We are trying to reduce the current time of 15s by 30% but this leads to an increase of 18% in the CPI. For each processor, what clock rate should we have to achieve this time reduction?
1 answer:
Answer:
Explanation:
For reduction
Execution time = (instructions * CPI)/(Clock rate)
Since CPI is increased by 18%
18/100 +1 = 1.18
Therefore
P1 CPI = CPI x 1.18
P2 CPI = CPIx 1.18
P3 CPI = CPI x 1.18
Since clockrate reduces by 30% we have it to be a 0.7
P1: (Instructions x P1CPI) / 0.7
P2: (Instructionsx P2CPI) / 0.7
P3: (Instructions x P2CPI) /0 .7
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