Nektar::FieldUtils::OutputFileBase Class Reference

Converter from fld to vtk. More...

#include <OutputFileBase.h>

Inheritance diagram for Nektar::FieldUtils::OutputFileBase:

Public Member Functions
	OutputFileBase (FieldSharedPtr f)
	~OutputFileBase () override
Public Member Functions inherited from Nektar::FieldUtils::OutputModule
	OutputModule (FieldSharedPtr p_f)
FIELD_UTILS_EXPORT void	OpenStream ()
	Open a file for output.
Public Member Functions inherited from Nektar::FieldUtils::Module
FIELD_UTILS_EXPORT	Module (FieldSharedPtr p_f)
virtual	~Module ()=default
void	Process (po::variables_map &vm)
std::string	GetModuleName ()
std::string	GetModuleDescription ()
const ConfigOption &	GetConfigOption (const std::string &key) const
ModulePriority	GetModulePriority ()
std::vector< ModuleKey >	GetModulePrerequisites ()
FIELD_UTILS_EXPORT void	RegisterConfig (std::string key, std::string value="")
	Register a configuration option with a module.
FIELD_UTILS_EXPORT void	PrintConfig ()
	Print out all configuration options for a module.
FIELD_UTILS_EXPORT void	SetDefaults ()
	Sets default configuration options for those which have not been set.
FIELD_UTILS_EXPORT void	AddFile (std::string fileType, std::string fileName)
FIELD_UTILS_EXPORT void	EvaluateTriFieldAtEquiSpacedPts (LocalRegions::ExpansionSharedPtr &exp, const Array< OneD, const NekDouble > &infield, Array< OneD, NekDouble > &outfield)

Protected Member Functions
void	v_Process (po::variables_map &vm) override
	Write fld to output file.
std::string	v_GetModuleName () override
std::string	v_GetModuleDescription () override
ModulePriority	v_GetModulePriority () override
virtual void	v_OutputFromPts (po::variables_map &vm)=0
	Write from pts to output file.
virtual void	v_OutputFromExp (po::variables_map &vm)=0
	Write from m_exp to output file.
virtual void	v_OutputFromData (po::variables_map &vm)=0
	Write from data to output file.
virtual fs::path	v_GetPath (std::string &filename, po::variables_map &vm)
fs::path	GetPath (std::string &filename, po::variables_map &vm)
virtual fs::path	v_GetFullOutName (std::string &filename, po::variables_map &vm)
fs::path	GetFullOutName (std::string &filename, po::variables_map &vm)
Protected Member Functions inherited from Nektar::FieldUtils::Module
	Module ()
virtual std::vector< ModuleKey >	v_GetModulePrerequisites ()

Protected Attributes
bool	m_requireEquiSpaced
bool	m_prohibitWrite = false
bool	m_equispacedSetup = false
Protected Attributes inherited from Nektar::FieldUtils::OutputModule
std::ofstream	m_fldFile
	Output stream.
Protected Attributes inherited from Nektar::FieldUtils::Module
std::map< std::string, ConfigOption >	m_config
	List of configuration values.
std::set< std::string >	m_allowedFiles
	List of allowed file formats.

Private Member Functions
bool	WriteFile (std::string &filename, po::variables_map &vm)
void	ConvertExpToEquispaced (po::variables_map &vm)
void	PrintErrorFromPts ()
void	PrintErrorFromExp ()

Additional Inherited Members
Public Attributes inherited from Nektar::FieldUtils::Module
FieldSharedPtr	m_f
	Field object.

Detailed Description

Converter from fld to vtk.

Definition at line 45 of file OutputFileBase.h.

Constructor & Destructor Documentation

OutputFileBase()

Nektar::FieldUtils::OutputFileBase::OutputFileBase

(

FieldSharedPtr

f

)

Definition at line 48 of file OutputFileBase.cpp.

                                               : OutputModule(f)
{
    m_requireEquiSpaced            = false;
    m_prohibitWrite                = false;
    m_config["writemultiplefiles"] = ConfigOption(
        true, "0",
        "Write multiple files in parallel or when using nparts option");
}

References Nektar::FieldUtils::Module::m_config, m_prohibitWrite, and m_requireEquiSpaced.

~OutputFileBase()

Nektar::FieldUtils::OutputFileBase::~OutputFileBase ( )

override

Definition at line 57 of file OutputFileBase.cpp.

{
}

Member Function Documentation

ConvertExpToEquispaced()

void Nektar::FieldUtils::OutputFileBase::ConvertExpToEquispaced ( po::variables_map &  vm )

private

Definition at line 365 of file OutputFileBase.cpp.

{
    // Information to create new expansion
    int numFields   = m_f->m_exp.size();
    m_f->m_fielddef = m_f->m_exp[0]->GetFieldDefinitions();
 
    // Set points to equispaced
    int nPointsNew = 0;
    if (vm.count("output-points"))
    {
        nPointsNew = vm["output-points"].as<int>();
    }
    m_f->m_graph->SetExpansionInfoToEvenlySpacedPoints(nPointsNew);
 
    // Save original expansion
    vector<MultiRegions::ExpListSharedPtr> expOld = m_f->m_exp;
 
    // Create new expansion
    m_f->m_exp[0] = m_f->SetUpFirstExpList(m_f->m_numHomogeneousDir, true);
    for (int i = 1; i < numFields; ++i)
    {
        m_f->m_exp[i] = m_f->AppendExpList(m_f->m_numHomogeneousDir);
    }
 
    // Extract result to new expansion
    for (int i = 0; i < numFields; ++i)
    {
        m_f->m_exp[i]->ExtractCoeffsToCoeffs(expOld[i], expOld[i]->GetCoeffs(),
                                             m_f->m_exp[i]->UpdateCoeffs());
        m_f->m_exp[i]->BwdTrans(m_f->m_exp[i]->GetCoeffs(),
                                m_f->m_exp[i]->UpdatePhys());
    }
 
    // Extract boundary expansion if needed
    if (m_f->m_writeBndFld)
    {
        Array<OneD, const MultiRegions::ExpListSharedPtr> BndExpOld;
        MultiRegions::ExpListSharedPtr BndExp;
 
        for (int i = 0; i < numFields; ++i)
        {
            BndExpOld = expOld[i]->GetBndCondExpansions();
            for (int j = 0; j < BndExpOld.size(); ++j)
            {
                BndExp = m_f->m_exp[i]->UpdateBndCondExpansion(j);
                BndExp->ExtractCoeffsToCoeffs(BndExpOld[j],
                                              BndExpOld[j]->GetCoeffs(),
                                              BndExp->UpdateCoeffs());
            }
        }
    }
 
    m_f->m_fielddef = std::vector<LibUtilities::FieldDefinitionsSharedPtr>();
 
    // Make a note so that we know that the fielddefs have now been setup.
    m_equispacedSetup = true;
}

References m_equispacedSetup, and Nektar::FieldUtils::Module::m_f.

Referenced by v_Process().

GetFullOutName()

fs::path Nektar::FieldUtils::OutputFileBase::GetFullOutName ( std::string &  filename, po::variables_map &  vm  )

inlineprotected

Definition at line 96 of file OutputFileBase.h.

    {
        return v_GetFullOutName(filename, vm);
    }

References v_GetFullOutName().

Referenced by Nektar::FieldUtils::OutputVtkBase::PrepareOutput(), WriteFile(), and Nektar::FieldUtils::OutputTecplot::WriteTecplotFile().

GetPath()

fs::path Nektar::FieldUtils::OutputFileBase::GetPath ( std::string &  filename, po::variables_map &  vm  )

inlineprotected

Definition at line 85 of file OutputFileBase.h.

    {
        return v_GetPath(filename, vm);
    }

References v_GetPath().

Referenced by Nektar::FieldUtils::OutputVtkBase::PrepareOutput(), Nektar::FieldUtils::OutputTecplot::v_GetFullOutName(), Nektar::FieldUtils::OutputVtkBase::v_GetFullOutName(), WriteFile(), and Nektar::FieldUtils::OutputVtkBase::WritePVtu().

PrintErrorFromExp()

void Nektar::FieldUtils::OutputFileBase::PrintErrorFromExp ( )

private

Definition at line 468 of file OutputFileBase.cpp.

{
    int coordim =
        m_f->m_exp[0]->GetExp(0)->GetCoordim() + m_f->m_numHomogeneousDir;
    int totpoints           = m_f->m_exp[0]->GetTotPoints();
    std::string coordVars[] = {"x", "y", "z"};
 
    // Set up storage for coordinates
    Array<OneD, Array<OneD, NekDouble>> coords(coordim);
    for (int i = 0; i < coordim; ++i)
    {
        coords[i] = Array<OneD, NekDouble>(totpoints);
    }
 
    // Get coordinates
    if (coordim == 1)
    {
        m_f->m_exp[0]->GetCoords(coords[0]);
    }
    else if (coordim == 2)
    {
        m_f->m_exp[0]->GetCoords(coords[0], coords[1]);
    }
    else
    {
        m_f->m_exp[0]->GetCoords(coords[0], coords[1], coords[2]);
    }
 
    for (int j = 0; j < coordim; ++j)
    {
        NekDouble l2err   = m_f->m_exp[0]->L2(coords[j]);
        NekDouble linferr = m_f->m_exp[0]->Linf(coords[j]);
 
        if (m_f->m_comm->GetSpaceComm()->TreatAsRankZero())
        {
            cout << "L 2 error (variable " << coordVars[j] << ") : " << l2err
                 << endl;
 
            cout << "L inf error (variable " << coordVars[j]
                 << ") : " << linferr << endl;
        }
    }
 
    for (int j = 0; j < m_f->m_exp.size(); ++j)
    {
        NekDouble l2err   = m_f->m_exp[j]->L2(m_f->m_exp[j]->GetPhys());
        NekDouble linferr = m_f->m_exp[j]->Linf(m_f->m_exp[j]->GetPhys());
 
        if (m_f->m_comm->GetSpaceComm()->TreatAsRankZero() &&
            m_f->m_variables.size() > 0)
        {
            cout << "L 2 error (variable " << m_f->m_variables[j]
                 << ") : " << l2err << endl;
 
            cout << "L inf error (variable " << m_f->m_variables[j]
                 << ") : " << linferr << endl;
        }
    }
}

References Nektar::FieldUtils::Module::m_f.

Referenced by v_Process().

PrintErrorFromPts()

void Nektar::FieldUtils::OutputFileBase::PrintErrorFromPts ( )

private

Definition at line 423 of file OutputFileBase.cpp.

{
    int coordim             = m_f->m_fieldPts->GetDim();
    std::string coordVars[] = {"x", "y", "z"};
 
    vector<string> variables = m_f->m_variables;
    variables.insert(variables.begin(), coordVars, coordVars + coordim);
    // Get fields and coordinates
    Array<OneD, Array<OneD, NekDouble>> fields(variables.size());
 
    // We can just grab everything from points. This should be a
    // reference, not a copy.
    m_f->m_fieldPts->GetPts(fields);
    for (int i = 0; i < fields.size(); ++i)
    {
        // calculate L2 and Linf value
        int npts = fields[i].size();
 
        NekDouble l2err   = 0.0;
        NekDouble linferr = 0.0;
        for (int j = 0; j < npts; ++j)
        {
            l2err += fields[i][j] * fields[i][j];
            linferr = max(linferr, fabs(fields[i][j]));
        }
 
        m_f->m_comm->GetSpaceComm()->AllReduce(l2err, LibUtilities::ReduceSum);
        m_f->m_comm->GetSpaceComm()->AllReduce(npts, LibUtilities::ReduceSum);
        m_f->m_comm->GetSpaceComm()->AllReduce(linferr,
                                               LibUtilities::ReduceMax);
 
        l2err /= npts;
        l2err = sqrt(l2err);
 
        if (m_f->m_comm->GetSpaceComm()->TreatAsRankZero())
        {
            cout << "L 2 error (variable " << variables[i] << ") : " << l2err
                 << endl;
 
            cout << "L inf error (variable " << variables[i]
                 << ") : " << linferr << endl;
        }
    }
}

References Nektar::FieldUtils::Module::m_f, tinysimd::max(), Nektar::LibUtilities::ReduceMax, Nektar::LibUtilities::ReduceSum, and tinysimd::sqrt().

Referenced by v_Process().

v_GetFullOutName()

virtual fs::path Nektar::FieldUtils::OutputFileBase::v_GetFullOutName ( std::string &  filename, po::variables_map &  vm  )

inlineprotectedvirtual

Reimplemented in Nektar::FieldUtils::OutputFld, Nektar::FieldUtils::OutputPts, Nektar::FieldUtils::OutputTecplot, and Nektar::FieldUtils::OutputVtkBase.

Definition at line 90 of file OutputFileBase.h.

    {
        NEKERROR(ErrorUtil::efatal, "v_OutputFromExp not coded");
        return fs::path();
    }

References Nektar::ErrorUtil::efatal, and NEKERROR.

Referenced by GetFullOutName().

v_GetModuleDescription()

std::string Nektar::FieldUtils::OutputFileBase::v_GetModuleDescription ( )

inlineoverrideprotectedvirtual

Reimplemented from Nektar::FieldUtils::Module.

Definition at line 60 of file OutputFileBase.h.

    {
        return "Writing file";
    }

v_GetModuleName()

std::string Nektar::FieldUtils::OutputFileBase::v_GetModuleName ( )

inlineoverrideprotectedvirtual

Reimplemented from Nektar::FieldUtils::Module.

Reimplemented in Nektar::FieldUtils::OutputVtk, Nektar::FieldUtils::OutputFld, Nektar::FieldUtils::OutputPts, Nektar::FieldUtils::OutputTecplot, and Nektar::FieldUtils::OutputVtkBase.

Definition at line 55 of file OutputFileBase.h.

    {
        return "OutputFileBase";
    }

v_GetModulePriority()

ModulePriority Nektar::FieldUtils::OutputFileBase::v_GetModulePriority ( )

inlineoverrideprotectedvirtual

Reimplemented from Nektar::FieldUtils::Module.

Definition at line 65 of file OutputFileBase.h.

    {
        return eOutput;
    }

References Nektar::FieldUtils::eOutput.

v_GetPath()

virtual fs::path Nektar::FieldUtils::OutputFileBase::v_GetPath ( std::string &  filename, po::variables_map &  vm  )

inlineprotectedvirtual

Reimplemented in Nektar::FieldUtils::OutputFld, Nektar::FieldUtils::OutputPts, Nektar::FieldUtils::OutputTecplot, and Nektar::FieldUtils::OutputVtkBase.

Definition at line 79 of file OutputFileBase.h.

    {
        NEKERROR(ErrorUtil::efatal, "v_GetPath not coded");
        return fs::path();
    }

References Nektar::ErrorUtil::efatal, and NEKERROR.

Referenced by GetPath().

v_OutputFromData()

virtual void Nektar::FieldUtils::OutputFileBase::v_OutputFromData ( po::variables_map &  vm )

protectedpure virtual

Write from data to output file.

Implemented in Nektar::FieldUtils::OutputVtk, Nektar::FieldUtils::OutputFld, Nektar::FieldUtils::OutputPts, Nektar::FieldUtils::OutputTecplot, and Nektar::FieldUtils::OutputVtkBase.

Referenced by v_Process().

v_OutputFromExp()

virtual void Nektar::FieldUtils::OutputFileBase::v_OutputFromExp ( po::variables_map &  vm )

protectedpure virtual

Write from m_exp to output file.

Implemented in Nektar::FieldUtils::OutputVtk, Nektar::FieldUtils::OutputFld, Nektar::FieldUtils::OutputPts, Nektar::FieldUtils::OutputTecplot, and Nektar::FieldUtils::OutputVtkBase.

Referenced by v_Process().

v_OutputFromPts()

virtual void Nektar::FieldUtils::OutputFileBase::v_OutputFromPts ( po::variables_map &  vm )

protectedpure virtual

Write from pts to output file.

Implemented in Nektar::FieldUtils::OutputVtk, Nektar::FieldUtils::OutputFld, Nektar::FieldUtils::OutputPts, Nektar::FieldUtils::OutputTecplot, and Nektar::FieldUtils::OutputVtkBase.

Referenced by v_Process().

v_Process()

void Nektar::FieldUtils::OutputFileBase::v_Process ( po::variables_map &  vm )

overrideprotectedvirtual

Write fld to output file.

Reimplemented from Nektar::FieldUtils::Module.

Reimplemented in Nektar::FieldUtils::OutputTecplot.

Definition at line 61 of file OutputFileBase.cpp.

{
    string filename = m_config["outfile"].as<string>();
 
    if (filename == "")
    {
        m_prohibitWrite = true;
    }
 
    if (m_f->m_fieldPts != LibUtilities::NullPtsField)
    {
        m_f->SetUpExp(vm);
 
        ASSERTL0(!m_f->m_writeBndFld, "Boundary can't be obtained from pts.");
        if (WriteFile(filename, vm))
        {
            v_OutputFromPts(vm);
 
            if (vm.count("error"))
            {
                PrintErrorFromPts();
            }
        }
    }
    else
    {
        // reset expansion definition to use equispaced points if required.
        if (m_requireEquiSpaced && (vm.count("no-equispaced") == 0) &&
            m_f->m_graph->GetNumElements() != 0 && !m_equispacedSetup)
        {
            if (m_f->m_exp.size())
            {
                ConvertExpToEquispaced(vm);
            }
            else
            {
                m_f->SetUpExp(vm, true);
                m_equispacedSetup = true;
            }
        }
        else
        {
            m_f->SetUpExp(vm);
        }
        if (!m_f->m_exp.size())
        {
            if (m_f->m_data.size())
            {
                ASSERTL0(!m_f->m_writeBndFld,
                         "Boundary extraction requires xml file.");
                if (WriteFile(filename, vm))
                {
                    v_OutputFromData(vm);
                }
            }
            return;
        }
        if (m_f->m_writeBndFld)
        {
            if (m_f->m_verbose &&
                m_f->m_comm->GetSpaceComm()->TreatAsRankZero())
            {
                cout << "\t" << GetModuleName()
                     << ": Writing boundary file(s): ";
                for (int i = 0; i < m_f->m_bndRegionsToWrite.size(); ++i)
                {
                    cout << m_f->m_bndRegionsToWrite[i];
                    if (i < m_f->m_bndRegionsToWrite.size() - 1)
                    {
                        cout << ", ";
                    }
                }
                cout << endl;
            }
 
            int nfields = m_f->m_variables.size();
            int normdim = m_f->m_graph->GetMeshDimension();
 
            // Prepare for normals output
            if (m_f->m_addNormals)
            {
                // Prepare for creating expansions for normals
                m_f->m_exp.resize(nfields + normdim);
 
                // Include normal name in m_variables
                string normstr[3] = {"Norm_x", "Norm_y", "Norm_z"};
                for (int j = 0; j < normdim; ++j)
                {
                    m_f->m_exp[nfields + j] =
                        m_f->AppendExpList(m_f->m_numHomogeneousDir);
                    m_f->m_variables.push_back(normstr[j]);
                }
            }
 
            // Move m_exp to a new expansion vector
            vector<MultiRegions::ExpListSharedPtr> exp(m_f->m_exp.size());
            exp.swap(m_f->m_exp);
 
            Array<OneD, Array<OneD, const MultiRegions::ExpListSharedPtr>>
                BndExp(exp.size());
            for (int i = 0; i < exp.size(); ++i)
            {
                BndExp[i] = exp[i]->GetBndCondExpansions();
            }
 
            // get hold of partition boundary regions so we can match it to
            // desired region extraction
            SpatialDomains::BoundaryConditions bcs(m_f->m_session,
                                                   exp[0]->GetGraph());
            const SpatialDomains::BoundaryRegionCollection bregions =
                bcs.GetBoundaryRegions();
            map<int, int> BndRegionMap;
            map<int, LibUtilities::CommSharedPtr> BndRegionComm;
 
            // when using extract we may not have defined all boundary regions
            // so identify that here
            std::set<int> ProcessBnd;
            if (m_f->m_session->DefinesTag("CreateBndRegions"))
            {
                // evaluate bnd regions to be generated
                vector<unsigned int> bndRegions;
                ASSERTL0(
                    ParseUtils::GenerateVector(
                        m_f->m_session->GetTag("CreateBndRegions"), bndRegions),
                    "Failed to interpret bnd values string");
 
                for (auto &bnd : bndRegions)
                {
                    if (bregions.count(bnd) == 1)
                    {
                        ProcessBnd.insert(bnd);
                    }
                }
            }
            else
            {
                for (auto &it : bregions)
                {
                    ProcessBnd.insert(it.first);
                }
            }
 
            int cnt = 0;
            for (auto &breg_it : bregions)
            {
                if (ProcessBnd.count(breg_it.first))
                {
                    BndRegionMap[breg_it.first] = cnt++;
                    BndRegionComm[breg_it.first] =
                        bcs.GetBoundaryCommunicators()[breg_it.first];
                }
            }
 
            // find ending of output file and insert _b1, _b2
            int dot     = filename.find_last_of('.') + 1;
            string ext  = filename.substr(dot, filename.length() - dot);
            string name = filename.substr(0, dot - 1);
 
            // Store temporary communicator
            LibUtilities::CommSharedPtr tmpComm = m_f->m_comm;
 
            for (int i = 0; i < m_f->m_bndRegionsToWrite.size(); ++i)
            {
                string outname = name + "_b" +
                                 std::to_string(m_f->m_bndRegionsToWrite[i]) +
                                 "." + ext;
 
                if (!WriteFile(outname, vm))
                {
                    continue;
                }
                RegisterConfig("outfile", outname);
 
                if (BndRegionMap.count(m_f->m_bndRegionsToWrite[i]) == 1)
                {
                    m_f->m_comm = BndRegionComm[m_f->m_bndRegionsToWrite[i]];
 
                    int Border = BndRegionMap[m_f->m_bndRegionsToWrite[i]];
 
                    // set up m_exp to point to boundary expansion
                    for (int j = 0; j < exp.size(); ++j)
                    {
                        m_f->m_exp[j] = BndExp[j][Border];
                    }
 
                    for (int j = 0; j < exp.size(); ++j)
                    {
                        m_f->m_exp[j] = BndExp[j][Border];
                        m_f->m_exp[j]->BwdTrans(m_f->m_exp[j]->GetCoeffs(),
                                                m_f->m_exp[j]->UpdatePhys());
                    }
 
                    if (m_f->m_addNormals)
                    {
                        // Get normals
                        Array<OneD, Array<OneD, NekDouble>> NormPhys;
                        exp[0]->GetBoundaryNormals(Border, NormPhys);
 
                        // add normal coefficients to expansions
                        for (int j = 0; j < normdim; ++j)
                        {
                            m_f->m_exp[nfields + j] =
                                BndExp[nfields + j][Border];
                            Vmath::Vcopy(
                                m_f->m_exp[nfields + j]->GetTotPoints(),
                                NormPhys[j], 1,
                                m_f->m_exp[nfields + j]->UpdatePhys(), 1);
                            m_f->m_exp[nfields + j]->FwdTransLocalElmt(
                                m_f->m_exp[nfields + j]->GetPhys(),
                                m_f->m_exp[nfields + j]->UpdateCoeffs());
                        }
                    }
                    v_OutputFromExp(vm);
                    // output error for regression checking.
                    if (vm.count("error"))
                    {
                        PrintErrorFromExp();
                    }
 
                    // Reset communicator
                    m_f->m_comm = tmpComm;
                }
 
                // put outfile back to filename in case of nparts option
                RegisterConfig("outfile", filename);
            }
            // Restore m_exp
            exp.swap(m_f->m_exp);
        }
        else
        {
            if (WriteFile(filename, vm))
            {
                v_OutputFromExp(vm);
                // output error for regression checking.
                if (vm.count("error"))
                {
                    PrintErrorFromExp();
                }
            }
        }
    }
}

References ASSERTL0, ConvertExpToEquispaced(), Nektar::ParseUtils::GenerateVector(), Nektar::SpatialDomains::BoundaryConditions::GetBoundaryCommunicators(), Nektar::SpatialDomains::BoundaryConditions::GetBoundaryRegions(), Nektar::FieldUtils::Module::GetModuleName(), Nektar::FieldUtils::Module::m_config, m_equispacedSetup, Nektar::FieldUtils::Module::m_f, m_prohibitWrite, m_requireEquiSpaced, Nektar::LibUtilities::NullPtsField, PrintErrorFromExp(), PrintErrorFromPts(), Nektar::FieldUtils::Module::RegisterConfig(), v_OutputFromData(), v_OutputFromExp(), v_OutputFromPts(), Vmath::Vcopy(), and WriteFile().

Referenced by Nektar::FieldUtils::OutputTecplot::v_Process().

WriteFile()

bool Nektar::FieldUtils::OutputFileBase::WriteFile ( std::string &  filename, po::variables_map &  vm  )

private

Definition at line 305 of file OutputFileBase.cpp.

{
    if (m_prohibitWrite)
    {
        return true;
    }
 
    // Get path to file. If procid was defined, get the full name to avoid
    // checking files from other partitions
    fs::path outFile;
    if (vm.count("nparts"))
    {
        outFile = GetFullOutName(filename, vm);
    }
    else
    {
        outFile = GetPath(filename, vm);
    }
 
    LibUtilities::CommSharedPtr comm;
    if (m_f->m_comm)
    {
        comm = m_f->m_comm;
    }
    else
    {
        comm = LibUtilities::GetCommFactory().CreateInstance("Serial", 0, 0);
    }
 
    int count = fs::exists(outFile) ? 1 : 0;
    comm->GetSpaceComm()->AllReduce(count, LibUtilities::ReduceSum);
 
    int writeFile = 1;
    if (count && (vm.count("force-output") == 0))
    {
        if (vm.count("nparts") == 0) // do not do check if --nparts is enabled.
        {
            writeFile = 0; // set to zero for reduce all to be correct.
 
            if (comm->GetSpaceComm()->TreatAsRankZero())
            {
                string answer;
                cout << "Did you wish to overwrite " << outFile << " (y/n)? ";
                getline(cin, answer);
                if (answer.compare("y") == 0)
                {
                    writeFile = 1;
                }
                else
                {
                    cout << "Not writing file '" << filename
                         << "' because it already exists" << endl;
                }
            }
            comm->GetSpaceComm()->AllReduce(writeFile, LibUtilities::ReduceSum);
        }
    }
    return (writeFile == 0) ? false : true;
}

References Nektar::LibUtilities::NekFactory< tKey, tBase, tParam >::CreateInstance(), Nektar::LibUtilities::GetCommFactory(), GetFullOutName(), GetPath(), Nektar::FieldUtils::Module::m_f, m_prohibitWrite, and Nektar::LibUtilities::ReduceSum.

Referenced by v_Process().

Member Data Documentation

m_equispacedSetup

bool Nektar::FieldUtils::OutputFileBase::m_equispacedSetup = false

protected

Definition at line 103 of file OutputFileBase.h.

Referenced by ConvertExpToEquispaced(), and v_Process().

m_prohibitWrite

bool Nektar::FieldUtils::OutputFileBase::m_prohibitWrite = false

protected

Definition at line 102 of file OutputFileBase.h.

Referenced by Nektar::FieldUtils::OutputVtk::AddFieldDataToVTKHighOrder(), Nektar::FieldUtils::OutputVtk::AddFieldDataToVTKLowOrder(), OutputFileBase(), Nektar::FieldUtils::OutputVtk::OutputFromExpLowOrderMultiBlock(), Nektar::FieldUtils::OutputVtk::v_OutputFromExp(), v_Process(), and WriteFile().

m_requireEquiSpaced

bool Nektar::FieldUtils::OutputFileBase::m_requireEquiSpaced

protected

Definition at line 101 of file OutputFileBase.h.

Referenced by OutputFileBase(), Nektar::FieldUtils::OutputTecplot::OutputTecplot(), Nektar::FieldUtils::OutputVtk::OutputVtk(), Nektar::FieldUtils::OutputVtkBase::OutputVtkBase(), and v_Process().