<分区>
Consider a 4 stage pipeline processor. The number of cycles needed by the four instructions I1, I2, I3, I4 in stages S1, S2, S3, S4 is shown below:
S1 S2 S3 S4
I1 2 1 1 1
I2 1 3 2 2
I3 2 1 1 3
I4 1 2 2 2
What is the number of cycles needed to execute the following loop?
For (i=1 to 2) {I1; I2; I3; I4;}
选项是:
16
23
28
30
我的解释:
我哪里错了？
