Question

1. Calculate the sum of a randomly populated array sequentially in add_serial( )

2. Use OpenMP calculate the sum of the same array in add_parallel( )

a. Use a tree sum by dividing the array in some fashion among the threads.

Main( ) will output the resulting calculation times.

Answer 1

#include < stdio.h >
#include < omp.h >

int add_serial( int arr[], int n)

{

    int sum = 0;

    for (int i = 0; i < n; i++)

    sum += arr[i];

  

    return sum;

}

  

int main()

{

    int arr[] = {12, 3, 4, 15};

    int n = sizeof(arr) / sizeof(arr[0]);

    printf("Sum of given array is %d", add_serial(arr, n));

    return 0;

}