CompareHdf5ResultsFiles.cpp

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#include "CompareHdf5ResultsFiles.hpp"
 
#include <iostream>
#include <vector>
#include "DistributedVectorFactory.hpp"
#include "Hdf5DataReader.hpp"
#include "petscvec.h"
 
bool CompareFilesViaHdf5DataReader(std::string pathname1, std::string filename1, bool makeAbsolute1,
                                   std::string pathname2, std::string filename2, bool makeAbsolute2,
                                   double tol, std::string datasetName)
{
    Hdf5DataReader reader1(pathname1, filename1, makeAbsolute1, datasetName);
    Hdf5DataReader reader2(pathname2, filename2, makeAbsolute2, datasetName);
 
    unsigned number_nodes1 = reader1.GetNumberOfRows();
    unsigned number_nodes2 = reader2.GetNumberOfRows();
    if (number_nodes1 != number_nodes2)
    {
        std::cout << "Number of nodes " << number_nodes1 << " and " << number_nodes2 << " don't match\n";
        return false;
    }
 
    // Check the variable names and units
    std::vector<std::string> variable_names1 = reader1.GetVariableNames();
    std::vector<std::string> variable_names2 = reader2.GetVariableNames();
    std::string unlimited_variable1 = reader1.GetUnlimitedDimensionName();
    std::string unlimited_variable2 = reader2.GetUnlimitedDimensionName();
    std::string unlimited_variable_unit1 = reader1.GetUnlimitedDimensionUnit();
    std::string unlimited_variable_unit2 = reader2.GetUnlimitedDimensionUnit();
 
    unsigned num_vars = variable_names1.size();
    if (num_vars != variable_names2.size())
    {
        std::cout << "Number of variables " << variable_names1.size()
                  << " and " << variable_names2.size() << " don't match\n";
        return false;
    }
    if (unlimited_variable1 != unlimited_variable2)
    {
        std::cout << "Unlimited variable names " << unlimited_variable1 << " and "
                  << unlimited_variable2 << " don't match\n";
        return false;
    }
    if (unlimited_variable_unit1 != unlimited_variable_unit2)
    {
        std::cout << "Unlimited variable units " << unlimited_variable_unit1 << " and "
                  << unlimited_variable_unit2 << " don't match\n";
        return false;
    }
    for (unsigned var = 0; var < num_vars; var++)
    {
        std::string var_name = variable_names1[var];
        if (var_name != variable_names2[var])
        {
            std::cout << "Variable names " << var_name << " and "
                      << variable_names2[var] << " don't match\n";
            return false;
        }
        if (reader1.GetUnit(var_name) != reader2.GetUnit(var_name))
        {
            std::cout << "Units names " << reader1.GetUnit(var_name)
                      << " and " << reader2.GetUnit(var_name) << " don't match\n";
            return false;
        }
    }
 
    // Check the timestep vectors
    std::vector<double> times1 = reader1.GetUnlimitedDimensionValues();
    std::vector<double> times2 = reader2.GetUnlimitedDimensionValues();
 
    if (times1.size() != times2.size())
    {
        std::cout << "Number of time steps " << times1.size()
                  << " and " << times2.size() << " don't match\n";
        return false;
    }
 
    for (unsigned timestep = 0; timestep < times1.size(); timestep++)
    {
        if (fabs(times1[timestep] - times2[timestep]) > 1e-8)
        {
            std::cout << "Time step " << timestep << " doesn't match. First file says " << times1[timestep]
                      << " and second says " << times2[timestep] << std::endl;
            return false;
        }
    }
 
    bool is_complete1 = reader1.IsDataComplete();
    bool is_complete2 = reader2.IsDataComplete();
 
    if (is_complete1 != is_complete2)
    {
        std::cout << "One of the readers has incomplete data and the other doesn't\n";
        return false;
    }
 
    if (is_complete1)
    {
        DistributedVectorFactory factory(number_nodes1);
 
        Vec data1 = factory.CreateVec();
        Vec data2 = factory.CreateVec();
 
        for (unsigned timestep = 0; timestep < times1.size(); timestep++)
        {
            for (unsigned var = 0; var < num_vars; var++)
            {
                reader1.GetVariableOverNodes(data1, variable_names1[var], timestep);
                reader2.GetVariableOverNodes(data2, variable_names2[var], timestep);
 
#if (PETSC_VERSION_MAJOR == 2 && PETSC_VERSION_MINOR == 2) //PETSc 2.2
                double minus_one = -1.0;
                VecAXPY(&minus_one, data2, data1);
#else
                //[note: VecAXPY(y,a,x) computes y = ax+y]
                VecAXPY(data1, -1.0, data2);
#endif
 
                PetscReal difference_norm;
                VecNorm(data1, NORM_2, &difference_norm);
 
                if (difference_norm > tol)
                {
                    std::cout << "Time " << times1[timestep] << ": vectors differ in NORM_2 by " << difference_norm << std::endl;
                    return false;
                }
            }
        }
        PetscTools::Destroy(data1);
        PetscTools::Destroy(data2);
    }
    else
    {
        // Incomplete data
 
        // Check the index vectors
        std::vector<unsigned> indices1 = reader1.GetIncompleteNodeMap();
        std::vector<unsigned> indices2 = reader2.GetIncompleteNodeMap();
 
        if (indices1.size() != indices2.size())
        {
            std::cout << "Index map sizes " << indices1.size() << " and " << indices2.size() << " don't match\n";
            return false;
        }
 
        for (unsigned index = 0; index < indices1.size(); index++)
        {
            if (indices1[index] != indices2[index])
            {
                std::cout << "Node indices " << indices1[index] << " and " << indices2[index] << " don't match\n";
                return false;
            }
        }
 
        // Check all the data
        for (unsigned index = 0; index < indices1.size(); index++)
        {
            unsigned node_index = indices1[index];
            for (unsigned var = 0; var < num_vars; var++)
            {
                std::vector<double> var_over_time1 = reader1.GetVariableOverTime(variable_names1[var], node_index);
                std::vector<double> var_over_time2 = reader2.GetVariableOverTime(variable_names1[var], node_index);
                for (unsigned time_step = 0; time_step < var_over_time1.size(); time_step++)
                {
                    if (fabs(var_over_time1[time_step] - var_over_time2[time_step]) > tol)
                    {
                        std::cout << "Node " << node_index << " at time step " << time_step << " variable " << variable_names1[var]
                                  << " differs (" << var_over_time1[time_step] << " != " << var_over_time2[time_step] << ")" << std::endl;
                        return false;
                    }
                }
            }
        }
    }
    return true;
}
 
bool CompareFilesViaHdf5DataReaderGlobalNorm(std::string pathname1, std::string filename1, bool makeAbsolute1,
                                             std::string pathname2, std::string filename2, bool makeAbsolute2,
                                             double tol, std::string datasetName)
{
    Hdf5DataReader reader1(pathname1, filename1, makeAbsolute1, datasetName);
    Hdf5DataReader reader2(pathname2, filename2, makeAbsolute2, datasetName);
 
    unsigned number_nodes1 = reader1.GetNumberOfRows();
    bool is_the_same = true;
    std::vector<std::string> variable_names1 = reader1.GetVariableNames();
    std::vector<std::string> variable_names2 = reader2.GetVariableNames();
    std::vector<double> times1 = reader1.GetUnlimitedDimensionValues();
    unsigned num_vars = variable_names1.size();
    DistributedVectorFactory factory(number_nodes1);
 
    Vec data1 = factory.CreateVec();
    Vec data2 = factory.CreateVec();
 
    for (unsigned timestep = 0; timestep < times1.size(); timestep++)
    {
        for (unsigned var = 0; var < num_vars; var++)
        {
            reader1.GetVariableOverNodes(data1, variable_names1[var], timestep);
            reader2.GetVariableOverNodes(data2, variable_names2[var], timestep);
 
            PetscReal data1_norm;
            PetscReal data2_norm;
            VecNorm(data1, NORM_2, &data1_norm);
            VecNorm(data2, NORM_2, &data2_norm);
            PetscReal norm = fabs(data1_norm - data2_norm);
            if (norm > tol)
            {
                is_the_same = false;
                std::cout << "Vectors differ in global NORM_2 by " << norm << std::endl;
            }
        }
    }
 
    PetscTools::Destroy(data1);
    PetscTools::Destroy(data2);
 
    return is_the_same;
}