Complete the program 'Bcast-Reduce-Assignment.c' (Refer to 'Bcast-Reduce-Example.c') to make the program have the output as follows if we run the program using 2 processes. The input sequence is: 0 1 2 3 The output sequence is: 0 2 6 12 #include #include #include int main(void) { int my_rank, comm_sz; int i; int Count = 4; int Number[4]; int Result[4]; MPI_Init(NULL, NULL); MPI_Comm_size(MPI_COMM_WORLD, &comm_sz); MPI_Comm_rank(MPI_COMM_WORLD, &my_rank); if(my_rank == 0) { printf("The input sequence is: \n"); for (i = 0; i < Count; i++) { Number[i] = i; printf("%d ", Number[i]); } printf("\n"); } // Process 0 sends data to all of the processes MPI_Bcast(Number, Count, MPI_INT, 0, MPI_COMM_WORLD); for (i = 0; i < Count; i++) Number[i] += my_rank; MPI_Reduce( , Result, , MPI_INT, MPI_PROD, 0, MPI_COMM_WORLD); // Print out the result if (my_rank == 0) { printf("The output sequence is: \n"); printf("\n"); } MPI_Finalize(); return 0; }
Complete the program 'Bcast-Reduce-Assignment.c' (Refer to 'Bcast-Reduce-Example.c') to make the program have the output as follows if we run the program using 2 processes.
The input sequence is:
0 1 2 3
The output sequence is:
0 2 6 12
#include <stdio.h>
#include <stdlib.h>
#include <mpi.h>
int main(void)
{
int my_rank, comm_sz;
int i;
int Count = 4;
int Number[4];
int Result[4];
MPI_Init(NULL, NULL);
MPI_Comm_size(MPI_COMM_WORLD, &comm_sz);
MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
if(my_rank == 0)
{
printf("The input sequence is: \n");
for (i = 0; i < Count; i++)
{
Number[i] = i;
printf("%d ", Number[i]);
}
printf("\n");
}
// Process 0 sends data to all of the processes
MPI_Bcast(Number, Count, MPI_INT, 0, MPI_COMM_WORLD);
for (i = 0; i < Count; i++)
Number[i] += my_rank;
MPI_Reduce( , Result, , MPI_INT, MPI_PROD, 0, MPI_COMM_WORLD);
// Print out the result
if (my_rank == 0)
{
printf("The output sequence is: \n");
printf("\n");
}
MPI_Finalize();
return 0;
}
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