2: #include <petscsys.h>

  6: int main(int argc,char **argv)
  7: {
  8:   double x,y;
  9:   int    ierr;

 11:   PetscInitialize(&argc,&argv,0,0);
 12:   /* To take care of paging effects */
 13:   y = MPI_Wtime();

 15:   x = MPI_Wtime();
 16:   y = MPI_Wtime();
 17:   y = MPI_Wtime();
 18:   y = MPI_Wtime();
 19:   y = MPI_Wtime();
 20:   y = MPI_Wtime();
 21:   y = MPI_Wtime();
 22:   y = MPI_Wtime();
 23:   y = MPI_Wtime();
 24:   y = MPI_Wtime();
 25:   y = MPI_Wtime();

 27:   fprintf(stdout,"%-15s : %e sec\n","MPI_Wtime",(y-x)/10.0);
 28:   y = MPI_Wtick();
 29:   fprintf(stdout,"%-15s : %e sec\n","MPI_Wtick",y);

 31:   x    = MPI_Wtime();
 32:   PetscSleep(10);
 33:   y    = MPI_Wtime();
 34:   fprintf(stdout,"%-15s : %e sec - Slept for 10 sec \n","MPI_Wtime",(y-x));

 36:   PetscFinalize();
 37:   return(0);
 38: }