What is memory interleaving, Computer Engineering

Assignment Help:

Q. What is Memory Interleaving?

In this scheme main memory is splitted in 'n' equal-size modules and CPU has separate Memory Base register and Memory Address Register for every memory module. Additionally CPU has 'n' instruction register and a memory access system.  When a program is loaded in main memory its successive instructions are stored in successive memory modules. For illustration if n=4 and four memory modules are M1, M2, M3, and M4 then 1st instruction would be stored in M1, 2nd in M2, 3rd in M3, 4th in M4, 5th in M1, 6th in M2 and so on.  Now at the time of execution of program when processor issues a memory fetch command then memory access system creates n consecutive memory addresses and places them in Memory Address Register in right order. A memory read command interprets all 'n' memory modules concurrently and retrieves 'n' consecutive instructions as well as loads them in the 'n' instruction registers. So every fetch for a new instruction results in loading of 'n' consecutive instructions in 'n' instruction registers of CPU. Because instructions are generally executed in sequence in which they were written, availability of N successive instructions in CPU avoids memory access after every instruction execution and total execution time speeds up. Apparently fetch successive instructions aren't useful when a branch instruction is encountered at the time of course of execution. This is because they need new set of 'n' successive instructions, overwriting previously stored instructions that were loaded however some of which weren't executed. The method is very efficient in minimising memory-processor speed mismatch since branch instructions don't take place often in a program.

Figure below explains memory interleaving architecture. The Figure shows a 4- way (n=4) interleaved memory system.

670_What is Memory Interleaving.png

Figure: A 4-way Interleaved Memory


Related Discussions:- What is memory interleaving

How to format expressions by using vba, Format functions can be used to for...

Format functions can be used to format lot of the expressions such as money, time, date, percentages and numbers. These functions are much easier to use in VBA. User defined date,

Define cloud services with example, Define Cloud services with example. ...

Define Cloud services with example. Any web-based application or service offered by cloud computing is known as a cloud service. Cloud services can contain anything from calend

No-signs to the write statement, Suppressing the number signs (+/-) is carr...

Suppressing the number signs (+/-) is carried out using the addition NO-SIGNS to the Write statement.  Statement is wrong.

Interfacing of keyboards, Q. Interfacing of keyboards? The keyboard emp...

Q. Interfacing of keyboards? The keyboard employs a special Input/output port which is similar to a serial port however doesn't explicitly follow the RS-232 serial port standar

Explain advantages and disadvantages of a active document, Explain advantag...

Explain advantages and disadvantages of a active document. The advantage of an active document over a dynamic document lies in its capability to update the information contin

What is garbage collection and what is it used for, In computer science, ga...

In computer science, garbage collection (GC) is a form of automatic memory management. The garbage collector, or just collector, attempts to reclaim garbage, or memory occupied by

Example on public divisor, Q. Example on PUBLIC DIVISOR? Linker appends...

Q. Example on PUBLIC DIVISOR? Linker appends all segments having the same name and PUBLIC directive with segment name into one segment. Their contents are pulled together in co

Explain the do while loops, Explain The do while loops The do while loo...

Explain The do while loops The do while loops is similar, but the test occurs after the loop body is executed. This ensures that the loop body is run at least once.

What are the event key words in interactive reporting, What are the event k...

What are the event key words in interactive reporting? Event Keyword                                                 Event AT LINE-SELECTION         Moment at which the u

What is binary search, Binary Search: Search a sorted array by repeatedly i...

Binary Search: Search a sorted array by repeatedly in-between the search interval in half. Start with an interval covering the entire array. If the value of the search key is less

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