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

What is the necessity of interfacing in digital ic, What is the necessity o...

What is the necessity of Interfacing in digital ICs and what are the points to be kept in view, while interfacing between TTL gate and CMOS gate? Ans: To realize the optimum

Mips - computer architecture, MIPS - computer architecture: The MIPS ...

MIPS - computer architecture: The MIPS ISA, so far 3 instruction formats Fixed 32-bit instruction 3-operand, load-store architecture 32 general-purpose register

Define constraints, Define Constraints Constraints can be defined as P...

Define Constraints Constraints can be defined as Preconditions (input values) and Post Conditions (output values). Preconditions on functions are constraints which input value

What are the two primary models of supply chain management, What are the tw...

What are the two primary models of Supply Chain Management? The Two Primary models of Supply Chain Management are:- 1.  Porter's Value Chain Model 2. Supply Chain Model

Inverse of exclusive or known as xnor gate, Truth table of NAND and NOR can...

Truth table of NAND and NOR can be made from NOT (A AND B) and NOT (A OR B) correspondingly. Exclusive OR (XOR) is a special gate whose output is one only if two inputs aren't equa

Describe about digital audio tape, Q. Describe about Digital Audio Tape? ...

Q. Describe about Digital Audio Tape? The most proper tape for backing up data from a disk today is Digital Audio Tape (DAT). It employs a 4mm tape covered in a cartridge. It e

What is the advantage of buffering, What is the advantage of buffering? Is ...

What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example. I/O buffer: One type of input-output requirement arises from d

What is language of a model, What is language of a model?   Language of...

What is language of a model?   Language of a model is the collection of formulae that use only the relational symbols the model assign and that use every relation symbol with t

Add the equation by using 2's compliment, Add 20 and (-15) using 2's comple...

Add 20 and (-15) using 2's complement ? Ans. Addition of 20 and (-15) by using 2's complement as (20) 10 = 1 0 1 0 0                                                  (16

State and prove demorgan's second theorem, State and prove Demorgan's secon...

State and prove Demorgan's second theorem   Proof: Demorgan's second theorem   = A‾ + B‾ The two sides of the equation here   = A‾ + B‾ is represented through the logic d

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