test_tb.c

#include <stdio.h>
#include <mpi.h>
#include "tournament.h"
#include <sys/time.h>

int main(int argc, char **argv)
{
	int process_number, total_number_of_processes;
	struct timeval start, end;
	int t1, t2;
	int t3, t4;
	gettimeofday(&start, NULL);
	t3 = start.tv_usec;
	MPI_Init(&argc, &argv);
  MPI_Comm_size(MPI_COMM_WORLD, &total_number_of_processes);
  MPI_Comm_rank(MPI_COMM_WORLD, &process_number);
	initialize_tournament_barrier(total_number_of_processes);
	printf("0-Hello World from processes %d of %d\n", process_number, total_number_of_processes);
	fflush(stdout);
	gettimeofday(&start, NULL);
	t1 = start.tv_usec;
	barrier();
	gettimeofday(&end, NULL);
	t2 = end.tv_usec;
	printf("0-Goodbye World from processes %d of %d\n", process_number, total_number_of_processes);
	fflush(stdout);
  MPI_Finalize();
	gettimeofday(&end, NULL);
	t4 = end.tv_usec;
	printf("Time spent on barrier: %d\n", t2-t1);
	printf("Total time elapsed: %d\n", t4-t3);
	return 0;
}