Speed up factor

Question

Pipeline system has 4 stages and each stage takes 10ns.

30% instructions are branch instructions .each branch instruction introduces delay of 3 cycle. What is speed up factor compare to same non pipelines, If there are 1000 instructions.

Comments

i got an answer, which is 2.57. Do you have final answer with you? if 2.57 is the final answer, ping me i will explain

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3.65?

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Alina Whats the answer?Post the answer here

Answer 1

In Pipelined, No. of cycle is = 4 + 999 + 300*3 = 1903 cycles

so time taken in pipelined processor = 1903 * 10ns

In Non-pipelined processor, time taken = 1000*4*10ns

so speedup = Non-pipelined / Pipelined = 2.1

Answer 2

Please explain in detail