csse232_hw1_soln - Fall 2009-2010 CSSE 232 CSSE 232...

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Fall 2009-2010 CSSE 232 CSSE 232 – Computer Architecture I Rose-Hulman Institute of Technology Computer Science and Software Engineering Department Homework 1 Solutions 1. (55 points) (a) (10 points) M base Class CPI Freq A 2 0.40 0.80 B 3 0.25 0.75 C 3 0.25 0.75 D 5 0.10 0.50 2.80 CPI for this mix @ 500Mhz = 2.80 M opt Class CPI Freq A 2 0.40 0.80 B 2 0.25 0.50 C 3 0.25 0.75 D 4 0.10 0.40 2.45 CPI for this mix @ 600Mhz = 2.45 (b) (5 points) M base : 500Mhz/2.80 = 179 MIPS M opt : 600Mhz/2.45 = 245 MIPS (c) (10 points) M opt is 245/179 = 1.37 times faster than M base (d) (5 points) M comp Class CPI Freq. Reduction Adj. Freq. A 2 0.40 0.90 0.360 0.72 B 3 0.25 0.90 0.230 0.68 C 3 0.25 0.85 0.210 0.64 D 5 0.10 0.95 0.095 0.48 0.890 2.51 20 October 2009 Page 1
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Fall 2009-2010 CSSE 232 2.51/0.89 = 2.81 CPI (e) (5 points) M comp is 2.8/(2.81 x 0.89) = 1.12 times faster than M base (f) (10 points) M both Class CPI Freq. Reduction Adj. Freq. A
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csse232_hw1_soln - Fall 2009-2010 CSSE 232 CSSE 232...

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