1*a5eb4965SSatish Balay #ifdef PETSC_RCS_HEADER 2*a5eb4965SSatish Balay static char vcid[] = "$Id: PetscMemzero.c,v 1.7 1997/03/09 18:00:35 bsmith 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 { 1047794344SBarry Smith PLogDouble x, y, z; 117fb9f68cSSatish Balay Scalar A[10000]; 12b0878937SSatish Balay 1377c4ece6SBarry Smith PetscInitialize(&argc, &argv,0,0); 14b0878937SSatish Balay /* To take care of paging effects */ 157fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 16b0878937SSatish Balay x = PetscGetTime(); 17b0878937SSatish Balay 18b0878937SSatish Balay x = PetscGetTime(); 197fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 207fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 217fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 227fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 237fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 247fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 257fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 267fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 277fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 287fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 29b0878937SSatish Balay y = PetscGetTime(); 307fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 317fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 327fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 337fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 347fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 357fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 367fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 377fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 387fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 397fb9f68cSSatish 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); 4477c4ece6SBarry Smith fprintf(stderr," %-11s : %e sec\n","Per Scalar",(2*y-x-z)/100000.0); 45b0878937SSatish Balay 46b0878937SSatish Balay PetscFinalize(); 47b0878937SSatish Balay return 0; 48b0878937SSatish Balay } 49