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

Storage technology, Storage Technology: In the previous section, the, ...

Storage Technology: In the previous section, the, recent innovations relating to the processing aspects of computer technology were discussed briefly. In considering some of t

Explain a schematic diagram of thousand line exchanges, Using a combination...

Using a combination of uniselectors and two motion selectors draw a schematic of thousand line exchanges. The schematic diagram for such an exchange is demonstrated in Fig. All

Explain the necessary conditions for deadlock to occur, Explain the necessa...

Explain the necessary conditions for deadlock to occur. Conditions for deadlock to arise are: i. Mutual exclusion: At least one resource must be held in a non-sharable mo

Propositional logic - artificial intelligence, Propositional Logic - artifi...

Propositional Logic - artificial intelligence: This is a limited logic, which permit  us to write sentences about propositions - statements about the world - which can either b

Explain how someone refine the ratio analysis, Refining the Ratio Analysis ...

Refining the Ratio Analysis Basically, refinement leads to purity. Thus to get a cleaner, more understandable and consistent design need to iterate analysis process.  R

Difference between visual check and parity check, Difference between Visual...

Difference between Visual check and Parity check Visual check This is checking for errors by comparing entered data with original document (NOTE: this is not the same as

What is the function of cu, What is the function of CU? The control uni...

What is the function of CU? The control unit works as the nerve center that coordinates all the computer operations. It issues timing signals that governs the data transfer.

Objectives-parallel computer architecture , Objectives After going thro...

Objectives After going through this part, you will be capable to: Examine the meaning of Pipeline processing and explain pipeline processing architectures; Classify

Explain about the postpurchase interaction briefly, Explain about the postp...

Explain about the postpurchase interaction briefly. Postpurchase Interaction: Customer support and service: The considerations at such can be explained by the followin

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