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perf(allocations): reduced overall allocations by 95%, increaseed jacobian applicatin by 2x

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This commit uses global pre allocated work space to dramatically reduce memory usage and allocation time
This commit is contained in:
Emily Boudreaux
2026-09-10 06:50:56 -04:00
parent b3c04d507a
commit 75cc638739
66 changed files with 207183 additions and 99552 deletions
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25
libmeanfield/interface/operators/prepared_hydrostatic_equilibrium_operator.cppm
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@@ -4,6 +4,7 @@ module;
#include <cstddef>
#include <cstdint>
#include <expected>
#include <memory>
#include <optional>
#include <stdexcept>
#include <vector>
@@ -13,7 +14,9 @@ module;
export module mean_field:operators.prepared_hydrostatic_equilibrium;
export import :fem;
export import :fem.reference_tables;
export import :mapping.domain_mapper;
export import :mapping.prepared_cache;
export import :operators.context.hydrostatic_equilibrium;
export import :physics.rigid_rotation;
@@ -216,6 +219,12 @@ export namespace mean_field::operators {
[[nodiscard]] const field::FieldDofMap &GetDisplacementMap() const noexcept;
template <typename Visitor> void VisitMappedGeometryRules(Visitor &&visitor) const {
for (const ElementPAData &data : m_elements) {
visitor(data.elementId, *data.integrationRule);
}
}
private:
struct ElementPAData {
int elementId{-1};
@@ -232,15 +241,23 @@ export namespace mean_field::operators {
const mfem::IntegrationRule *integrationRule{nullptr};
// Rows are quadrature points and columns are element DOFs.
mfem::DenseMatrix enthalpyBasis;
mfem::DenseMatrix gravityPotentialBasis;
// Immutable reference values and gradients are shared by FE/rule.
std::shared_ptr<const fem::ScalarReferenceTable> enthalpyReferenceTable;
std::shared_ptr<const fem::ScalarReferenceTable> gravityPotentialReferenceTable;
[[nodiscard]] const mfem::DenseMatrix &GetEnthalpyBasis() const {
return enthalpyReferenceTable->GetValues();
}
[[nodiscard]] const mfem::DenseMatrix &GetGravityPotentialBasis() const {
return gravityPotentialReferenceTable->GetValues();
}
// Rows are quadrature points and columns are physical components.
mfem::DenseMatrix physicalPositions;
mfem::Vector quadratureWeights;
std::vector<mapping::VolumeMappingContext> baseMappingContexts;
mapping::VolumeMappingCache baseMappingContexts;
std::optional<mapping::ElementDisplacementData> baseDisplacementData;