What is the cpu time, What's the CPU time? What's the

What is the cpu time

Assignment Help Computer Engineering

Reference no: EM132218371

Answer the following Question :

a. What's the CPU time?

b. What's the global CPI?

c. Give two options for improving the CPU performance by 25%.

Clock Rate: 2.0GHZ

Class A: 20%, CPI 2

Class B: 30%, CPI 1

Class C: 10%, CPI 3

Class D: 20%, CPI 4

Class E: 20%, CPI 5

a. What's the CPU time?

1.4 milliseconds (10^-3)

= (0.2* 10 ⁶ *2)+(0.3* 10 ⁶ *1) +(0.1*10 ⁶ * 3)+(0.2*10 ⁶ *4)+(0.2*10 ⁶ *5)

2.0 *10⁹

Factor out and simplify

(0.4+0.3+0.3+0.8+1.0)*10⁶= 2.8* 10⁶ = 1.4 *10^-3

2.0*10⁹ 2.0*10⁹

b. What's the global CPI?

=(CPU time*clock rate)/I

= 2.8*10⁶ x 2.0* 10⁹ x 1

2.0*10⁹ 1 10⁶

= 2.8

Reference no: EM132218371

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