homework2

homework2 - (3) Exercise 1.15 Please work out all parts...

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CDA 4205 Computer Architecture Fall 2010 Homework – 2 Due October 05, 2010 (in class before lecture begins) You are expected to work on all homework problems individually and independently. If some needed data is missing you are expected to make an assumption regarding the missing data. State all assumptions and show all work. Please refer to your textbook by Patterson and Hennessy Fourth Edition. Please do not seek help on homework. (1) Exercise 1.4 Please work out all parts 1.4.1 to 1.4.6 (From Textbook) (2) Exercise 1.6 Please work out all parts 1.6.1 to 1.6.6 (From Textbook)
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Unformatted text preview: (3) Exercise 1.15 Please work out all parts 1.15.1 to 1.15.6 (From Textbook) (4) Assume that an architect is thinking about adding a vector functional unit. When an instruction stream is executed using this FU, it runs 16 times faster than when the same instruction stream is executed in scalar mode. For the purpose of this question, the percentage of vectorization is defined to be the percentage of time that could be spent using vector mode in a given program. What percentage of vectorization is needed to achieve a speedup of 3? ( Hint: use Amdahls Law )...
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