Question: Given the results in this graph, what would you say to a person that argues that you should build a chip that is capable of 12-wide superscalar execution (can execute up to 12 instructions from a single instruction stream at once!) Is this person's idea a wise one? Why or why not?
Kaharjan
It may depend on situation. In stock market prediction, minor speedup in prediction may result in huge revenue. In this situation this person's idea is wise. In word processing, it may not wise.
limin
In my opinion, it is unwise. From the figure, we can see when the instruction issue capability is more than 8, the speedup won't increase at all. So if you still increase the issue capability, it will be a waste of hardware resources.
Question: Given the results in this graph, what would you say to a person that argues that you should build a chip that is capable of 12-wide superscalar execution (can execute up to 12 instructions from a single instruction stream at once!) Is this person's idea a wise one? Why or why not?
It may depend on situation. In stock market prediction, minor speedup in prediction may result in huge revenue. In this situation this person's idea is wise. In word processing, it may not wise.
In my opinion, it is unwise. From the figure, we can see when the instruction issue capability is more than 8, the speedup won't increase at all. So if you still increase the issue capability, it will be a waste of hardware resources.
@Kaharjan, @limin: I agree with both answers.