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

Arrays of any size, Modify your program so that the line "int numStones = u...

Modify your program so that the line "int numStones = ui.readStones();" in the Game constructor is considered. Depending on the value of numStones read from the user, you should cr

Diffrence between cd-r vs cd rw, Q. Diffrence between CD-R vs CD RW? A ...

Q. Diffrence between CD-R vs CD RW? A CD-R disc looks same as a CD. Though all pressed CDs are silver, CD-R discs are gold or silver on their label side and a deep cyan or gree

Important part of process - canonical genetic algorithm, Important part of ...

Important part of Process - canonical genetic algorithm: In such a scenario evolution or random mutations are often highly deleterious or can say harmful to the organism it me

Determine maximum possible time of 4-bit synchronous counter, A 4-bit synch...

A 4-bit synchronous counter uses flip-flops with propagation delay times of 15 ns each.  The maximum possible time required for change of state will be ? Ans. 15 ns since in sy

What is called when a star connected intermediate exchange, A star connecte...

A star connected intermediate exchange is known as a? A star connected intermediate exchange is termed as a Hub exchange.

Example on cyclic distribution of data, Q. Example on Cyclic Distribution o...

Q. Example on Cyclic Distribution of data? !HPF$ PROCESSORS P1(4) !HPF$ TEMPLATE T1(18) !HPF$ DISTRIBUTE T1(CYCLIC) ONTO P1 The result of these instructions is display

Mating - canonical genetic algorithm, Mating: Therefore once our GA ag...

Mating: Therefore once our GA agent has chosen the individuals lucky sufficient as actually there  fit enough to produce offspring then we next determine how they are going to

Explain the main part of step by step switching system, Explain the main pa...

Explain the main part of configuration of a step by step switching system with the help of a neat diagram . Configuration of a step by step switching system: A step

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