Suppose we have the following measurements: Frequency of FP operations = 15% Average CPI of FP opera

Suppose we have the following measurements:

Frequency of FP operations = 15%

Average CPI of FP operations = 8.0

Average CPI of other instructions = 1.6

Frequency of (FP divide) DIV.D = 3%

CPI of DIV.D = 25

Compare two design alternatives.

Decrease CPI of DIV.D to 20 for a cost of $X, or

Decrease average CPI of all FP operations to 7.0 for a cost of $2X.

Compare these alternatives using the processor performance equation.

(a) What is the speedup of the two alternatives?

(b) Say just a few words about which is the most cost effective option and why for the situation given in this problem and for a computer design that will run a wide range of end user FP applications. Would further experimentation be helpful?