Please use the code below to help me answer this problem. We need to insert missing items to make the code execute

Complete the program 'Scatter-Reduce.c' (Code is below) to compute the product of all elements in a given array.

#include #include #include #include

int *Random_Num_Generator(int Num_Elements);

int Compute_Product(int *array, int num_elements);

int main(int argc, char* argv[]) { int comm_sz, my_rank; int i, Result; int Num_Per_Proc = atoi(argv[1]);

// Seed the random number generator to get different results each time srand(time(NULL)); MPI_Init(&argc, &argv);

MPI_Comm_rank(MPI_COMM_WORLD, &my_rank); MPI_Comm_size(MPI_COMM_WORLD, &comm_sz);

// Generate a random array of elements on process 0 int *Random_Nums = NULL;

if (my_rank == 0) { Random_Nums = Random_Num_Generator(Num_Per_Proc * comm_sz);

printf("The random numbers generated: ");

for (i = 0; i < Num_Per_Proc * comm_sz; i++)

printf("%d; ", Random_Nums[i]);

printf(" "); }

// Generate a buffer for holding a subset of the entire array int *Sub_Random_Nums = (int *)malloc(sizeof(int) * Num_Per_Proc); // Scatter the random integer numbers from process 0 to all processes MPI_Scatter(Random_Nums, Num_Per_Proc, MPI_INT, Sub_Random_Nums, Num_Per_Proc, MPI_INT, 0, MPI_COMM_WORLD); // Compute the product value of a subset array on each process int Sub_Product = Compute_Product(Sub_Random_Nums, Num_Per_Proc);

// Reduce the total product value of all elements to process 0 MPI_Reduce(&Sub_Product, , 1, MPI_INT, , 0, MPI_COMM_WORLD);

if (my_rank == 0) printf("Total product of all elements is %d ", Result);

// Clean up if (my_rank == 0) free(Random_Nums); free(Sub_Random_Nums); MPI_Finalize(); return 0;

}

// Create an array of random integer numbers ranging from 1 to 10 int *Random_Num_Generator(int Num_Elements) { int *Rand_Nums = (int *)malloc(sizeof(int) * Num_Elements); int i;

for (i = 0; i < Num_Elements; i++) Rand_Nums[i] = (rand() % 10) + 1;

return Rand_Nums; }

// Computes the product of an array of numbers int Compute_Product(int *array, int num_elements) { int product = 1; int i; for (i = 0; i < num_elements; i++) product *= array[i]; return product; }

Please note, below is an example we had

#include #include #include #include

int *Random_Num_Generator(int Num_Elements);

int Compute_Product(int *array, int num_elements);

int main(int argc, char* argv[]) { int comm_sz, my_rank; int i; int Num_Per_Proc = atoi(argv[1]);

// Seed the random number generator to get different results each time srand(time(NULL)); MPI_Init(&argc, &argv);

MPI_Comm_rank(MPI_COMM_WORLD, &my_rank); MPI_Comm_size(MPI_COMM_WORLD, &comm_sz);

// Generate a random array of elements on process 0 int *Random_Nums = NULL;

if (my_rank == 0) { Random_Nums = Random_Num_Generator(Num_Per_Proc * comm_sz);

printf("The random numbers generated: ");

for (i = 0; i < Num_Per_Proc * comm_sz; i++) printf("%d ", Random_Nums[i]);

printf(" "); }

// Generate a buffer for holding a subset of the entire array int *Sub_Random_Nums = (int *)malloc(sizeof(int) * Num_Per_Proc); // Scatter the random integer numbers from process 0 to all processes MPI_Scatter(Random_Nums, Num_Per_Proc, MPI_INT, Sub_Random_Nums, Num_Per_Proc, MPI_INT, 0, MPI_COMM_WORLD); // Compute the product value of a subset array on each process int Sub_Product = Compute_Product(Sub_Random_Nums, Num_Per_Proc);

// Gather all partial product values to process 0 int *Partial_Results = NULL;

if (my_rank == 0)

Partial_Results = (int *)malloc(sizeof(int) * comm_sz); MPI_Gather(&Sub_Product, 1, MPI_INT, Partial_Results, 1, MPI_INT, 0, MPI_COMM_WORLD); // Compute the total product value of all numbers on process 0 if (my_rank == 0) { int Result = Compute_Product(Partial_Results, comm_sz);

printf("Total product of all elements is %d ", Result); } // Clean up if (my_rank == 0) { free(Random_Nums); free(Partial_Results); }

free(Sub_Random_Nums); MPI_Finalize();

return 0; }

// Create an array of random integer numbers ranging from 1 to 10 int *Random_Num_Generator(int Num_Elements) { int *Rand_Nums = (int *)malloc(sizeof(int) * Num_Elements); int i;

for (i = 0; i < Num_Elements; i++) Rand_Nums[i] = (rand() % 10) + 1;

return Rand_Nums; }

// Computes the product of an array of numbers int Compute_Product(int *array, int num_elements) { int product = 1; int i; for (i = 0; i < num_elements; i++) product *= array[i]; return product; }