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 various design constraints, What are the various Design constr...

What are the various Design constraints used while performing Synthesis for a design? 1. Make the clocks (frequency, duty-cycle). 2. Explain the transition-time requirements

How u can create xml file, How u can create XML file? To write Dataset ...

How u can create XML file? To write Dataset Contents out to disk as an XML file use: MyDataset.WriteXML(server.MapPath("MyXMLFile.xml"))

Why a linked list is called a dynamic data structure, Why a linked list is ...

Why a linked list is called a dynamic data structure? What are the advantages of using linked list over arrays?    A linked list is known as a dynamic data structure because it

What are the standard types of files produced, What are the standard types ...

What are the standard types of files produced? A PDF file is universally recognized by the internet and is also a secure image, given that an electronic footprint remains when

How the simulation is done, How the simulation is done Data is entered ...

How the simulation is done Data is entered into the computer and simulation is run. The below scenarios may be tried out: -  Timing of lights varied to see how traffic flow

Security analysis, Security Analysis: Suppose you are a young securiti...

Security Analysis: Suppose you are a young securities analyst, working in a small brokerage firm. You have access to publicly available information relevant to valuation of th

Utilization summary, Utilization Summary The Utilization Summary shows ...

Utilization Summary The Utilization Summary shows the status of each processor i.e. how much time (in the form of percentage) have been spent by every processor in busy mode, o

Define hex directive, Q. Define HEX directive? HEX: HEX directive enabl...

Q. Define HEX directive? HEX: HEX directive enables the coding of hexadecimal values in body of the program. That statement directs assembler to treat tokens in source file wh

Function modules are also external subroutines, Function Modules are also e...

Function Modules are also external Subroutines. True.

Nmknl''knl, Ask question bhjjnjnnjnjm#Minimum 100 words accepted#

Ask question bhjjnjnnjnjm#Minimum 100 words accepted#

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