What is Pipelining?

Consider laundry:

This only takes 3.5 hours!
We are pau by 9:30.


                    Time sequentially     360
          Speedup = -----------------  =  ---  = 1.71
                      Time pipelined      210
But we would expect ideal speedup to be the number of pipeline stages (3).

What went wrong?

So, what about for a CPU?


[up] to Overview.