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Description: Why is a two-stage instruction pipeline unlikelyto cut the instruction cycle time in half,compared with the use of no pipeline?

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Why is a two-stage instruction pipeline unlikely to cut the instruction cycle time in half, compared with the use of no pipeline?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Why is a two-stage instruction pipeline unlikely
to cut the instruction cycle time in half,
compared with the use of no pipeline?

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Why is a single instruction in a pipeline datapath not shorter than that in a multi-cycle datapath even though totally a pipeline mechanism performs better. Please select the correct choice. a - Because of quicker time of execution of large number of instructions b - Because pipelined CPUs generally work at a higher clock frequency than the RAM clock frequency, c - Because it is possible to execute multiple instructions sequentially d - Because in a pipeline architecture, 1 instruction abandons the pipeline in each cycle, so the CPI will be of 1. e - Because increase in the number of pipeline stages increases the number of instructions executed simultaneously.
Given a pipelined processor with 3 stages and inter-stage registers after each stage, calculate the throughput and latency in appropriate units. You need not calculate the final value for throughput. Just the fractional number is sufficient. Make sure to indicate the correct units. (pico: 10-12; nano: 10-9; micro: 10-6; mega: 106; giga: 109; tera: 1012) 50 ps 20 ps 150 ps 20 ps 100 ps 20 ps Comb. logic A R Comb. logic Comb. logic в g Clock
clock cycle at which the first of the instructions is fetched as clock cycle 1. Assume that if one instruction reads a register during the same clock cycle as another instruction is writing it, the new value will be read. Do not reorder the instructions. Instructions are fetched and executed exactly in the order given below, with the pipeline stalling if necessary.addi $s2, $s2, 1li $s6, 5add $s1, $s2, $s3move $s5, $s6lw $t1, 0($s5)
part a,b and c already answered earlier Part D and E please only thanks
Suppose we had a processor design with 5 stages where each stage takes the following amount of time: IF: 400 ps ID: 200 ps EX: 300 ps MEM: 500 ps WB: 200 psQ1: If you choose a pipelined design, what is the CPI? Assume that we have enough instructions such that the brief ramp up period at the beginning and the ramp down period at the end with less than 100% utilization does not matter. Q2: If you choose a pipelined design, what is the average execution time per instruction in picoseconds?
A pipelined processor executing with a constant clock rate has 5 stages. The five stages are Fetch, Decode, Execute, Memory Access and Write Back. Latency of the stages are 100, 80, 120, 150 and 140 nanoseconds respectively. If a register which has a delay of 10 ns is used between the different stages of the pipelined processor. The time taken to execute 2001 instruction for a pipelined processor is microseconds.
Draw the complete instruction cycle diagram with 10 states (including indirect and interrupt states). Note that you need to draw the diagram with all labels correctly depicted to get a full mark or you will receive none.
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