midterm1.w10

midterm1.w10 - Very Short Answer(1(2 If you are mainly...

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Very Short Answer: (1) (2) If you are mainly worried about program size, what type of instruction set would you use? What if performance was your primary concern? (2) (1) Do benchmarks remain valid indefinitely? (3) (2) Issuing multiple instructions per cycle puts tremendous pressure on what twoparts of the machine? (4) (2) In class we mentioned VLIW and Superscalar as twoways to circumvent the Flynn Limit of 1. We also talked about twoother approaches - what were they? (5) (1) Peak performance does or does not track observed performance. (6) (2) Decoupled architectures split a program into twostreams. What are they? (7) (3) Write down the 3-term CPU performance equation developed in class. (8) (2) What is Amdahl’slaw (in words)? -1-
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Short Answers: (10) (3) Whyare there multiple dies per silicon wafer? Whynot just fabricate one huge die per wafer? (11) (4) What is the primary difference between Scoreboarding and Tomasulo’salgorithm? (12) (6)What is a predicated instruction? What are the advantages to using predicated instructions?
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midterm1.w10 - Very Short Answer(1(2 If you are mainly...

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