試題詳解

1. Consider a computer running a program with CPU times shown in the following table:

(A) If the time for FP instructions is reduced by 40%, the total execution time of the program reduced in percentage is 20%.
(B) If the time for L/S instructions is reduced by 80%, the speedup of the program is 1.25.
(C) If the speed of the INT instructions is improved to 3 times faster, this program may run 1.25 times faster.
(D) This program may run 1.8 times faster by improving the speed of FP instructions.