How to speed up this problem by MPI

Question

(1). I am wondering how I can speed up the time-consuming computation in the loop of my code below using MPI?

 int main(int argc, char ** argv)   
 {   
 //          


        

Answer 1

If all the values in the array are independent, then it should be trivially parallelizable. Split the array into chunks of roughly equal size, give each chunk to a node, and then compile the results back together.