Q$\mathrm{.}2.$ Architecture performance

$[15$ marks$]$

A program consists of $10$ million instructions that require either $3,5,$ or $6$ machine cycles for

their execution on a certain microprocessor. Of these instructions,

$(40+f)\%$ require $3$ machine cycles,

$(30+g-f)\%$ require $5$ machine cycles, and

$(30-g)\%$ require $6$ machine cycles.

a$)$ What is the average number of machine cycles per instruction for this program?

Answer

b$)$ If the above program is the only one that this microprocessor executes, what is the required

clock rate for this microprocessor to be a $"1500$ MIPS" processor?

Answer

c$)$ If $40\%$ of the instructions of the above program require memory access that needs an

average of $10$ additional machine cycles, what is the average number of machine cycles per

instruction, including these memory related instructions?

Answer