Question: Assume to execute arithmetic, load/store, and branch instructions, in a processor which has CPIs of 1, 12, and 5, respectively. Also assume that the program

Assume to execute arithmetic, load/store, and branch instructions, in a processor which has CPIs of 1, 12, and 5, respectively. Also assume that the program requires to execution 2.5E9 arithmetic instructions, 1.5E9 load/store instructions, and 0.5E9 branch instructions in that processor. The CPU frequency is 2.5GHz.

(a) Find out the overall CPI for that program.

(b) What is the CPU time of that program?

(c) If you want to replace the processor with a 5-GHz processor, what will be the new execution time. Assume processor speed is affects 40% of execution time.

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