GATE 2021 CS – Question 63
A five-stage pipeline has stage delays of 150, 120, 150, 160 and 140 nanoseconds. The registers that are used between the pipeline stages have a delay of 5 nanoseconds each. The total time to execute 100 independent instructions on this pipeline, assuming there are no pipeline stalls, is ______ nanoseconds.
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Correct answer: 17160
Explanation
Clock period = 160 + 5 = 165 ns. Time = (k + n - 1) x period = (5 + 99) x 165 = 104 x 165 = 17160 ns.