Question

Given a processor that runs at 1GHz with the following: Instruction-------------- Frequency --------------Cycles Load & store ----------------25% --------------------10 arithmetic instructions----...

Given a processor that runs at 1GHz with the following:

Instruction-------------- Frequency --------------Cycles

Load & store ----------------25% --------------------10

arithmetic instructions------ 65% --------------------6

branch instructions -----------10%-------------------- 4

1) Calculate the CPI for the above.

2) Suppose the amount of registers are doubled, such that clock cycle time increases by 40%. What is the new clock speed (in GHz)?

3) Assume only the load & stores instructions are speed up by 5 times and their frequency is increased to 50% (Arithmetic instructions drop to 40%), what is the overall speedup of the processor?

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Titt Arlich- 万 6 alt 之00318C112

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