4 (15 pts) Suppose that when a certain processor is running an intense mathematical benchmark, 60% of the instructions are floating-point instructions (20% compute a square root, and 40% are other floating-point computations). Refer to the table for the CPIs for different types of instructions. Percentage (Freqi) 40% ; 2 Instruction distribution non-floating-point instructions square root floating- point instructions other floating-point instructions 20% 10 5 40% a) What is the overall average CPI when the processor is running the benchmark? b) What is the average CPI for all floating-point instructions (including the square root and other floating- point instructions)? c) Suppose you have a choice between speeding up all floating-point instructions by a factor of 3 versus speeding up the floating-point square root instruction by a factor of 100. What is the overall speedup resulting from each possible choice? Assuming that the two choices require equal effort, which is the better choice? 4 (15 pts) Suppose that when a certain processor is running an intense mathematical benchmark, 60% of the instructions are floating-point instructions (20% compute a square root, and 40% are other floating-point computations). Refer to the table for the CPIs for different types of instructions. Percentage (Freqi) 40% ; 2 Instruction distribution non-floating-point instructions square root floating- point instructions other floating-point instructions 20% 10 5 40% a) What is the overall average CPI when the processor is running the benchmark? b) What is the average CPI for all floating-point instructions (including the square root and other floating- point instructions)? c) Suppose you have a choice between speeding up all floating-point instructions by a factor of 3 versus speeding up the floating-point square root instruction by a factor of 100. What is the overall speedup resulting from each possible choice? Assuming that the two choices require equal effort, which is the better choice