Actual source code: MPI_Wtime.c

  1: /*$Id: MPI_Wtime.c,v 1.18 2001/08/29 20:59:42 balay Exp $*/

 3:  #include petsc.h

  5: int main(int argc,char **argv)
  6: {
  7:   double x,y;
  8:   int    ierr;
  9: 
 10:   PetscInitialize(&argc,&argv,0,0);
 11:  /* To take care of paging effects */
 12:   y = MPI_Wtime();

 14:   x = MPI_Wtime();
 15:   y = 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();

 26:   fprintf(stdout,"%-15s : %e secn","MPI_Wtime",(y-x)/10.0);
 27:   y = MPI_Wtick();
 28:   fprintf(stdout,"%-15s : %e secn","MPI_Wtick",y);

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

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