申論題

1. You are the lead designer of a new processor. The processor design and compiler are
complete, and now you must decide whether to produce the current design as it stands or spend
additional time to improve it. Please consider and answer the following problems.
1.2 The compiler team proposes to improve the compiler for the machine to further enhance
performance. Call this combination of the improved compiler and the base machine Mcomp. The
instruction improvements from this enhanced compiler have been estimated as follows.
Instruction class Percentage of instruction executed vs. base machine

For example, if the base machine executed 500 class A instructions, Mcomp would execute 0.9 x
500 = 450 class A instructions for the same program. What is the CPI for Mcomp? How much faster
is Mcomp than Mbase? Copy Table 

1-2 to your answer sheet and fill in the blanks with your answers.