UPPCL AE 2018:50

Question

Assume that we test the performance of two processors, $\text{P}_{1}$ and $\text{P}_{2},$ on a program. We find the following about each:

Processor $\text{P}_{1}$ has a $\text{CPI}$ of $2$ and executes $2$ billion instructions per second. Processor $\text{P}_{2}$ has a $\text{CPI}$ of $1$ and executes $8$ billion instructions per second. Which processor has higher performance on this program?

(Recall that $\text{CPI}$ stands for Cycles Per instruction.)

• A. Processor $\text{B}$
• B. Not enough information to tell
• C. Processor $\text{A}$
• D. They have equal performance