Vector &displacement);
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void Mult(
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const mfem::Vector &gravity_gradient,
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mfem::Vector &action
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) const override;
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void MultDisplacementVariationTrue(
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const mfem::Vector &gravityGradientTrue,
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const mfem::Vector &displacementVariationTrue,
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mfem::Vector &actionVariationTrue
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) const;
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void AssembleDiagonal(mfem::Vector &diagonal) const override;
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void AssembleTrueDiagonal(mfem::Vector &diagonal) const;
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[[nodiscard]] bool IsPrepared() const noexcept;
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[[nodiscard]] bool HasVariationData() const noexcept;
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[[nodiscard]] std::uint64_t GetPreparationCount() const noexcept;
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[[nodiscard]] const field::FieldDofMap &GetFluxMap() const noexcept;
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[[nodiscard]] const field::FieldDofMap &GetDisplacementMap() const noexcept;
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private:
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enum class PreparationMode : std::uint8_t { primal, linearization };
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struct ElementVariationData {
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int elementId{-1};
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mfem::Array<int> gravityGradientDofs;
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mfem::Array<int> displacementDofs;
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mfem::Array<int> compactificationDofs;
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mfem::DofTransformation *gravityGradientDofTransformation{nullptr};
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mfem::DofTransformation *displacementDofTransformation{nullptr};
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mfem::Vector baseDisplacement;
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mfem::Vector compactification;
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const mfem::IntegrationRule *integrationRule{nullptr};
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mfem::DenseMatrix frozenMappingData;
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};
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[[nodiscard]] mapping::MappingStatus PrepareVariationData();
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[[nodiscard]] HDivMassPreparationResult TryPrepareImpl(
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const mfem::Vector &displacement,
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PreparationMode mode
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);
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const fem::FEM &m_fem;
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const mapping::DomainMapper &m_domain_mapper;
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field::FieldDofMap m_flux_map;
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field::FieldDofMap m_displacement_map;
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mfem::Array<int> m_stellar_marker;
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mfem::Array<int> m_vacuum_marker;
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std::unique_ptr<mfem::MatrixCoefficient> m_stellar_mass_coefficient;
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std::unique_ptr<mfem::MatrixCoefficient> m_vacuum_mass_coefficient;
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std::unique_ptr<mfem::ParBilinearForm> m_stellar_mass_form;
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std::unique_ptr<mfem::ParBilinearForm> m_vacuum_mass_form;
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mutable mfem::Vector m_flux_true;
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mutable mfem::Vector m_action_true;
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mutable mfem::Vector m_domain_action_true;
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mutable mfem::Vector m_flux_local;
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mutable mfem::Vector m_action_local;
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mutable mfem::Vector m_domain_action_local;
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mfem::Vector m_displacement_true;
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std::vector<ElementVariationData> m_variationElements;
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mutable mapping::DomainMapper::Workspace m_variationWorkspace;
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mutable mapping::VolumeMappingContext m_baseMappingContext;
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mutable mapping::VolumeMappingVariation m_mappingVariation;
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mutable mfem::Vector m_gravityGradientLocal;
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mutable mfem::Vector m_displacementVariationLocal;
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mutable mfem::Vector m_localVariationAction;
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mutable mfem::Vector m_elementGravityGradient;
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mutable mfem::Vector m_elementDisplacementVariation;
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mutable mfem::Vector m_elementVariationAction;
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mutable mfem::Vector m_gravityGradientValue;
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mutable mfem::Vector m_massTensorVariationAction;
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mutable mfem::DenseMatrix m_gravityGradientShape;
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mutable mfem::DenseMatrix m_massTensorVariation;
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std::uint64_t m_preparation_count{0};
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bool m_is_prepared{false};
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bool m_has_variation_data{false};
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bool m_single_rank{true};
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};
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} // namespace mean_field::operators
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