1. consider the following processors: P2 Processor Clock rate P1 3 GHz 2.5 3.5 GHz 4 P3 4 GHz 3 a) If the same ISA is used for the three machines. Which machine is faster? Why? b) What is the MIPS for each machine? c) It is desired to run a program in 5 seconds on each machine by using suitable ISA for each case. How many instructions are needed for each processor? P2 2. The following are three different implementations of the same ISA where the instruction set are divided into 3 classes: A, B and C Processor Clock rate CPI of class A CPI of class B CPI of class C P1 3 GHz 2 4 3 2.5 GHz 3 5 3 P3 4 GHz 3 3 2 A program with 5.0E4 instructions is divided into the classes as follows: 40% class A, 35% class B and 25% class C. a) What is the average CPI for each machine? b) Which machine is faster