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There are two processor M1 and M2. M1 uses

by Pritam on 10 Dec 2015

There are two processor M1 and M2. M1 uses four pipeline stages with the delay of respectively stage as 6 ns, 4 ns, 7 ns, 5 ns. M2 has got 7 pipeline stages with the delay of cache stage 4 ns. Then pick the correct option for executing 200 instructions on M1 and M2.

(A) M2 is faster by 600 ns
(B) M2 is faster by 595 ns
(C) M2 is faster by 610 ns
(D) M2 is faster by 513 ns

M2 is faster by 595 ns
(6 + 9 + 7 + 6) + 200 × 7 - (28 + 800) = 595 ns

2Comments
nikch's picture

Aren't you considering 201 instructions here??

It should have been (28 + 199*7) - (28+(199*4)) = 597

parimal_andhalkar's picture

M2 is faster by 597ns

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