xercise $1\mathrm{.}4$

$1\mathrm{.}4\mathrm{.}1$ to $1\mathrm{.}4\mathrm{.}3$

Consider two different implementations of the same instruction set architecture. The

instructions can be divided into four classes according to their CPI $($class A$,$ B$,$ C$,$ and D$).$

Clock Rate CPI Class A CPI Class B CPI Class C CPI Class D

P$11\mathrm{.}5$ GHz $1234$

P$22$ GHz $2222$

$1\mathrm{.}4\mathrm{.}1$ Given a program with $10^6$ instructions divided into classes as follows: $10\%$ Class

A$,20\%$ Class B$,50\%$ Class C$,20\%$ Class D$,$ which implementation is faster: P$1$ or P$2?$

$1\mathrm{.}4\mathrm{.}2$ What is the global CPI for each implementation?

$1\mathrm{.}4\mathrm{.}3$ Find the clock cycles required in both cases