Openmp in shared memory programming, Computer Networking

Assignment Help:

OpenMP is a compiler directive based standard developed in the late 1990s jointly by a group of main computer hardware and software vendors. It is portable across a lot of popular platforms including Unix and Windows NT platforms. The OpenMP Fortran API was released on October 28, 1997 and the C/C++ API was released in late 1998. We shall talk about only about C/C++ API.

The OpenMP API uses the fork-join model of parallel implementation. As soon as an OpenMP program starts implementing it creates a single thread of implementation, known as the initial thread. The initial thread implements sequentially. As early as it gets a parallel construct, the thread makes additional threads and works as the master thread for all threads. All of the new threads implement the code inside the parallel construct. Only the master thread continues implementation of the user code beyond the end of the parallel construct. There is no restriction on the number of parallel constructs in a one program. When a thread with its child threads encounters a work-sharing construct, the work inside the construct is separated between the members of the team and implemented co-operatively instead of being implemented by every thread. Implementation of the code by every thread in the team resumes after the end of the work-sharing construct. Library routines and the Synchronization constructs are available in OpenMP to co-ordinate threads and data in parallel and work-sharing constructs.

Each OpenMP directive begins with #pragma omp. The general syntax is

#pragma omp directive-name [Set of clauses]

where omp is an OpenMP keyword. There may be additional clauses (parameters) after the directive name for dissimilar options.

Now, we shall talk about some compiler directives in OpenMP.


Related Discussions:- Openmp in shared memory programming

How receiver detects error, How receiver detects error The frame is 100...

How receiver detects error The frame is 10011101. The generator is 1001. The message after appending the three zeros is 10011101000. The reminder on dividing 10011101000 by 100

Switching via an interconnection network, Switching  via an interconnectio...

Switching  via an interconnection network The switching  techniques  overcome the bandwidth  limitation of a single  shared bus. This technique use a more sophisticated interco

Layer responsible for putting 1s and 0s into a logical group, Name the laye...

Name the layer responsible for putting 1s and 0s into a logical group? Ans) Frames are broken down into 1s and 0s and placed onto the physical medium by the Data Lin layer.

Data types in distributed enrollment protocol, Data Types Each data typ...

Data Types Each data type of Table 1 must be sent according to the specifications below. [INT] Each value of this type is sent as the string representation of the corre

What is meant by symmentric multiprocessing, What is meant by Symmentric Mu...

What is meant by Symmentric Multiprocessing (SMP)? It treats all processors as equal. Any processor can do the work of any other processor. Applications are divided into thread

Network performance measured by delay and throughput, Q. Network performanc...

Q. Network performance measured by delay and throughput ? delay versus load Delay is composed of? Throughput v/s network load

Enumerate about the home page and hot links, Enumerate about the Home Page ...

Enumerate about the Home Page and Hot Links Home Page: The primary Web page for an individual or organisation. These pages link to other related pages. Hot Links: A co

Define the term network throughput, Network throughput It is a symptoma...

Network throughput It is a symptomatic measure of the message carrying capability of a network. It is termed as the total number of messages network can send in per unit time.

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