What opportunities for parallelism do you see? What problems or challenges do you see limiting performance? How could the problems be overcome? Measure the time it takes to execute different parts of the serial program. If a part of a program has a very short execution time, how can you still measure the time relatively accurately?

The Code:

#include #include 5 #include 6 #include 7 8 #define SIZE 10000000 9 10 volatile float a[SIZE]; 11 volatile float b[SIZE]; 12 13 int main(int argc, char **argv) 14 B{ 15 long int i; 16 double sum; 17 struct timeval time1, time2; 18 19 srand(time()); 20 21 for (i = 0; i