COMPUTER ARCHITECTURE**** COMPUTER ARCHITECTURE*** COMPUTER ARCHITECTURE

1.Compare the following computer speeds using Arithmetic and Geometric Mean measures. (Normalize the values based on Computer A).

	Computer A	Computer B	Computer C
Program 1	1 ms	100 ms	50 ms
Program 2	1000 ms	50 ms	40 ms
Program 3	500 ms	200 ms	400 ms
Program 4	100 ms	800 ms	600 ms

2.CPU clock rate is 400 MHz

Program takes 30 million cycles to execute

Whats the CPU time?

3.Let assume that a benchmark has 100 instructions:

21 instructions are loads/stores (each take 3 cycles)

20 instructions are adds (each takes 2 cycle)

15 instructions are square root (each takes 20 cycles)

What is the CPI for this benchmark?