1d8e9fea7SSatish Balay #ifndef lint 2*7fb9f68cSSatish Balay static char vcid[] = "$Id: PetscMemzero.c,v 1.4 1996/03/08 16:05:00 balay Exp balay $"; 3d8e9fea7SSatish Balay #endif 4d8e9fea7SSatish Balay 5b0878937SSatish Balay #include "stdio.h" 6b0878937SSatish Balay #include "petsc.h" 7b0878937SSatish Balay 8b0878937SSatish Balay int main( int argc, char **argv) 9b0878937SSatish Balay { 10b0878937SSatish Balay double x, y,z; 11*7fb9f68cSSatish Balay Scalar A[10000]; 12b0878937SSatish Balay 13b0878937SSatish Balay PetscInitialize(&argc, &argv,0,0,0); 14b0878937SSatish Balay /* To take care of paging effects */ 15*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 16b0878937SSatish Balay x = PetscGetTime(); 17b0878937SSatish Balay 18b0878937SSatish Balay x = PetscGetTime(); 19*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 20*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 21*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 22*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 23*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 24*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 25*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 26*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 27*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 28*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 29b0878937SSatish Balay y = PetscGetTime(); 30*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 31*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 32*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 33*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 34*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 35*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 36*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 37*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 38*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 39*7fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 40b0878937SSatish Balay z = PetscGetTime(); 41b0878937SSatish Balay 42b0878937SSatish Balay fprintf(stderr,"%s : \n","PetscMemzero"); 43b0878937SSatish Balay fprintf(stderr," %-11s : %e sec\n","Latency",(z-y)/10.0); 44*7fb9f68cSSatish Balay fprintf(stderr," %-11s : %e sec\n","Per byte",(2*y-x-z)/100000.0); 45b0878937SSatish Balay 46b0878937SSatish Balay PetscFinalize(); 47b0878937SSatish Balay return 0; 48b0878937SSatish Balay } 49