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Performance of the memory access instructions

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A computer manufacturer has decided to enhance their microprocessor. There are two possible improvements: make multiply instruction runs 4 times faster than before, or make memory access instructions run 2 times faster than before. A benchmark program P is repeatedly running on this microprocessor for 100 seconds. During this period, the program P performs multiplication for 20% of the time; and, it makes memory accesses for 50% of the time. The remaining time is used for performing other tasks such as integer operations, branching etc. What will the speedup be if only the performance of the multiplication instruction is improved? What will the speedup be if only the performance of the memory access instructions is improved? What will the speedup be if both improvements are made?

Reference no: EM131819541

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