1*a5eb4965SSatish Balay #ifdef PETSC_RCS_HEADER 2*a5eb4965SSatish Balay static char vcid[] = "$Id: PetscMemcpy.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 int i; 127fb9f68cSSatish Balay Scalar A[10000], B[10000]; 13b0878937SSatish Balay 1477c4ece6SBarry Smith PetscInitialize(&argc, &argv,0,0); 15b0878937SSatish Balay for (i=0; i<10000; i++) { 16b0878937SSatish Balay A[i] = i%61897; 17b0878937SSatish Balay B[i] = i%61897; 18b0878937SSatish Balay } 19b0878937SSatish Balay /* To take care of paging effects */ 207fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 21b0878937SSatish Balay x = PetscGetTime(); 22b0878937SSatish Balay 23b0878937SSatish Balay x = PetscGetTime(); 247fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 257fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 267fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 277fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 287fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 297fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 307fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 317fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 327fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 337fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 34b0878937SSatish Balay y = PetscGetTime(); 357fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 367fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 377fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 387fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 397fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 407fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 417fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 427fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 437fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 447fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 45b0878937SSatish Balay z = PetscGetTime(); 46b0878937SSatish Balay 47b0878937SSatish Balay fprintf(stderr,"%s : \n","PetscMemcpy"); 48b0878937SSatish Balay fprintf(stderr," %-11s : %e sec\n","Latency",(z-y)/10.0); 497fb9f68cSSatish Balay fprintf(stderr," %-11s : %e sec\n","Per Scalar",(2*y-x-z)/100000.0); 50b0878937SSatish Balay 51b0878937SSatish Balay PetscFinalize(); 52b0878937SSatish Balay return 0; 53b0878937SSatish Balay } 54