You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.0 KiB
52 lines
1.0 KiB
5 years ago
|
#include <stdio.h>
|
||
|
|
#include "mpi.h"
|
||
|
|
|
||
|
|
main(int argc, char** argv)
|
||
|
|
{
|
||
|
|
int my_rank;
|
||
|
|
int p, k;
|
||
|
|
int root;
|
||
|
|
int a1_local;
|
||
|
|
int a2_local;
|
||
|
|
int local_num;
|
||
|
|
int endnum;
|
||
|
|
int local_res;
|
||
|
|
int final_res;
|
||
|
|
int namelen;
|
||
|
|
char proc_name[MPI_MAX_PROCESSOR_NAME];
|
||
|
|
|
||
|
|
MPI_Init(&argc, &argv);
|
||
|
|
MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
|
||
|
|
MPI_Comm_size(MPI_COMM_WORLD, &p);
|
||
|
|
MPI_Get_processor_name(proc_name, &namelen);
|
||
|
|
|
||
|
|
if (my_rank == 0)
|
||
|
|
{
|
||
|
|
printf("Dose plithos arithmvn:\n");
|
||
|
|
scanf("%d", &endnum);
|
||
|
|
}
|
||
|
|
|
||
|
|
root = 0;
|
||
|
|
MPI_Bcast(&endnum, 1, MPI_INT, root, MPI_COMM_WORLD);
|
||
|
|
|
||
|
|
local_res = 0;
|
||
|
|
local_num = endnum/p;
|
||
|
|
a1_local = (my_rank * local_num) + 1;
|
||
|
|
a2_local = a1_local + local_num - 1;
|
||
|
|
for (k=a1_local; k<=a2_local; k++)
|
||
|
|
local_res = local_res + (k*k);
|
||
|
|
printf("\n Process %d on %s : local result = %d \n", my_rank, proc_name, local_res);
|
||
|
|
|
||
|
|
root = 0;
|
||
|
|
MPI_Reduce(&local_res, &final_res, 1, MPI_INT, MPI_SUM, root, MPI_COMM_WORLD);
|
||
|
|
|
||
|
|
if (my_rank == 0)
|
||
|
|
{
|
||
|
|
printf("\n Total result for N = %d is equal to : %d \n", endnum, final_res);
|
||
|
|
}
|
||
|
|
|
||
|
|
MPI_Finalize();
|
||
|
|
}
|
||
|
|
|
||
|
|
|