Compilers can have a profound impact on the performance of an application. assume that for a program, compiler a results in a dynamic
instruction count of 1.0e9 and has an execution time of 1.1 s, while compiler b results in a dynamic instruction count of 1.2e9 and an execution time of 1.5 s.

a. find the average cpi for each program given that the processor has a clock cycle
time of 1 ns.

b. assume the compiled programs run on two different processors. if the execution
times on the two processors are the same, how much faster is the clock of the
processor running compiler a’s code versus the clock of the processor running
compiler b’s code?

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?