1. Two different compilers, A and B, compile the same program, for execution on the same computer. Compiler A generates an instruction count of 1.1e9 and compiler B generates an instruction count of 1.3e9. The execution times for the compiled programs are 1.4s, and 1.9s, respectively.

a) What is the average CPI for each program, given that the processor has a clock cycle time of 0.5 ns?

b) If a third compiler is developed that uses only 7.0e8 instructions and has an average CPI of 1.2, what is the relative performance of this compiler, compared to A and to B?

2. Wafer A has an 18cm diameter, a cost of 100, contains 72 dies, and has 0.015 defects/cm2 . Wafer B has a 15cm diameter, a cost of 75, contains 90 dies, and has 0.01 defects/cm2 .

a) Determine the yield for each wafer.

b) Determine the cost per die for each wafer.

c) If the number of dies increases 10%, and the defect rate increases by 10%, what will the new die area and yield be for each wafer?