1 #include "stdio.h" 2 #include "petsc.h" 3 4 int main( int argc, char **argv) 5 { 6 double x, y,z; 7 int A[10000], B[10000],i; 8 9 PetscInitialize(&argc, &argv,0,0,0); 10 11 for (i=0; i<10000; i++) { 12 A[i] = i%61897; 13 B[i] = i%61897; 14 } 15 /* To take care of paging effects */ 16 PetscMemcmp(A,B,sizeof(int)*10000); 17 x = PetscGetTime(); 18 19 x = PetscGetTime(); 20 PetscMemcmp(A,B,sizeof(int)*10000); 21 PetscMemcmp(A,B,sizeof(int)*10000); 22 PetscMemcmp(A,B,sizeof(int)*10000); 23 PetscMemcmp(A,B,sizeof(int)*10000); 24 PetscMemcmp(A,B,sizeof(int)*10000); 25 PetscMemcmp(A,B,sizeof(int)*10000); 26 PetscMemcmp(A,B,sizeof(int)*10000); 27 PetscMemcmp(A,B,sizeof(int)*10000); 28 PetscMemcmp(A,B,sizeof(int)*10000); 29 PetscMemcmp(A,B,sizeof(int)*10000); 30 y = PetscGetTime(); 31 PetscMemcmp(A,B,sizeof(int)*0); 32 PetscMemcmp(A,B,sizeof(int)*0); 33 PetscMemcmp(A,B,sizeof(int)*0); 34 PetscMemcmp(A,B,sizeof(int)*0); 35 PetscMemcmp(A,B,sizeof(int)*0); 36 PetscMemcmp(A,B,sizeof(int)*0); 37 PetscMemcmp(A,B,sizeof(int)*0); 38 PetscMemcmp(A,B,sizeof(int)*0); 39 PetscMemcmp(A,B,sizeof(int)*0); 40 PetscMemcmp(A,B,sizeof(int)*0); 41 z = PetscGetTime(); 42 43 fprintf(stderr,"%s : \n","PetscMemcmp"); 44 fprintf(stderr," %-11s : %e sec\n","Latency",(z-y)/10.0); 45 fprintf(stderr," %-11s : %e sec\n","Per byte",(2*y-x-z)/100000.0); 46 47 PetscFinalize(); 48 return 0; 49 } 50