1a5eb4965SSatish Balay #ifdef PETSC_RCS_HEADER 2*5a655dc6SBarry Smith static char vcid[] = "$Id: PetscMemzero.c,v 1.10 1998/03/31 23:33:59 balay Exp bsmith $"; 3d8e9fea7SSatish Balay #endif 4d8e9fea7SSatish Balay 5b0878937SSatish Balay #include "petsc.h" 6b0878937SSatish Balay 7*5a655dc6SBarry Smith #undef __FUNC__ 8*5a655dc6SBarry Smith #define __FUNC__ "main" 9b0878937SSatish Balay int main( int argc, char **argv) 10b0878937SSatish Balay { 1147794344SBarry Smith PLogDouble x, y, z; 127fb9f68cSSatish Balay Scalar A[10000]; 13d3093643SSatish Balay int ierr; 14b0878937SSatish Balay 1577c4ece6SBarry Smith PetscInitialize(&argc, &argv,0,0); 16b0878937SSatish Balay /* To take care of paging effects */ 177fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 18d3093643SSatish Balay ierr = PetscGetTime(&x); CHKERRA(ierr); 19b0878937SSatish Balay 20d3093643SSatish Balay ierr = PetscGetTime(&x); CHKERRA(ierr); 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); 297fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 307fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*10000); 31d3093643SSatish Balay ierr = PetscGetTime(&y); CHKERRA(ierr); 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); 407fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 417fb9f68cSSatish Balay PetscMemzero(A,sizeof(Scalar)*0); 42d3093643SSatish Balay ierr = PetscGetTime(&z); CHKERRA(ierr); 43b0878937SSatish Balay 44b0878937SSatish Balay fprintf(stderr,"%s : \n","PetscMemzero"); 45b0878937SSatish Balay fprintf(stderr," %-11s : %e sec\n","Latency",(z-y)/10.0); 4677c4ece6SBarry Smith fprintf(stderr," %-11s : %e sec\n","Per Scalar",(2*y-x-z)/100000.0); 47b0878937SSatish Balay 48b0878937SSatish Balay PetscFinalize(); 493a40ed3dSBarry Smith PetscFunctionReturn(0); 50b0878937SSatish Balay } 51