Instructions:

a$)$ You need to show your work.

b$)$ If you assume something, you need to state that

Problem $4$: Performance Evaluation CPI

A pipeline with $5$ stages runs a program. Assume $30\%$ of instructions are branches, and $$branch not

taken$$ holds for branch prediction. Further assume that $20$ percent of the branches are predicted

correctly, and there is an average penalty of $2$ cycles for each mispredicted branch. Additionally, $10$

percent of the total instructions incur an average of $1\mathrm{.}5$ stalls each.

What would be the CPI of running program P on this pipeline?