1b620a312SSatish Balay 24cd03b37SPatrick Sanan #include <petsctime.h> 3b620a312SSatish Balay 4b620a312SSatish Balay int main(int argc,char **argv) 5b620a312SSatish Balay { 6b0a32e0cSBarry Smith PetscLogDouble x,y; 7d3093643SSatish Balay long int i,j,A[100000],ierr; 8b620a312SSatish Balay 9a438ae71SBarry Smith ierr = PetscInitialize(&argc,&argv,0,0);if (ierr) return ierr; 10b620a312SSatish Balay /* To take care of paging effects */ 11*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscGetCPUTime(&y)); 12b620a312SSatish Balay 13b620a312SSatish Balay for (i=0; i<2; i++) { 14*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscGetCPUTime(&x)); 15b620a312SSatish Balay 16b620a312SSatish Balay /* 17b620a312SSatish Balay Do some work for at least 1 ms. Most CPU timers 18b620a312SSatish Balay cannot measure anything less than that 19b620a312SSatish Balay */ 20b620a312SSatish Balay 216f2b61bcSKarl Rupp for (j=0; j<20000*(i+1); j++) A[j]=i+j; 22*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscGetCPUTime(&y)); 23b4d8b9abSSatish Balay fprintf(stdout,"%-15s : %e sec\n","PetscGetCPUTime",(y-x)/10.0); 24b620a312SSatish Balay } 25b620a312SSatish Balay 26f3fe499bSBarry Smith ierr = PetscFinalize(); 2726f47effSBarry Smith return ierr; 28b620a312SSatish Balay } 29