Pushing everything again, accidentally deleted my remote repository

ex5/ex5_2/main.cpp

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+#include "mylib.h"
+#include <fstream>
+#include <iostream>
+#include <omp.h>
+#include <vector>
+using namespace std;
+
+
+int main()
+{
+    // read vector from file
+    vector<size_t> data_vector = {};
+
+    ifstream input_stream("data_1.txt"); 
+
+    size_t line;
+    while(input_stream >> line)
+    {
+        data_vector.push_back(line);
+    }
+    data_vector.shrink_to_fit();
+
+
+
+
+    // specify loops
+    size_t NLOOPS = 10000;
+
+
+
+    // ############# Parallelization with openMP #############
+    // calculate arithmetic mean, geometric mean and harmonic mean
+    double am_omp, gm_omp, hm_omp;
+
+    double tstart = omp_get_wtime();
+
+    for (size_t i = 0; i < NLOOPS; ++i)
+        means_omp(data_vector, am_omp, gm_omp, hm_omp);
+
+    double t_means_omp = (omp_get_wtime() - tstart)/NLOOPS;
+
+    // calculate minimum and maximum
+    size_t min, max;
+
+    tstart = omp_get_wtime();
+
+    for (size_t i = 0; i < NLOOPS; ++i)
+        minmax_omp(data_vector, min, max);
+
+    double t_minmax_omp = (omp_get_wtime() - tstart)/NLOOPS;
+
+
+
+    
+
+
+    // ############# Parallelization with C++ algorithms #############
+    // calculate arithmetic mean, geometric mean and harmonic mean
+    double am_cpp, gm_cpp, hm_cpp;
+
+    tstart = omp_get_wtime();
+
+    for (size_t i = 0; i < NLOOPS; ++i)
+        means_cpp(data_vector, am_cpp, gm_cpp, hm_cpp);
+
+    double t_means_cpp = (omp_get_wtime() - tstart)/NLOOPS;
+
+    // calculate minimum and maximum
+    size_t min_cpp, max_cpp;
+
+    tstart = omp_get_wtime();
+
+    for (size_t i = 0; i < NLOOPS; ++i)
+        minmax_cpp(data_vector, min_cpp, max_cpp);
+
+    double t_minmax_cpp = (omp_get_wtime() - tstart)/NLOOPS;
+
+
+
+
+
+    // print results
+    cout << "####### OpenMP #######" << endl;
+    cout << "minimum: " << min << endl;
+    cout << "maximum: " << max << endl;
+    cout << "duration: " << t_minmax_omp << endl << endl;
+
+    cout << "arithmetic mean: " << am_omp << endl;
+    cout << "geometric mean: " << gm_omp << endl;
+    cout << "harmonic mean: " << hm_omp << endl;
+    cout << "duration: " << t_means_omp << endl << endl;
+
+
+    cout << "####### C++ #######" << endl;
+    cout << "minimum: " << min_cpp << endl;
+    cout << "maximum: " << max_cpp << endl;
+    cout << "duration: " << t_minmax_cpp << endl << endl;
+
+    cout << "arithmetic mean: " << am_cpp << endl;
+    cout << "geometric mean: " << gm_cpp << endl;
+    cout << "harmonic mean: " << hm_cpp << endl;
+    cout << "duration: " << t_means_cpp << endl << endl;
+
+
+
+    // ####### OpenMP #######
+    // minimum: 1
+    // maximum: 1000
+    // duration: 3.52086e-06
+
+    // arithmetic mean: 498.184
+    // geometric mean: 364.412
+    // harmonic mean: 95.6857
+    // duration: 5.90171e-06
+
+    // ####### C++ #######
+    // minimum: 1
+    // maximum: 1000
+    // duration: 1.76816e-05
+
+    // arithmetic mean: 498.184
+    // geometric mean: 364.412
+    // harmonic mean: 95.6857
+    // duration: 2.35728e-05
+
+    // --> the openMP variant is faster in both cases
+
+
+    return 0;
+}