Assume we have a cluster consisting of 4 identical computer nodes. Now, let’s say the program has been parallelized or partitioned for parallel execution on such a cluster. 25% of the program code...

Assume we have a cluster consisting of 4 identical computer nodes. Now, let’s say the program has been parallelized or partitioned for parallel execution on such a cluster. 25% of the program code must be executed sequentially, while the remaining 75% can be run parallel on the available nodes. Using Amdahl’s law, calculate the speed up if the cluster is upgraded to have 16 nodes compared to 4 nodes.