1*b0878937SSatish Balay #include "stdio.h" 2*b0878937SSatish Balay #include "petsc.h" 3*b0878937SSatish Balay 4*b0878937SSatish Balay int main( int argc, char **argv) 5*b0878937SSatish Balay { 6*b0878937SSatish Balay double x, y,z; 7*b0878937SSatish Balay int A[10000]; 8*b0878937SSatish Balay 9*b0878937SSatish Balay PetscInitialize(&argc, &argv,0,0,0); 10*b0878937SSatish Balay /* To take care of paging effects */ 11*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 12*b0878937SSatish Balay x = PetscGetTime(); 13*b0878937SSatish Balay 14*b0878937SSatish Balay x = PetscGetTime(); 15*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 16*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 17*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 18*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 19*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 20*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 21*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 22*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 23*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 24*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*10000); 25*b0878937SSatish Balay y = PetscGetTime(); 26*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 27*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 28*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 29*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 30*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 31*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 32*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 33*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 34*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 35*b0878937SSatish Balay PetscMemzero(A,sizeof(int)*0); 36*b0878937SSatish Balay z = PetscGetTime(); 37*b0878937SSatish Balay 38*b0878937SSatish Balay fprintf(stderr,"%s : \n","PetscMemzero"); 39*b0878937SSatish Balay fprintf(stderr," %-11s : %e sec\n","Latency",(z-y)/10.0); 40*b0878937SSatish Balay fprintf(stderr," %-11s : %e sec\n","Per byte",(2*y-x-z)/100000.0); 41*b0878937SSatish Balay 42*b0878937SSatish Balay PetscFinalize(); 43*b0878937SSatish Balay return 0; 44*b0878937SSatish Balay } 45