Contents
- 1 What is the difference between pipeline depth and pipeline stages?
- 2 What is the pipeline depth?
- 3 How many stages are there in pipeline?
- 4 How many stages are there in the processor pipeline?
- 5 How to visualize the execution sequence in a pipelined processor?
- 6 Which is the best description of pipelining in a computer?
What is the difference between pipeline depth and pipeline stages?
Therefore, shorter pipeline stages cause the overhead to become a greater fraction of the clock period, which reduces the effective frequency gains. In short, pipeline is built of stages (processing blocks separated by registers). The more stages the larger pipeline depth.
What is the pipeline depth?
The pipeline depth is the number of stages—in this case, five. ▪ In the first four cycles here, the pipeline is filling, since there are unused functional units. ▪ In cycle 5, the pipeline is full.
How many stages are there in pipeline?
three stages
But because the pipeline has three stages, an instruction is completed in every clock cycle. In other words, the pipeline has a throughput of one instruction per cycle.
What are the pipeline stages include?
To the right is a generic pipeline with four stages: fetch, decode, execute and write-back. The top gray box is the list of instructions waiting to be executed, the bottom gray box is the list of instructions that have had their execution completed, and the middle white box is the pipeline.
How is depth of a pipeline related to the number of stages?
I think that depth is a measure of the overlapping of instructions while number of stages is a hardware constant. When you increase the number of stages, you usually make the CPU faster but it is with dimishing margin. See Almdahl’s law about this and the book “Computer Organization and Design” by Pattersson and Hennesay.
How many stages are there in the processor pipeline?
Intel had 5 pipeline stages in its original Pentium architecture. The number of stages peaked at 31 in the Prescott family, but decreased after that. Today, in the Core series II processors (i3, i5, and i7), there are 14 stages in the processor pipeline.
How to visualize the execution sequence in a pipelined processor?
Execution in a pipelined processor Execution sequence of instructions in a pipelined processor can be visualized using a space-time diagram. For example, consider a processor having 4 stages and let there be 2 instructions to be executed. We can visualize the execution sequence through the following space-time diagrams:
Which is the best description of pipelining in a computer?
Computer Organization and Architecture | Pipelining | Set 1 (Execution, Stages and Throughput) Pipelining : Pipelining is a process of arrangement of hardware elements of the CPU such that its overall performance is increased. Simultaneous execution of more than one instruction takes place in a pipelined processor.