Repeat the preceding problem using machine D as the reference machine. How does this affect the relative rankings of the four systems?

Data from preceding problem

Assume that a benchmark program executes in 480  seconds on a reference machine  A.  The same program executes on systems B, C, and D in 360, 540, and 210 seconds, respectively.

a. Show the speedup of each of the three systems under test relative to A.

b. Now show the relative speedup of the three systems. Comment on the three ways of comparing machines (execution time, speedup, relative speedup).