In a 4-stage pipeline (Fetch, Decode, Execute, Write-back), if each stage…
2026
In a 4-stage pipeline (Fetch, Decode, Execute, Write-back), if each stage takes 10 ns, what is the throughput after the pipeline is full (instructions per second) ?
- A.
25 million
- B.
50 million
- C.
100 million
- D.
200 million
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Correct answer: C
In a 4-stage pipeline, once full, one instruction completes every clock cycle. The clock period equals the longest stage time (10 ns). Throughput = 1 / 10ns = 10^8 instructions per second (100 million).