Loop level-levels of parallel processing, Computer Engineering

Assignment Help:

Loop Level

At this level, repeated loop iterations are the applicants for parallel execution. However, data dependencies among subsequent iterations may limit parallel execution of instructions at loop level. There is a lot of scale for parallel execution at loop level.

Ex: In the following loop in C language, for (i=0; i <= n; i++)

A(i) = B(i)+ C(i)

Each of the instruction A(i) =B(i)+C(i) can be implemented by different processing elements supplied  there are at least n processing elements. But, the instructions in the loop:

for ( J=0, J<= n, J++) A(J) = A(J-1) + B(J)

Cannot be implemented parallel as A(J) is data dependent on A(J-1).  This means that previous to exploiting the loop level parallelism the data dependencies have to be checked:

 


Related Discussions:- Loop level-levels of parallel processing

Explain the different fields of an instructions, Explain the significance o...

Explain the significance of different fields of an instruction An instruction is a command given to a computer to perform a particular operation on some given data and the form

Vliw architecture, Vliw Architecture Superscalar architecture was desig...

Vliw Architecture Superscalar architecture was designed to develop the speed of the scalar processor. But it has been realized that it is not easy to execute as we discussed pr

Bus arbitration - computer architecture, Bus arbitration: In single bu...

Bus arbitration: In single bus architecture when more than 1 device requests the bus, a controller known as bus arbiter decides who gets the bus; this is known as the bus arbi

Explain about the term false path, Explain about the term false path? How i...

Explain about the term false path? How it find out in circuit? What the effect of false path in circuit? By timing all the paths into the circuit the timing analyzer can find o

Main benefits of cd-rom, The main benefits of CD-ROMs are: These are...

The main benefits of CD-ROMs are: These are removable disks, thus they are suitable for archival storage mass replication is cheap and fast large storage capacity

What is assembly language, What is assembly language? A complete set of...

What is assembly language? A complete set of symbolic names and rules for the use of machines comprise a programming language, usually referred to as an assembly language.

Operation research, how to implement a modified distribution method using c...

how to implement a modified distribution method using c/c++

Induction that your closed formula , Show by induction that your closed for...

Show by induction that your closed formula from (c) is the number of times that the given statement is implemented for a problem of size n.Note: if your proof is easily  a proof th

Criteria for selecting a theme for a project, Q. Criteria for selecting a t...

Q. Criteria for selecting a theme for a project? Topics for projects as we indicated earlier should emerge from the children's world. Teaching often becomes boring and unintere

What is the file-system security, What is the File-system security Most...

What is the File-system security Most commercial servers use a powerful operating system as base that provides good methods of file-system security. Some servers require additi

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