Problem #2 (Amdahl's Law) (a) What does Amdahl's Law tell us about the performance optimization? Describe different applications of Amdahl's law. (b) A processor chip is used for applications in which 20% of the execution time is spent on multiplication and 80% on addition. The design team wants the new model of processor chip to have a 2.5 speedup. Find the enhancement (speedup) in the adder in the new model to achieve system speedup of 2.5