Parallelize for-loop by MPI?
I am wondering how I can speed up the time-consuming computation in the loop of my code below using MPI?
Code:
int main(int argc, char ** argv)
{
// some operations
f(size);
// some operations
return 0;
}
void f(int size)
{
// some operations
int i;
double * array = new double [size];
for (i = 0; i < size; i++) // how can I use MPI to speed up this loop to compute all elements in the array?
{
array[i] = complicated_computation(); // time comsuming computation. Elements are computed independently of each other.
}
// some operations using all elements in array
delete [] array;
}
As shown in the code, I want to do some operations before and after the part to be paralleled with MPI, but I don't know how to specify where the parallel part begins and ends.
