1 /*$Id: MPI_Wtime.c,v 1.18 2001/08/29 20:59:42 balay Exp $*/ 2 3 #include "petsc.h" 4 5 #undef __FUNCT__ 6 #define __FUNCT__ "main" 7 int main(int argc,char **argv) 8 { 9 double x,y; 10 int ierr; 11 12 PetscInitialize(&argc,&argv,0,0); 13 /* To take care of paging effects */ 14 y = MPI_Wtime(); 15 16 x = 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(); 26 y = MPI_Wtime(); 27 28 fprintf(stdout,"%-15s : %e sec\n","MPI_Wtime",(y-x)/10.0); 29 y = MPI_Wtick(); 30 fprintf(stdout,"%-15s : %e sec\n","MPI_Wtick",y); 31 32 x = MPI_Wtime(); 33 ierr = PetscSleep(10);CHKERRQ(ierr); 34 y = MPI_Wtime(); 35 fprintf(stdout,"%-15s : %e sec - Slept for 10 sec \n","MPI_Wtime",(y-x)); 36 37 ierr = PetscFinalize();CHKERRQ(ierr); 38 PetscFunctionReturn(0); 39 } 40