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

Initial considerations in problem solving, Initial considerations in proble...

Initial considerations in problem solving: Three initial considerations in problem solving for easiest(as described in Russell and Norvig):  Initial State  First

What is trivial file transfer protocol, What is trivial file transfer proto...

What is trivial file transfer protocol? Explain briefly? Trivial File Transfer Protocol (i.e. TFTP) is helpful for bootstrapping a hardware device which does not have a disk on

Write 8086 initialisation routine required to program 8255, Write 8086 init...

Write 8086 initialisation routine required to program 8255 for mode 1 with Port A and Port B as output Ports and Port C as an input port. Indicate all the relevant signals.

8085 programs, what is the theory used to check whether a number is negativ...

what is the theory used to check whether a number is negative or positive?

List all seven layer of osi model, List all seven layer of OSI model and de...

List all seven layer of OSI model and describe function of application layer. The layers of OSI model are as follows: (1) The Physical Layer: It defines an interface in

Find sop expression, A. F(X, Y, Z) = ∑(0, 1, 2, 6, 7) using TRUTH TABLE onl...

A. F(X, Y, Z) = ∑(0, 1, 2, 6, 7) using TRUTH TABLE only B. F(X,Y,Z) = ∑ (4,6,7,8) + D(2,5,11,12) using K-Map 1. Find SOP expression 2. Simplify SOP expression 3. Implem

Communication by message passing, Communication by Message Passing You...

Communication by Message Passing You will agree that a single object alone is generally not very helpful. Objects usually emerge as components of a system or a larger program.

Determine the analog output voltage of 6-bit DAC, Determine the analog outp...

Determine the analog output voltage of 6-bit DAC (R-2R ladder network) with Vref as 5V when the digital input is 011100. Ans. The analog output for 6-bit R-2R DAC ladder network

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