2.1) Consider two different processors, P1 and P2, which implement the same instruction set architecture. The instructions can be divided into four classes according to their CPI: classes A, B, C, and D. P1 has a clock rate (f1) of 3.3GHz and CPIs of 1,2,2, and 2 (associated to the given order of classes) and P2 has a clock rate (f2) of 2.7GHz and CPIs of 4,2,1, and 1 , respectively. We are given a program X, which has a dynamic instruction count (IC) of 1.5 million. The instruction distribution is as follows: 12.5% class A, 10% class B, 70% class C, and 7.5% class D. 1.a) What is the effective CPI for program X on P1 and P2 ? 1.b) What is the CPU time when executing program X on P1 and P2 ? Which processor is the fastest? 1.c) What is the total number of elapsed clock cycles when executing program X on P1 and P2 ? 1.d) Defining performance as number of instructions per second, compute the performance for P1 and P2. 1.e) We are trying to reduce the CPU time by 25%, but this leads to an increase of 20% on the CPI. What clock rate should we have for each processor