Question

suppose you wish to run a program p with 3.25 x 109 instructions on a 3 ghz machine with a cpi of 1.8. what is the expected cpu time? round your answer to 3 decimal places.

Answer 1

The expected CPU time to run a program with 3.25 x 10^9 instructions on a 3 GHz machine with a CPI of 1.8 is calculated to be approximately 1.95 seconds.

Step-by-step explanation:

To calculate the expected CPU time for running a program with 3.25 x 109 instructions on a 3 GHz machine with a CPI (Cycles Per Instruction) of 1.8, we can use the following formula:

CPU time = (Instruction count x CPI) / Clock rate

Plugging in the values we get:

CPU time = (3.25 x 109 instructions x 1.8 cycles/instruction) / (3 x 109 Hz)

Now, doing the math:

CPU time = (5.85 x 109 cycles) / (3 x 109 Hz)

CPU time = 1.95 seconds

Therefore, the expected CPU time to run the program is 1.95 seconds.