Assume a non-pipelined processor takes 100 ns to process an instruction. The same instruction can be executed in a 5-stage pipelined processor, where each stage takes 20 ns. a) What is the minimum number of instructions for which the speedup achieved by the pipelined processor compared to the non-pipelined processor is at least 3? b) The instruction takes the same time (100 ns) to execute whether on the pipelined processor or on the non-pipelined processor. So why do we say pipelining speeds up execution?
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In this case, each stage takes 20 ns, so a new instruction is completed every 20 ns. In the non-pipelined processor, each instruction takes 100 ns. Show more…
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