Actual source code: PetscGetCPUTime.c
1: /*$Id: PetscGetCPUTime.c,v 1.12 2001/08/29 20:59:41 balay Exp $*/
3: #include petsc.h
5: int main(int argc,char **argv)
6: {
7: PetscLogDouble x,y;
8: long int i,j,A[100000],ierr;
9:
10: PetscInitialize(&argc,&argv,0,0);
11: /* To take care of paging effects */
12: PetscGetCPUTime(&y);
14: for (i=0; i<2; i++) {
15: PetscGetCPUTime(&x);
17: /*
18: Do some work for at least 1 ms. Most CPU timers
19: cannot measure anything less than that
20: */
21:
22: for (j=0; j<20000*(i+1); j++) {
23: A[j]=i+j;
24: }
25: PetscGetCPUTime(&y);
26: fprintf(stdout,"%-15s : %e secn","PetscGetCPUTime",(y-x)/10.0);
27: }
29: PetscFinalize();
30: return(0);
31: }