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

Show the features of collaboration systems, Q. What are basic features that...

Q. What are basic features that collaboration systems might have? ANSWER: Three basic features of collaboration systems are Web-conferencing, project management,

Functions of an operating system, Question a) In multitasking Operatin...

Question a) In multitasking Operating Systems, there are two kinds of multitasking such as the "Preemptive Multitasking" and the "Cooperative Multitasking". Explain the two me

What are rimm, What are RIMM? RDRAM chips can be assembled into larger ...

What are RIMM? RDRAM chips can be assembled into larger modules known as RIMM. It can hold up to 16 RDRAM

Determine the frequency of the input signal, An eight stage ripple counter ...

An eight stage ripple counter uses a flip-flop with propagation delay of 75 nanoseconds.  The pulse width of the strobe is 50ns.  The frequency of the input signal which can be use

Implementation and testing, In this stage of the project you are required t...

In this stage of the project you are required to create a Design document, the Design document must contain the following:  Structure chart Pseudo-code Data Dictionary

Impact of information systems, What are the primary impacts of information ...

What are the primary impacts of information systems on an organization (employer, club, school, religious, etc..) for which you are familiar? What are the primary ways in which

Find the complement of following functions, Q. Find the complement of follo...

Q. Find the complement of following functions and reduce to minimum literals 1. (A+C+D) (A+C+D') (A+C'+D)(A+D') 2. ABC(ABC' + AB'C + A'BC) 3. AB + AB' + A'C +A'C'

Explain about the data logging, Data logging  This technique involves ...

Data logging  This technique involves collecting data automatically using sensors; frequently used when doing scientific experiments or monitoring a system.

two arguments are passed, The velocity of sound in air is 49.02 feet p...

The velocity of sound in air is 49.02 feet per second where is the air temperature in degrees Rankine.  Write a function to execute this.  If just 1 argument is passed to the f

What is pipelining, What is pipelining? The overlapping of implementati...

What is pipelining? The overlapping of implementation of successive instructions is known as pipelining.

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