Replacement policy - cache memories , Computer Engineering

Assignment Help:

Replacement policy:

On a particular cache miss we require to evict a line to build room for the new line

"In an A-way set associative cache, we have A option of which block to evict

"Which block will be booted out?

! random

! least-recently utilized (true LRU is too costly)

! pseudo LRU (about LRU - in case of 4-way set associatively 1 bit keeps track of which pair of blocks is LRU, and then tracking which of the block in per pair is LRU (one bit per pair))

! fixed (processing audio stream)

For a 2-way set associative cache, random replacement has a miss rate approximate

1.1 time greater than LRU replacement. As the caches turn into larger, the miss rate for both replacement strategies drop, and the difference becomes little.

Random replacement is sometimes more better than effortless LRU approximations that may be easily implemented in hardware.

 


Related Discussions:- Replacement policy - cache memories

The first digit of a decimal constant, The first digit of a decimal constan...

The first digit of a decimal constant must be Decimal constants having of a set of digit, 0 to 9, preceded by an optional - or + sign.

Doubly linked list, A doubly linked list is like a linked list except that ...

A doubly linked list is like a linked list except that each node has a pointer both to the next node in the list and to the previous node in the list. There are also pointers to th

Information system today, What is the benefit of MITRE''s evolutionary appr...

What is the benefit of MITRE''s evolutionary approach to KM?

Autonomous rational an agents, Autonomous Rational an Agents: In many ...

Autonomous Rational an Agents: In many cases, it is inaccurate to talk about a single program or a single robot, as the multi-purpose and multi-tasking system of hardware and

Implementation of 4-to-1 multiplexer, Implement the Y(A, B, C) = ∑(2,3,5,6)...

Implement the Y(A, B, C) = ∑(2,3,5,6) function using 4-to-1 multiplexer.   Ans. Y(A,B,C)=∑(2,3,5,6) Here we take B,C as the select bits also A as input. To select the input we can

How to design a sequential circuit, A sequential circuit is signified by a ...

A sequential circuit is signified by a time sequence of external inputs, external outputs and internal flip-flop binary states. So firstly a state diagram and state table is used t

What is object orientation, What is object orientation? Object orientat...

What is object orientation? Object orientation means that we classify software as a collection of discrete objects that incorporate with together DS and behaviour. Four aspe

Mobile computing, Explain the key characteristics of mobile computing appli...

Explain the key characteristics of mobile computing applications

Explain about of unicode, Q. Explain about of Unicode? This is a newer ...

Q. Explain about of Unicode? This is a newer International standard for character representation. Unicode offers a unique code for each character irrespective of Program, platf

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd