A program consists of a large number of instructions with the following mix: · 4

Question

A program consists of a large number of instructions with the following mix: · 40% ALU - 1096 store · 20% load (of which 5096 have values used in the next instruction) +2096 branch (determined in thei D stage, taken 40% of the time and no prediction is done) · 10% jump (determined in the ID stage) For the pipelined CPU, what is the formula to determine the actual CPI based on these numbers? O A 4096(1)+ 10%(1)+ 206(1) 209%(2)+1096(2) O B. 4096( 1 ) + 10%(1) + 20%(50%)( 1 ) + 20%(50%)(2) + 20%(60%)(2) +20%(40%)( 1 ) + 1 096(2) o c. 4096 (1) + 1 096(1) + 2096(50%)(2) +20%(40%)(2) + 1096(2) D. 40%(1) + 1096(1) + 20%(50%)( 1 ) + 20%(50%)(2) + 20%(40%)(2) + 20%(60%)(1) + 10%(2)

Explanation / Answer

CPI is given as 40%(1) + 10%(1) + 20%(2) + 20%(2) + 10%(2)

therefore, option a is correct,

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