Multiple bus architecture - computer architecture, Computer Engineering

Assignment Help:

Multiple bus architecture:

One solution to the bandwidth restriction of a single bus is to simply add extra buses. Consider the architecture indicated in given figure that contains N processors, P1 P2 PN, each containing its own private cache, and all linked to a shared memory by B buses BB, B1, B2. The shared memory consists of M interleaved banks M1 M2,MM to permit simultaneous memory requests concurrent access to the shared memory. It ignores the loss in performance that happen if those accesses have to be serialized, which is the case when there is only 1 memory bank. Each processor is linked to every bus and so is each memory bank. When a processor requires accessing a specific bank, it has B buses from which to select. Therefore each processor- memory pair is linked by various redundant paths, which implies that the failure of 1 or more paths can, principally, be tolerated at the cost of some degradation in system performance.

In a multiple bus system many processors may try to access the shared memory simultaneously. To deal with this problem, a policy might be implemented that allocates the available buses to the processors making requests to memory. In particular case, the policy might deal with the case when the number of processors exceeds from the B. For performance point of view this allocation has to be performed by hardware arbiters which, as we will see, add significantly to the difficulty of the multiple bus interconnection networks.

PCout, R=B, MARin, Read, IncPC

  • WFMC
  • MDRoutB, R=B, IRin
  • R4out, R5outB, SelectA, Add, R6in, End.

389_Multiple bus architecture.png


Related Discussions:- Multiple bus architecture - computer architecture

What is functional modelling, What is  Functional Modelling  We know ...

What is  Functional Modelling  We know that Data flow modelling is an ordinary technique used for analysis of a problem in software engineering. It is very useful for analyzi

Disadvantages of stateful multi-layer inspection, Disadvantages of Stateful...

Disadvantages of Stateful Multi-Layer Inspection A firewall such as the SMLI remains completely transparent to both users and applications. Consequently, SMLI firewall does no

Explain about iframe, Q. Explain about IFRAME? is an HTML 4.0 addition...

Q. Explain about IFRAME? is an HTML 4.0 addition to frames toolbox. Presently only MSIE supports . Unlike frames created employing and

What is software quality assuranc, Software QA includes the whole software ...

Software QA includes the whole software development PROCESS - improving and monitoring the process, making sure that any agreed-upon standards and processes are followed, and ensur

Explain the use of structures with pointers., Explain the use of structures...

Explain the use of structures with pointers C permits a pointer to a structure variable. In fact a pointer to a structure is same to a pointer to any other variable. The pointe

Prints the hundreds digit in two integers , Write an application that prin...

Write an application that prints the hundreds digit  in two integers read from the keyboard. For example if the data values are 1456 and 255 respectably, output should include the

Real life decoding, We have not considered the time element in our decoding...

We have not considered the time element in our decoding. An important time for decoding is the time from the address strobe (AS) to when the data is required in a read.   Time

Show the ranges of port numbers, Q. Show the ranges of Port numbers? P...

Q. Show the ranges of Port numbers? Port numbers are divided into three ranges: Well-known ports are those from 0 through 1,023. Registered ports are those from

Define the karnaugh maps (k maps), Define The Karnaugh Maps (K Maps) Th...

Define The Karnaugh Maps (K Maps) The Karnaugh map (K map) provides the systematic method for simplifying a Boolean expression or a truth table function when used properly the

What are the types of electronic payment system, What are the types of elec...

What are the types of electronic payment system? Types of the electronic payment system are as given below: The most Internet payment way for Business to Customer is credit

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