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

Milestones, Here are some common development milestones that  you should ai...

Here are some common development milestones that  you should aim for: 1. Send a packet over. Send an acknowledgement back. 2. Have checksum algorithm executed 3. Ability t

Capacity and performance of storage - computer architecture, Capacity: ...

Capacity: Raw capacity Total amount of stored information that a medium or storage device can hold is expressed as a quantity of bytes and bits (for example 10.4 megabyte

Transportation model, advantages and disadvantages of northwest corner meth...

advantages and disadvantages of northwest corner method and least cost method

Hiring problem algorithm, Consider the Hire Assistant problem. We interview...

Consider the Hire Assistant problem. We interview n candidates and always hire the best qualified so far. Let n = 5 for our example. Find the probabilities that we hire exactly 1 t

What is artificial intelligence recognition, There are two goals to AI; the...

There are two goals to AI; the major one is to produce an artificial system that is about as good as or good than a human being at dealing with the actual world. The second goal is

Coso framework, The COSO Framework consists of six broad classes of control...

The COSO Framework consists of six broad classes of control activities. Initial responses should identify and define one of the broad classes (Ex: segregation of duties or indepe

Explain automated and manual systems, Q. Explain Automated and Manual syste...

Q. Explain Automated and Manual systems? Automated and Manual systems: The system that doesn't need human intervention is known as'Automated system'. In this system whole proce

System programming, concurrentisation and vectorisation of program

concurrentisation and vectorisation of program

Describe the errors, Q. Describe the Errors? Errors  Two probable...

Q. Describe the Errors? Errors  Two probabletypes of errors may take place in assembly programs:   a. Programming errors: They are familiar errors you may encounter in

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