Computers and Technology, 11.10.2020 01:01, marelinatalia2000

4.22 [5]<§4.3> You are going to enhance a computer, and thereare two possible improvements:either make multiply instructions run four times faster

than before, or make memory access instructions run two times fasterthan

before. Yourepeatedly run a program that takes 100 seconds to execute. Ofthis

time, 20% isused for multiplication, 50% for memory access instructions, and

30% for othertasks. What will the speedup be if you improve onlymultiplication?

What will thespeedup be if you improve only memory access? What will

the speedup beif both improvements are made?

4.23

[5]<§4.3> You are going to change the program described inExercise so

that thepercentages are not 20%, 50%, and 30% anymore. Assuming thatnone

of the newpercentages is 0, what sort of program would result in a tie(with

regard tospeedup) between the two individual improvements? Provide botha

formula and someexamples.

Answers: 3

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4.22 [5]<§4.3> You are going to enhance a computer, and thereare two possible improvements:ei...