Nektar::SolverUtils::DriverAdaptive Class Reference

Base class for the adaptive polynomial order driver. More...

#include <DriverAdaptive.h>

Inheritance diagram for Nektar::SolverUtils::DriverAdaptive:

Static Public Member Functions
static DriverSharedPtr	create (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Creates an instance of this class. More...

Static Public Attributes
static std::string	className
	Name of the class. More...

Protected Member Functions
SOLVER_UTILS_EXPORT	DriverAdaptive (const LibUtilities::SessionReaderSharedPtr pSession, const SpatialDomains::MeshGraphSharedPtr pGraph)
	Constructor. More...
SOLVER_UTILS_EXPORT	~DriverAdaptive () override
	Destructor. More...
SOLVER_UTILS_EXPORT void	v_InitObject (std::ostream &out=std::cout) override
	Virtual function for initialisation implementation. More...
SOLVER_UTILS_EXPORT void	v_Execute (std::ostream &out=std::cout) override
	Virtual function for solve implementation. More...
Protected Member Functions inherited from Nektar::SolverUtils::Driver
	Driver (const LibUtilities::SessionReaderSharedPtr pSession, const SpatialDomains::MeshGraphSharedPtr pGraph)
	Initialises EquationSystem class members. More...
virtual SOLVER_UTILS_EXPORT void	v_InitObject (std::ostream &out=std::cout)
	Virtual function for initialisation implementation. More...
virtual SOLVER_UTILS_EXPORT void	v_Execute (std::ostream &out=std::cout)=0
	Virtual function for solve implementation. More...

Static Protected Attributes
static std::string	driverLookupId
Static Protected Attributes inherited from Nektar::SolverUtils::Driver
static std::string	evolutionOperatorLookupIds []
static std::string	evolutionOperatorDef
static std::string	driverDefault

Private Member Functions
SOLVER_UTILS_EXPORT void	ReplaceExpansion (Array< OneD, MultiRegions::ExpListSharedPtr > &fields, std::map< int, int > deltaP)
	Update EXPANSIONS tag inside XML schema to reflect new polynomial order distribution. More...

Friends
class	MemoryManager< DriverAdaptive >

Additional Inherited Members
Public Member Functions inherited from Nektar::SolverUtils::Driver
virtual	~Driver ()=default
	Destructor. More...
SOLVER_UTILS_EXPORT void	InitObject (std::ostream &out=std::cout)
	Initialise Object. More...
SOLVER_UTILS_EXPORT void	Execute (std::ostream &out=std::cout)
	Execute driver. More...
SOLVER_UTILS_EXPORT Array< OneD, EquationSystemSharedPtr >	GetEqu ()
Protected Attributes inherited from Nektar::SolverUtils::Driver
LibUtilities::CommSharedPtr	m_comm
	Communication object. More...
LibUtilities::SessionReaderSharedPtr	m_session
	Session reader object. More...
LibUtilities::SessionReaderSharedPtr	session_LinNS
	Coupling between SFD and arnoldi. More...
SpatialDomains::MeshGraphSharedPtr	m_graph
	MeshGraph object. More...
Array< OneD, EquationSystemSharedPtr >	m_equ
	Equation system to solve. More...
int	m_nequ
	number of equations More...
enum EvolutionOperatorType	m_EvolutionOperator
	Evolution Operator. More...

Detailed Description

Base class for the adaptive polynomial order driver.

Definition at line 45 of file DriverAdaptive.h.

Constructor & Destructor Documentation

DriverAdaptive()

Nektar::SolverUtils::DriverAdaptive::DriverAdaptive ( const LibUtilities::SessionReaderSharedPtr  pSession, const SpatialDomains::MeshGraphSharedPtr  pGraph  )

protected

Constructor.

Definition at line 61 of file DriverAdaptive.cpp.

    : Driver(pSession, pGraph)
{
}

~DriverAdaptive()

Nektar::SolverUtils::DriverAdaptive::~DriverAdaptive ( )

overrideprotected

Destructor.

Definition at line 71 of file DriverAdaptive.cpp.

{
}

Member Function Documentation

create()

static DriverSharedPtr Nektar::SolverUtils::DriverAdaptive::create ( const LibUtilities::SessionReaderSharedPtr &  pSession, const SpatialDomains::MeshGraphSharedPtr &  pGraph  )

inlinestatic

Creates an instance of this class.

Definition at line 51 of file DriverAdaptive.h.

    {
        DriverSharedPtr p =
            MemoryManager<DriverAdaptive>::AllocateSharedPtr(pSession, pGraph);
        p->InitObject();
        return p;
    }

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), and CellMLToNektar.cellml_metadata::p.

ReplaceExpansion()

void Nektar::SolverUtils::DriverAdaptive::ReplaceExpansion ( Array< OneD, MultiRegions::ExpListSharedPtr > &  fields, std::map< int, int >  deltaP  )

private

Update EXPANSIONS tag inside XML schema to reflect new polynomial order distribution.

Parameters

fields	Input fields.
deltaP	Map of polynomial order expansions

Definition at line 447 of file DriverAdaptive.cpp.

{
    int nExp, nDim;
    int expdim = m_equ[0]->UpdateFields()[0]->GetGraph()->GetMeshDimension();
 
    // Get field definitions
    std::vector<LibUtilities::FieldDefinitionsSharedPtr> fielddefs =
        fields[0]->GetFieldDefinitions();
 
    if (fielddefs[0]->m_numHomogeneousDir == 1)
    {
        nDim = expdim + 1;
    }
    else
    {
        nDim = expdim;
    }
 
    // Add variables to field definition
    for (int i = 0; i < fielddefs.size(); ++i)
    {
        for (int j = 0; j < fields.size(); ++j)
        {
            fielddefs[i]->m_fields.push_back(m_session->GetVariable(j));
        }
    }
 
    // Get tinyxml objects
    TiXmlElement *exp_tag = m_session->GetElement("NEKTAR/EXPANSIONS");
 
    // Clear current expansions
    exp_tag->Clear();
 
    // Write new expansion information
    for (int f = 0; f < fielddefs.size(); ++f)
    {
        nExp = fielddefs[f]->m_elementIDs.size();
 
        //---------------------------------------------
        // Write ELEMENTS
        TiXmlElement *elemTag = new TiXmlElement("ELEMENTS");
        exp_tag->LinkEndChild(elemTag);
 
        // Write FIELDS
        std::string fieldsString;
        {
            std::stringstream fieldsStringStream;
            bool first = true;
            for (std::vector<int>::size_type i = 0;
                 i < fielddefs[f]->m_fields.size(); i++)
            {
                if (!first)
                {
                    fieldsStringStream << ",";
                }
                fieldsStringStream << fielddefs[f]->m_fields[i];
                first = false;
            }
            fieldsString = fieldsStringStream.str();
        }
        elemTag->SetAttribute("FIELDS", fieldsString);
 
        // Write SHAPE
        std::string shapeString;
        {
            std::stringstream shapeStringStream;
            shapeStringStream
                << LibUtilities::ShapeTypeMap[fielddefs[f]->m_shapeType];
            if (fielddefs[f]->m_numHomogeneousDir == 1)
            {
                shapeStringStream << "-HomogenousExp1D";
            }
            else if (fielddefs[f]->m_numHomogeneousDir == 2)
            {
                shapeStringStream << "-HomogenousExp2D";
            }
 
            shapeString = shapeStringStream.str();
        }
        elemTag->SetAttribute("SHAPE", shapeString);
 
        // Write BASIS
        std::string basisString;
        {
            std::stringstream basisStringStream;
            bool first = true;
            for (std::vector<LibUtilities::BasisType>::size_type i = 0;
                 i < fielddefs[f]->m_basis.size(); i++)
            {
                if (!first)
                {
                    basisStringStream << ",";
                }
                basisStringStream
                    << LibUtilities::BasisTypeMap[fielddefs[f]->m_basis[i]];
                first = false;
            }
            basisString = basisStringStream.str();
        }
        elemTag->SetAttribute("BASIS", basisString);
 
        // Write homogeneuous length details
        if (fielddefs[f]->m_numHomogeneousDir)
        {
            std::string homoLenString;
            {
                std::stringstream homoLenStringStream;
                bool first = true;
                for (int i = 0; i < fielddefs[f]->m_numHomogeneousDir; ++i)
                {
                    if (!first)
                    {
                        homoLenStringStream << ",";
                    }
                    homoLenStringStream
                        << fielddefs[f]->m_homogeneousLengths[i];
                    first = false;
                }
                homoLenString = homoLenStringStream.str();
            }
            elemTag->SetAttribute("HOMOGENEOUSLENGTHS", homoLenString);
        }
 
        // Write homogeneuous planes/lines details
        if (fielddefs[f]->m_numHomogeneousDir)
        {
            if (fielddefs[f]->m_homogeneousYIDs.size() > 0)
            {
                std::string homoYIDsString;
                {
                    std::stringstream homoYIDsStringStream;
                    bool first = true;
                    for (int i = 0; i < fielddefs[f]->m_homogeneousYIDs.size();
                         i++)
                    {
                        if (!first)
                        {
                            homoYIDsStringStream << ",";
                        }
                        homoYIDsStringStream
                            << fielddefs[f]->m_homogeneousYIDs[i];
                        first = false;
                    }
                    homoYIDsString = homoYIDsStringStream.str();
                }
                elemTag->SetAttribute("HOMOGENEOUSYIDS", homoYIDsString);
            }
 
            if (fielddefs[f]->m_homogeneousZIDs.size() > 0)
            {
                std::string homoZIDsString;
                {
                    std::stringstream homoZIDsStringStream;
                    bool first = true;
                    for (int i = 0; i < fielddefs[f]->m_homogeneousZIDs.size();
                         i++)
                    {
                        if (!first)
                        {
                            homoZIDsStringStream << ",";
                        }
                        homoZIDsStringStream
                            << fielddefs[f]->m_homogeneousZIDs[i];
                        first = false;
                    }
                    homoZIDsString = homoZIDsStringStream.str();
                }
                elemTag->SetAttribute("HOMOGENEOUSZIDS", homoZIDsString);
            }
        }
 
        // Write NUMMODESPERDIR
        std::string numModesString;
        {
            std::stringstream numModesStringStream;
 
            numModesStringStream << "MIXORDER:";
            bool first = true;
            int eId;
            Array<OneD, int> order(nDim, 0);
            for (int n = 0; n < nExp; n++)
            {
                eId = fielddefs[f]->m_elementIDs[n];
 
                for (int i = 0; i < expdim; i++)
                {
                    order[i] = deltaP[eId];
                }
 
                for (int i = 0; i < nDim; i++)
                {
                    if (fielddefs[f]->m_uniOrder)
                    {
                        order[i] += fielddefs[f]->m_numModes[i];
                    }
                    else
                    {
                        order[i] += fielddefs[f]->m_numModes[n * nDim + i];
                    }
 
                    if (!first)
                    {
                        numModesStringStream << ",";
                    }
 
                    numModesStringStream << order[i];
                    first = false;
                }
            }
            numModesString = numModesStringStream.str();
        }
        elemTag->SetAttribute("NUMMODESPERDIR", numModesString);
 
        // Write IDs. Should ideally look at ways of compressing this stream if
        // just sequential.
        elemTag->SetAttribute(
            "ID", ParseUtils::GenerateSeqString(fielddefs[f]->m_elementIDs));
    }
}

References Nektar::LibUtilities::BasisTypeMap, Nektar::ParseUtils::GenerateSeqString(), Nektar::SolverUtils::Driver::m_equ, Nektar::SolverUtils::Driver::m_session, and Nektar::LibUtilities::ShapeTypeMap.

Referenced by v_Execute().

v_Execute()

void Nektar::SolverUtils::DriverAdaptive::v_Execute ( std::ostream &  out = std::cout )

overrideprotectedvirtual

Virtual function for solve implementation.

Implements Nektar::SolverUtils::Driver.

Definition at line 86 of file DriverAdaptive.cpp.

{
    Nektar::LibUtilities::Timer timer;
    NekDouble CPUtime;
 
    m_equ[0]->PrintSummary(out);
 
    // First run using original order
    timer.Start();
    m_equ[0]->DoInitialise();
 
    // Obtain initial time in case a restart was used
    NekDouble startTime = m_equ[0]->GetTime();
    m_equ[0]->DoSolve();
 
    // Load session parameters and solver info
    bool isHomogeneous1D;
    int nRuns, minP, maxP, sensorVar;
    NekDouble lowerTol, upperTol;
    m_session->LoadParameter("NumRuns", nRuns, 1);
    m_session->LoadParameter("AdaptiveMinModes", minP, 4);
    m_session->LoadParameter("AdaptiveMaxModes", maxP, 12);
    m_session->LoadParameter("AdaptiveLowerTolerance", lowerTol, 1e-8);
    m_session->LoadParameter("AdaptiveUpperTolerance", upperTol, 1e-6);
    m_session->LoadParameter("AdaptiveSensorVariable", sensorVar, 0);
    m_session->MatchSolverInfo("Homogeneous", "1D", isHomogeneous1D, false);
 
    // Get number of elements and planes
    int nExp, nPlanes;
    if (isHomogeneous1D)
    {
        nExp    = m_equ[0]->UpdateFields()[0]->GetPlane(0)->GetExpSize();
        nPlanes = m_equ[0]->UpdateFields()[0]->GetZIDs().size();
    }
    else
    {
        nExp    = m_equ[0]->UpdateFields()[0]->GetExpSize();
        nPlanes = 1;
    }
    int expdim = m_equ[0]->UpdateFields()[0]->GetGraph()->GetMeshDimension();
 
    int nFields      = m_equ[0]->UpdateFields().size();
    int numSteps     = m_session->GetParameter("NumSteps");
    NekDouble period = m_session->GetParameter("TimeStep") * numSteps;
 
    Array<OneD, NekDouble> coeffs, phys, physReduced, tmpArray;
 
    // Get mapping
    GlobalMapping::MappingSharedPtr mapping;
    mapping = GlobalMapping::Mapping::Load(m_session, m_equ[0]->UpdateFields());
 
    // Adaptive loop
    Array<OneD, int> P(expdim);
    Array<OneD, int> numPoints(expdim);
    Array<OneD, LibUtilities::PointsKey> ptsKey(expdim);
    LocalRegions::ExpansionSharedPtr Exp;
    for (int i = 1; i < nRuns; i++)
    {
        // Get field expansions
        Array<OneD, MultiRegions::ExpListSharedPtr> fields =
            m_equ[0]->UpdateFields();
 
        // Determine the change to be applied in the order
        map<int, int> deltaP;
        int offset = 0;
        for (int n = 0; n < nExp; n++)
        {
            offset = fields[sensorVar]->GetPhys_Offset(n);
            Exp    = fields[sensorVar]->GetExp(n);
 
            for (int k = 0; k < expdim; ++k)
            {
                P[k]         = Exp->GetBasis(k)->GetNumModes();
                numPoints[k] = Exp->GetBasis(k)->GetNumPoints();
                ptsKey[k]    = LibUtilities::PointsKey(
                    numPoints[k], Exp->GetBasis(k)->GetPointsType());
            }
 
            // Declare orthogonal basis.
            StdRegions::StdExpansionSharedPtr OrthoExp;
            switch (Exp->GetGeom()->GetShapeType())
            {
                case LibUtilities::eQuadrilateral:
                {
                    LibUtilities::BasisKey Ba(LibUtilities::eOrtho_A, P[0] - 1,
                                              ptsKey[0]);
                    LibUtilities::BasisKey Bb(LibUtilities::eOrtho_A, P[1] - 1,
                                              ptsKey[1]);
                    OrthoExp = MemoryManager<
                        StdRegions::StdQuadExp>::AllocateSharedPtr(Ba, Bb);
                    break;
                }
                case LibUtilities::eTriangle:
                {
                    LibUtilities::BasisKey Ba(LibUtilities::eOrtho_A, P[0] - 1,
                                              ptsKey[0]);
                    LibUtilities::BasisKey Bb(LibUtilities::eOrtho_B, P[1] - 1,
                                              ptsKey[1]);
                    OrthoExp =
                        MemoryManager<StdRegions::StdTriExp>::AllocateSharedPtr(
                            Ba, Bb);
                    break;
                }
                case LibUtilities::eTetrahedron:
                {
                    LibUtilities::BasisKey Ba(LibUtilities::eOrtho_A, P[0] - 1,
                                              ptsKey[0]);
                    LibUtilities::BasisKey Bb(LibUtilities::eOrtho_B, P[1] - 1,
                                              ptsKey[1]);
                    LibUtilities::BasisKey Bc(LibUtilities::eOrtho_C, P[2] - 1,
                                              ptsKey[2]);
                    OrthoExp =
                        MemoryManager<StdRegions::StdTetExp>::AllocateSharedPtr(
                            Ba, Bb, Bc);
                    break;
                }
                case LibUtilities::ePyramid:
                {
                    LibUtilities::BasisKey Ba(LibUtilities::eOrtho_A, P[0] - 1,
                                              ptsKey[0]);
                    LibUtilities::BasisKey Bb(LibUtilities::eOrtho_A, P[1] - 1,
                                              ptsKey[1]);
                    LibUtilities::BasisKey Bc(LibUtilities::eOrtho_C, P[2] - 1,
                                              ptsKey[2]);
                    OrthoExp =
                        MemoryManager<StdRegions::StdPyrExp>::AllocateSharedPtr(
                            Ba, Bb, Bc);
                    break;
                }
                case LibUtilities::ePrism:
                {
                    LibUtilities::BasisKey Ba(LibUtilities::eOrtho_A, P[0] - 1,
                                              ptsKey[0]);
                    LibUtilities::BasisKey Bb(LibUtilities::eOrtho_A, P[1] - 1,
                                              ptsKey[1]);
                    LibUtilities::BasisKey Bc(LibUtilities::eOrtho_B, P[2] - 1,
                                              ptsKey[2]);
                    OrthoExp = MemoryManager<
                        StdRegions::StdPrismExp>::AllocateSharedPtr(Ba, Bb, Bc);
                    break;
                }
                case LibUtilities::eHexahedron:
                {
                    LibUtilities::BasisKey Ba(LibUtilities::eOrtho_A, P[0] - 1,
                                              ptsKey[0]);
                    LibUtilities::BasisKey Bb(LibUtilities::eOrtho_A, P[1] - 1,
                                              ptsKey[1]);
                    LibUtilities::BasisKey Bc(LibUtilities::eOrtho_A, P[2] - 1,
                                              ptsKey[2]);
                    OrthoExp =
                        MemoryManager<StdRegions::StdHexExp>::AllocateSharedPtr(
                            Ba, Bb, Bc);
                    break;
                }
                default:
                    ASSERTL0(false, "Shape not supported.");
                    break;
            }
 
            int nq = OrthoExp->GetTotPoints();
 
            NekDouble error = 0;
            NekDouble fac   = 0;
            NekDouble tmp   = 0;
 
            coeffs      = Array<OneD, NekDouble>(OrthoExp->GetNcoeffs());
            physReduced = Array<OneD, NekDouble>(OrthoExp->GetTotPoints());
            tmpArray    = Array<OneD, NekDouble>(OrthoExp->GetTotPoints(), 0.0);
 
            // Refinement based only on one variable
            for (int plane = 0; plane < nPlanes; plane++)
            {
                if (isHomogeneous1D)
                {
                    phys =
                        fields[sensorVar]->GetPlane(plane)->GetPhys() + offset;
                }
                else
                {
                    phys = fields[sensorVar]->GetPhys() + offset;
                }
 
                // Project solution to lower order
                OrthoExp->FwdTrans(phys, coeffs);
                OrthoExp->BwdTrans(coeffs, physReduced);
 
                // Calculate error =||phys-physReduced||^2 / ||phys||^2
                Vmath::Vsub(nq, phys, 1, physReduced, 1, tmpArray, 1);
                Vmath::Vmul(nq, tmpArray, 1, tmpArray, 1, tmpArray, 1);
                tmp = Exp->Integral(tmpArray);
 
                Vmath::Vmul(nq, phys, 1, phys, 1, tmpArray, 1);
                fac = Exp->Integral(tmpArray);
 
                tmp = abs(tmp / fac);
 
                if (tmp != tmp)
                {
                    ASSERTL0(false,
                             "Adaptive procedure encountered NaN value.");
                }
 
                // Get maximum value along planes
                error = (tmp > error) ? tmp : error;
            }
 
            // Combine planes from different processes
            m_session->GetComm()->GetColumnComm()->AllReduce(
                error, LibUtilities::ReduceMax);
 
            // Override tolerances if function is defined
            if (m_session->DefinesFunction("AdaptiveLowerTolerance"))
            {
                int nq = Exp->GetTotPoints();
 
                // Obtain points from the the element
                Array<OneD, NekDouble> xc0, xc1, xc2;
                xc0 = Array<OneD, NekDouble>(nq, 0.0);
                xc1 = Array<OneD, NekDouble>(nq, 0.0);
                xc2 = Array<OneD, NekDouble>(nq, 0.0);
                Exp->GetCoords(xc0, xc1, xc2);
 
                // Evaluate function from session file
                Array<OneD, NekDouble> tolerance(nq, 0.0);
                LibUtilities::EquationSharedPtr ffunc =
                    m_session->GetFunction("AdaptiveLowerTolerance", 0);
                ffunc->Evaluate(xc0, xc1, xc2, tolerance);
                lowerTol = Vmath::Vsum(nq, tolerance, 1) / nq;
            }
 
            if (m_session->DefinesFunction("AdaptiveUpperTolerance"))
            {
                int nq = Exp->GetTotPoints();
 
                // Obtain points from the the element
                Array<OneD, NekDouble> xc0, xc1, xc2;
                xc0 = Array<OneD, NekDouble>(nq, 0.0);
                xc1 = Array<OneD, NekDouble>(nq, 0.0);
                xc2 = Array<OneD, NekDouble>(nq, 0.0);
                Exp->GetCoords(xc0, xc1, xc2);
 
                // Evaluate function from session file
                Array<OneD, NekDouble> tolerance(nq, 0.0);
                LibUtilities::EquationSharedPtr ffunc =
                    m_session->GetFunction("AdaptiveUpperTolerance", 0);
                ffunc->Evaluate(xc0, xc1, xc2, tolerance);
                upperTol = Vmath::Vsum(nq, tolerance, 1) / nq;
            }
 
            // Determine what to do with the polynomial order
            if ((error > upperTol) && (P[0] < maxP))
            {
                deltaP[Exp->GetGeom()->GetGlobalID()] = 1;
            }
            else if ((error < lowerTol) && P[0] > minP)
            {
                deltaP[Exp->GetGeom()->GetGlobalID()] = -1;
            }
            else
            {
                deltaP[Exp->GetGeom()->GetGlobalID()] = 0;
            }
        }
 
        // Write new expansion section to the session reader and re-read graph.
        ReplaceExpansion(fields, deltaP);
        m_graph->ReadExpansionInfo();
 
        // Reset GlobalLinSys Manager to avoid using too much memory
        //
        // @todo This could be made better by replacing individual matrices
        //       within the linear system.
        if (LibUtilities::NekManager<MultiRegions::GlobalLinSysKey,
                                     MultiRegions::GlobalLinSys>::
                PoolCreated(std::string("GlobalLinSys")))
        {
            LibUtilities::NekManager<MultiRegions::GlobalLinSysKey,
                                     MultiRegions::GlobalLinSys>::
                ClearManager(std::string("GlobalLinSys"));
        }
 
        int chkNumber = m_equ[0]->GetCheckpointNumber();
        int chkSteps  = m_equ[0]->GetCheckpointSteps();
 
        // Initialise driver again
        Driver::v_InitObject(out);
 
        // Update mapping (must be before m_equ[0]->DoInitialise();)
        mapping->ReplaceField(m_equ[0]->UpdateFields());
 
        // Set chkSteps to zero to avoid writing initial condition
        m_equ[0]->SetCheckpointSteps(0);
 
        // Initialise equation
        m_equ[0]->DoInitialise();
        m_equ[0]->SetInitialStep(i * numSteps);
        m_equ[0]->SetSteps(i * numSteps + numSteps);
        m_equ[0]->SetTime(startTime + i * period);
        m_equ[0]->SetBoundaryConditions(startTime + i * period);
        m_equ[0]->SetCheckpointNumber(chkNumber);
        m_equ[0]->SetCheckpointSteps(chkSteps);
 
        // Project solution to new expansion
        for (int n = 0; n < nFields; n++)
        {
            m_equ[0]->UpdateFields()[n]->ExtractCoeffsToCoeffs(
                fields[n], fields[n]->GetCoeffs(),
                m_equ[0]->UpdateFields()[n]->UpdateCoeffs());
            m_equ[0]->UpdateFields()[n]->BwdTrans(
                m_equ[0]->UpdateFields()[n]->GetCoeffs(),
                m_equ[0]->UpdateFields()[n]->UpdatePhys());
        }
 
        // Solve equation
        m_equ[0]->DoSolve();
    }
 
    timer.Stop();
 
    m_equ[0]->Output();
 
    if (m_comm->GetRank() == 0)
    {
        CPUtime = timer.Elapsed().count();
        cout << "-------------------------------------------" << endl;
        cout << "Total Computation Time = " << CPUtime << "s" << endl;
        cout << "-------------------------------------------" << endl;
    }
 
    // Evaluate and output computation time and solution accuracy.
    // The specific format of the error output is essential for the
    // regression tests to work.
 
    // Evaluate L2 Error
    for (int i = 0; i < m_equ[0]->GetNvariables(); ++i)
    {
        Array<OneD, NekDouble> exactsoln(m_equ[0]->GetTotPoints(), 0.0);
 
        // Evaluate "ExactSolution" function, or zero array
        m_equ[0]->EvaluateExactSolution(i, exactsoln, m_equ[0]->GetTime());
 
        NekDouble vL2Error   = m_equ[0]->L2Error(i, exactsoln);
        NekDouble vLinfError = m_equ[0]->LinfError(i, exactsoln);
 
        if (m_comm->GetRank() == 0)
        {
            out << "L 2 error (variable " << m_equ[0]->GetVariable(i)
                << ") : " << vL2Error << endl;
            out << "L inf error (variable " << m_equ[0]->GetVariable(i)
                << ") : " << vLinfError << endl;
        }
    }
}

References tinysimd::abs(), Nektar::MemoryManager< DataType >::AllocateSharedPtr(), ASSERTL0, Nektar::LibUtilities::eHexahedron, Nektar::LibUtilities::Timer::Elapsed(), Nektar::LibUtilities::eOrtho_A, Nektar::LibUtilities::eOrtho_B, Nektar::LibUtilities::eOrtho_C, Nektar::LibUtilities::ePrism, Nektar::LibUtilities::ePyramid, Nektar::LibUtilities::eQuadrilateral, Nektar::LibUtilities::eTetrahedron, Nektar::LibUtilities::eTriangle, Nektar::GlobalMapping::Mapping::Load(), Nektar::SolverUtils::Driver::m_comm, Nektar::SolverUtils::Driver::m_equ, Nektar::SolverUtils::Driver::m_graph, Nektar::SolverUtils::Driver::m_session, Nektar::GlobalMapping::MappingSharedPtr, Nektar::LibUtilities::P, Nektar::LibUtilities::ReduceMax, ReplaceExpansion(), Nektar::LibUtilities::Timer::Start(), Nektar::LibUtilities::Timer::Stop(), Nektar::SolverUtils::Driver::v_InitObject(), Vmath::Vmul(), Vmath::Vsub(), and Vmath::Vsum().

v_InitObject()

void Nektar::SolverUtils::DriverAdaptive::v_InitObject ( std::ostream &  out = std::cout )

overrideprotectedvirtual

Virtual function for initialisation implementation.

Reimplemented from Nektar::SolverUtils::Driver.

Definition at line 78 of file DriverAdaptive.cpp.

{
    Driver::v_InitObject(out);
}

References Nektar::SolverUtils::Driver::v_InitObject().

Friends And Related Function Documentation

MemoryManager< DriverAdaptive >

friend class MemoryManager< DriverAdaptive >

friend

Definition at line 1 of file DriverAdaptive.h.

Member Data Documentation

className

string Nektar::SolverUtils::DriverAdaptive::className

static

Initial value:

= GetDriverFactory().RegisterCreatorFunction(
    "Adaptive", DriverAdaptive::create)

Name of the class.

Definition at line 62 of file DriverAdaptive.h.

driverLookupId

string Nektar::SolverUtils::DriverAdaptive::driverLookupId

staticprotected

Initial value:

=
    LibUtilities::SessionReader::RegisterEnumValue("Driver", "Adaptive", 0)

Definition at line 80 of file DriverAdaptive.h.