1d8e9fea7SSatish Balay #ifndef lint 2*7fb9f68cSSatish Balay static char vcid[] = "$Id: PetscMemcpy.c,v 1.4 1996/03/08 16:01:13 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 int i; 12*7fb9f68cSSatish Balay Scalar A[10000], B[10000]; 13b0878937SSatish Balay 14b0878937SSatish Balay PetscInitialize(&argc, &argv,0,0,0); 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 */ 20*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 21b0878937SSatish Balay x = PetscGetTime(); 22b0878937SSatish Balay 23b0878937SSatish Balay x = PetscGetTime(); 24*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 25*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 26*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 27*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 28*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 29*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 30*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 31*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 32*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 33*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*10000); 34b0878937SSatish Balay y = PetscGetTime(); 35*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 36*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 37*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 38*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 39*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 40*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 41*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 42*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 43*7fb9f68cSSatish Balay PetscMemcpy(A,B,sizeof(Scalar)*0); 44*7fb9f68cSSatish 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); 49*7fb9f68cSSatish 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