Parallel add version 2:

This program spawns multiple processses which work on an array of variable size and number of processes varying from 1 to 3. A table provides information on summation results and speed up obtained. To calculate the speedup we need the time taken for a pure sequential run of the slave process. This program achieves the addition of the array using the sequential add without using parallel computing primitives as we will see in a later example (Timing the barrier calls).

File names: plladd2.c      /*source code */
            plladd2        /* executable */
            plladd2op      /* output example file */