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

Table - tr and td tags, Table, TR and TD Tags Three tags form the essen...

Table, TR and TD Tags Three tags form the essential ingredients for creating a table. TABLE: This is the main tag. It tells the browser that a table follows. It has attrib

Rpn procedure, Apply this algorithm to your MASM program 1) Declare the ...

Apply this algorithm to your MASM program 1) Declare the following variables in your data segment: .data ; ; These are the values of the variables ; Variables

Explain topology method used in lan technology in detail, Explain topology ...

Explain topology method used in LAN technology in detail. LAN Topologies: Network topology is a physical schematic that shows interconnection of the various users. There are

How can we pass selection and parameter data to a report, How can we pass s...

How can we pass selection and parameter data to a report? There are three options for passing selection and parameter data to the report. Using SUBMIT...WITH Using a rep

Categorize the cpu scheduling algorithms, Categorize the CPU scheduling alg...

Categorize the CPU scheduling algorithms? The various CPU scheduling algorithms are categorized as given below:

How to copy several files in one stroke, Q. How to copy several files in on...

Q. How to copy several files in one stroke? The COPY command can also be used to copy several files in one stroke by using wildcards. For example, consider the following comman

What is the use of buffer register, What is the use of buffer register? ...

What is the use of buffer register? The buffer register is used to avoid speed mismatch among the I/O device and the processor.

What are the requirements of the user, This step of systems examination is ...

This step of systems examination is one of the most difficult. In this stage systems specifications are identified by asking what, who, when, where and how. A few questions address

Real-time systems, This document is intended to help students get started w...

This document is intended to help students get started with the real-time systems (RTS) assignment. We will start on the assignment together in the laboratory. Students will then c

What are sections, Layout pages, can describe sections, which can then be o...

Layout pages, can describe sections, which can then be overridden by particular views making use of the layout. Major and overriding sections is optional.

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