1 2 #include <petscsys.h> 3 #include <petsctime.h> 4 5 int main(int argc,char **argv) 6 { 7 PetscLogDouble x,y; 8 PetscInt i; 9 PetscErrorCode ierr; 10 11 ierr = PetscInitialize(&argc,&argv,0,0);if (ierr) return ierr; 12 /* To take care of paging effects */ 13 CHKERRQ(PetscTime(&y)); 14 15 for (i=0; i<2; i++) { 16 CHKERRQ(PetscTime(&x)); 17 CHKERRQ(PetscTime(&y)); 18 CHKERRQ(PetscTime(&y)); 19 CHKERRQ(PetscTime(&y)); 20 CHKERRQ(PetscTime(&y)); 21 CHKERRQ(PetscTime(&y)); 22 CHKERRQ(PetscTime(&y)); 23 CHKERRQ(PetscTime(&y)); 24 CHKERRQ(PetscTime(&y)); 25 CHKERRQ(PetscTime(&y)); 26 CHKERRQ(PetscTime(&y)); 27 fprintf(stdout,"%-15s : %e sec\n","PetscTime",(y-x)/10.0); 28 } 29 30 ierr = PetscFinalize(); 31 return ierr; 32 } 33