Explain loop level of parallel processing, Computer Engineering

Assignment Help:

Loop Level

At this stage, following loop iterations are candidates for parallel execution. Though, data dependencies among subsequent iterations can restrict parallel execution of instructions at loop level. There is vast scope for parallel execution at loop level. 

Illustration: In the subsequent 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) may be implemented by different processing elements provided there are at least n processing elements. Though, the instructions in the loop

 

                        For (J=0; J<= n; J++)

                        A (J) = A (J-1) + B (J)  

Cannot be executed parallely as A (J) is data dependent on A (J-1).  It implies that before using the loop level parallelism the data dependencies should be checked.

 


Related Discussions:- Explain loop level of parallel processing

What is meant by common control, What is meant by common control? In se...

What is meant by common control? In several switching systems, the control subsystem may be an integral part of the switching network itself. This system is termed as direct co

C++, program to find area under the curve y=f(x) between x=a and y=b , inte...

program to find area under the curve y=f(x) between x=a and y=b , integrate y=f(x)between limits of a and b

Explain the main tags of wireless markup language, Discuss the main tags of...

Discuss the main tags of WML. Tag Definition of Wireless Markup Language: This defines the starting and the ending of the page, as .   this explains

Interaction design, This unit introduces the most important ID terminology,...

This unit introduces the most important ID terminology, explains why ID is important, and gives a description of the main ID activities and the characteristics of the ID process. I

Highly encoded micro-instructions, Highly Encoded micro-instructions ...

Highly Encoded micro-instructions Encoded bits required in micro-instructions are small. It provided an aggregated view that is a higher view of CPU as just an encoded

What is closed system, Closed System: It's isolated from environment influ...

Closed System: It's isolated from environment influences. It operates on factors within System itself. It is also described as a System which involves a feedback loop, a control e

Name the numerous household devices, Name the Numerous household devices ...

Name the Numerous household devices Numerous household devices now use microprocessors to control their different functions. The following is just a sample of common devices (d

Send a report to the printer, How to send a report to the printer instead o...

How to send a report to the printer instead of displaying it on the screen? We can send a report to the printer instead of displaying it on the screen.  To do this, use the key

What is preemptive and nonpreemptive scheduling, What is preemptive and non...

What is preemptive and nonpreemptive scheduling? Under nonpreemptive scheduling once the CPU has been allocated to a process, the process keeps the CPU unless it releases the C

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