chundoong-lab-ta/APWS23/integral-skeleton/main.cpp

#include <cmath>
#include <cstdio>
#include <cstdlib>

#include "integral.h"
#include "util.h"

int main(int argc, char **argv) {
  size_t num_intervals = 1073741824;

  if (argc > 1) sscanf(argv[1], "%lu", &num_intervals);

  printf("Number of intervals: %lu\n", num_intervals);

  double cpu_st, cpu_en, gpu_st, gpu_en;

  cpu_st = get_current_time();
  double cpu_pi_estimate = integral_cpu(num_intervals);
  cpu_en = get_current_time();

  integral_gpu_initialize(num_intervals);
  gpu_st = get_current_time();
  double gpu_pi_estimate = integral_gpu(num_intervals);
  gpu_en = get_current_time();
  integral_gpu_finalize();

  printf("Estimated PI value from CPU: %.16f\n", cpu_pi_estimate);
  printf("Estimated PI value from GPU: %.16f\n", gpu_pi_estimate);

  printf("CPU elapsed time: %.3f sec\n", cpu_en - cpu_st);
  printf("GPU elapsed time: %.3f sec\n", gpu_en - gpu_st);

  return 0;
}