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

Define micro operation, Define Micro operation. The operations implemen...

Define Micro operation. The operations implemented on data stored in the registers are called Micro operation. A microperation is an elementary operation performed on the infor

What property of the architecture of 3g networks, Question: (a) Explain...

Question: (a) Explain how a Mobile Terminating call, from a PSTN phone, is processed in a GSM network. Illustrate your answer with a diagram. (b) Top-Net, a new telecommuni

Paging supervisor - computer architecture, Paging supervisor: This par...

Paging supervisor: This part of the operating system built and manages the page tables. If the  due to dynamic address translation hardware a page fault occurs exception then

Explain about operand address calculation, Q. Explain about Operand Address...

Q. Explain about Operand Address Calculation? In actual machines effective address can be a register address, memory or I/O port address. Register reference instructions for ex

What are the parts of a deployment diagram, ? Nodes: A node shows any hardw...

? Nodes: A node shows any hardware component. The configuration of hardware is shown by attributes of nodes. ? Components: A component shows software. Every component straight

Illustrate header section of a device driver, Q. Illustrate Header section ...

Q. Illustrate Header section of a device driver? Header comprises information which allows DOS to identify the driver. It also comprises pointers which allow it to chain to ot

Find the de broglie wavelength of electron, Q. Find the de Broglie waveleng...

Q. Find the de Broglie wavelength of electron in the fourth orbit of hydrogen atom. We know that,            λ = 2πr / n λ4 = 2πr 4 / 4  = 2π (4 2 r1) / 4  = 2 X

Communications between the user and the server, Communications between the ...

Communications between the user and the server A significant enhancement was achieved when communications between the user and the server was sent in encrypted form and later

Explain about the value chain for a manufactured product, Explain about the...

Explain about the value chain for a manufactured product. The products sold in shops and purchased for use within organizations are the result of a complicated web of relations

Simplify pos expression, Q. For function F(X, Y, Z) = ∑(1, 2, 3, 5, 6) usin...

Q. For function F(X, Y, Z) = ∑(1, 2, 3, 5, 6) using TRUTH TABLE only 1.  Find POS expression 2.  Simplify POS expression 3.  Implement this simplified expression using t

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