Illustrate the cache memory operation, Computer Engineering

Assignment Help:

Q. Illustrate the Cache Memory Operation?

It comprises a copy of a part of main memory contents. When a program is running and CPU tries to read a word of memory (instruction or data) a check is made to decide if word is in cache. If so that word is delivered to CPU from cache. If not then a block of main memory comprising some fixed number of words including requested word is read in the cache and then requested word is delivered to CPU. Due to the feature of locality of reference when a block of memory word is fetched in cache to satisfy a single memory reference it is expected that there will soon be references to other words in that block. Which is the next time CPU attempts to read a word it's very probable that it finds it in cache and saves time required to read word from main memory.

Various computer systems are designed to have two separate cache memories known as data cache and instruction cache. Instruction cache is used for storing program instruction and data cache is used for storing data. This allows faster identification of availability of accessed word in cache memory as well as it helps in further improving processor speed.  Several computer systems are also designed to have multiple levels of caches (like level one and level two caches generally referred to as L1 and L2 caches). L1 cache is smaller than L2 cache and is used to store more often accessed data/instruction as compared to those in L2 cache.

409_Illustrate the Cache Memory Operation.png


Related Discussions:- Illustrate the cache memory operation

Explaintask and parallel task, Task   A task is logically discrete ...

Task   A task is logically discrete section of computational work. A task is normally a program or else set of instructions which are executed by a processor. Parallel

Determine the basic machine language instructions, Determine the basic Mach...

Determine the basic Machine language instructions Machine language instructions and data are in terms of 0s and 1s and are stored in the memory. It isn't possible to distinguis

Explain isdn addressing with a example, Explain ISDN Addressing with a exam...

Explain ISDN Addressing with a example. A sub address, though a part of the ISDN address, is not seems as an integral part of the numbering scheme. Sub-address is carried in a

Determine the term- files, Determine the term- Files File maintenance i...

Determine the term- Files File maintenance is significant. Updating of files generally involves inserting, amending and deleting data. Example: A bank would amend data

Define the uniform memory access model (uma), Normal 0 false ...

Normal 0 false false false EN-US X-NONE X-NONE

What is shadow ram, Shadow RAM is a copy of Basic Input/Output Operating Sy...

Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be acc

Instruction set for ia - 64 architecture, Q. Instruction set for IA - 64 ar...

Q. Instruction set for IA - 64 architecture? Instruction set: Architecture gives instructions for multimedia operations as well as floating point operations. Itanium supports

Catch output from child tasks, Q. Catch output from child tasks? ...

Q. Catch output from child tasks? int pvm_catchout( FILE *ff ) Catch output from child tasks. ff is file descriptor on which we write collected output. The defau

Optical resolution of scanner, Optical resolution or hardware resolution is...

Optical resolution or hardware resolution is mechanical limit on resolution of Scanner. For scanning the sensor has to advance after every line it scans. Smallness of this advancem

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