The Gateway to Computer Science Excellence
First time here? Checkout the FAQ!
x
+4 votes
550 views
Many of the advanced microprocessors prefetch instructions and store it in an instruction buffer to speed up processing. This speed up is achieved because ________
in CO and Architecture by Veteran (52.1k points)
retagged by | 550 views

5 Answers

+12 votes
Best answer
Because CPU is faster than memory. Fetching instructions from memory would require considerable amount of time while CPU is much faster. So, prefetching the instructions to be executed can save considerable amount of waiting time.
by Veteran (416k points)
selected by
+1 vote
In computer architecture, instruction prefetch is a technique used in microprocessors to speed up the execution of a program by reducing wait states.

So, the speed up is achieved because the wait states are reduced.
by Boss (33.8k points)
0 votes
Instruction prefetching is also useful in case of execution of branch instruction on pipelined processors.

Target instructions can be prefetched thereby reducing the chance of pipeline flush/clean when a branch instruction is executed.
by Active (2k points)
0
You meant branch prediction rt?
+1
Like Instruction Prefetching, Branch prediction is yet another method for avoiding stall cycles during execution of branch instruction in pipelined processor.

Instruction Prefetching is like caching.
0 votes

Pipe lining as parallel processing is not feasible in general.

by Active (3.7k points)
–1 vote
by Active (4k points)
0
no particular answer is there

Related questions

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
49,807 questions
54,729 answers
189,338 comments
80,020 users