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

Overflow or underflow for floating point numbers, In floating point numbers...

In floating point numbers when so you say that an overflow or underflow has occurred? Ans: A) In single precision numbers when an exponent is less than +127 then we say that

How sensors uses in real time process control, How sensors uses in real tim...

How sensors uses in real time process control Sensors send data (through an analogue to digital converter - ADC) to a microprocessor or computer that decides whether or not to

What is monitoring-and-surveillance agents, Q. What is monitoring-and-surve...

Q. What is monitoring-and-surveillance agents? ANSWER: Monitoring-and-surveillance agents or predictive agents are intelligent agents that examine and report on equipment.

Create perl scripts, Create Perl scripts as required below: a) Create a ...

Create Perl scripts as required below: a) Create a script named select_by_attribute.pl that accepts the name of a LibML documentand the name of a particular attribute from the c

States briefly the generic framework for e-commerce, States briefly the gen...

States briefly the generic framework for e-commerce. Generic framework of e-commerce comprises the Applications of e-commerce (as like banking, shopping within online stores an

Ldb need not be defined in the abap/4 dictionary, All nodes in the structur...

All nodes in the structure of LDB need not be defined in the ABAP/4 Dictionary False. One has to describe all nodes in the Dictionary or single has to select all nodes that a

What is cartridge drive, Q. What is Cartridge Drive? Cartridge Drive: ...

Q. What is Cartridge Drive? Cartridge Drive: A cartridge is a protective covering or case which is used to hold a magnetic tape, disk, a printer ribbon or toner. Contents are

What is a path name, What is a path name?  A pathname is the path from ...

What is a path name?  A pathname is the path from the root by all subdirectories to a specified file. In a two-level directory structure a user name and a file name describe a

What are the registers generally contained in the processor, What are the r...

What are the registers generally contained in the processor? MAR-memory address register MDR-memory data register IR-Instruction Register RO-Rn-General purpose registe

Feasebility study, what are the feasibility study of online result manageme...

what are the feasibility study of online result management system?

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