Scenario 1: Aiden comes in from work. Jane had cooked dinner and is waiting for him so they could eat. However, Aiden is tired and
just wants to go to bed. Jane is furious and refuses to speak to him. In response, he merely goes to their room and sleeps.
Scenario 2:
Aiden comes in from work. Jane cooked dinner and is waiting for him so they could eat. However, Aiden is tired and just
wants to go to bed. Jane is furious and tells him how she feels whenever he does this to her. Aiden empathizes with Jane?s
feelings and offers a compromise; the next time he would be in late for dinner, he promises to call ahead of time.
a.
Which of the following scenarios is an example of supportive communication?
scenario 1
b. scenario 2
C both a and b
d. none of the above

Answer is B

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?