What is single program multiple data, Computer Engineering

Assignment Help:

Q. What is Single Program Multiple Data?

A general style of writing data parallel programs for MIMD computers is SPMD (single program, multiple data) means all processors execute same program however every processor operates on a separate part of problem data. It's easier to program than true MIMD however more flexible than SIMD. Though most parallel computers today are MIMD architecturally they are generally programmed in SPMD style. In this style though there is not any central controller the worker nodes carry on doing basically the same thing at effectively same time. Rather than central copies of control variables stored on control processor of a SIMD computer, control variables (iteration counts and so on) are generally stored in a replicated fashion across MIMD nodes. Every node has its own local copy of these global control variables however each node updates them in an identical way. There are no centrally issued parallel instructions however communications generally occur in well-defined collective phases. These data exchanges happen in a prefixed manner which implicitly or explicitly synchronizes the peer nodes. The condition is something such as an orchestra without a conductor. There is no central control however every particular plays from the same script. The group as a complete stays in lockstep. This loosely synchronous style has a number of similarities to Bulk Synchronous Parallel (BSP) model of computing introduced by theorist Les Valiant in early 1990's. The limited pattern of the collective synchronization is easier to deal with than complex synchronisation problems of a general concurrent programming.


Related Discussions:- What is single program multiple data

What are the types of operations required for instructions, What are the va...

What are the various types of operations required for instructions?  Data transfers among the main memory and the CPU registers Arithmetic and logic operation on data

Is the data bus is bi-directional, The data bus is Bi-directional because t...

The data bus is Bi-directional because the similar bus is used for transfer of data among Micro Processor and memory or input / output devices in both the direction.

What do you mean by single construct in fortan, Q. What do you mean by Sing...

Q. What do you mean by Single Construct in FORTAN? Single construct specifies the associated structured block is executed by just one thread in team (not essentially the master

History of e-commerce, In 1960: The purpose of e-commerce was to exchange t...

In 1960: The purpose of e-commerce was to exchange the electronic data. In 1970s: Electronic Fund Transfers or EFT was developed which considered as huge impact in the emerging

8085 programs, what is the theory used to check whether a number is negativ...

what is the theory used to check whether a number is negative or positive?

Handlers classification, Handler's Classification In 1977, Wolfgang Han...

Handler's Classification In 1977, Wolfgang Handler proposed an detailed notation for expressing the parallelism and pipelining of computers. Handler's classification addresses

Project, the project database is avilable?

the project database is avilable?

E-r diagrams, for ticket reservation in trains for payroll processing for i...

for ticket reservation in trains for payroll processing for insurance database

Objectives-classification of parallel computers , Objectives After goi...

Objectives After going through this unit, you should be able to: Describe the diffrent criteria on which classification of parallel computers are based; Examine the

Prove boolean identities using boolean algebra, Prove the following Boolean...

Prove the following Boolean identities using the laws of Boolean algebra: ABC + AB ‾C + ABC ‾ = A(B + C) Ans. ABC+AB'C+ABC'=A(B + C) LHS AC(B+B')+AB(C+C') OR  AC+AB OR  A(B

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