3-Assume a program requires the execution of 50 x 106 FP instructions, 110 x 106 INT instructions, 80 x 106 L/S instructions, and 16 × 106 branch instructions. The CPI for each type of instruction is...

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Extracted text: 3-Assume a program requires the execution of 50 x 106 FP instructions, 110 x 106 INT instructions, 80 x 106 L/S instructions, and 16 × 106 branch instructions. The CPI for each type of instruction is 4, 2, 3, and 4, respectively. Assume that the processor has a 4 GHz clock rate. a. By how much must we improve the CPI of FP instructions if we want the pro- gram to run three times faster? b. By how much must we improve the CPI of L/S instructions if we want the pro- gram to run three times faster? c. By how much is the execution time of the program improved if the CPI of INT and FP instructions is reduced by 40% and the CPI of L/S and Branch is re- duced by 45%?