#ifdef PETSC_RCS_HEADER static char vcid[] = "$Id: PetscGetCPUTime.c,v 1.1 1997/07/23 16:22:44 balay Exp bsmith $"; #endif #include "petsc.h" int main( int argc, char **argv) { PLogDouble x, y; long int i,j,A[100000]; PetscInitialize(&argc, &argv,0,0); /* To take care of paging effects */ y = PetscGetCPUTime(); for ( i=0; i<2; i++ ) { x = PetscGetCPUTime(); /* Do some work for at least 1 ms. Most CPU timers cannot measure anything less than that */ for (j=0; j<20000*(i+1); j++) { A[j]=i+j; } y = PetscGetCPUTime(); fprintf(stderr,"%-15s : %e sec\n","PetscGetCPUTime", (y-x)/10.0); } PetscFinalize(); PetscFunctionReturn(0); }