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

Define layered network model, Q. Define layered network model? - The OS...

Q. Define layered network model? - The OSI Reference Model is collection of seven layers every specifying particular network functions. - The process of breaking up the func

What is an error, Q. What is an Error? At any time bits flow from one p...

Q. What is an Error? At any time bits flow from one point to another they are subject to unpredictable changes because of interference The interference is able to change the

Post office protocols version - application layer, Post Office  Protocols ...

Post Office  Protocols Version In computing  the post office protocol  version 3 (POP3) is an  application layer internet standard  protocols  used by  local e mail  clients

What is a java package, What is a Java package and how is it used? A J...

What is a Java package and how is it used? A Java package is a naming context for classes and interfaces. A package is used to make a separate name space for groups of classes

Osi reference model - fundamentals of networks, OSI Reference  Model ...

OSI Reference  Model Normal 0 false false false EN-IN X-NONE X-NONE

Describe any good security technology, Describe any good security technolog...

Describe any good security technology A good security technology should be powerful enough to support the features that the administrators need, including rules validation to i

Authentication mechanism in vpn, What are the dissimilar ways authenticatio...

What are the dissimilar ways authentication mechanism in VPN?

How two adjacent layers communicate in a layered network, How two adjacent ...

How two adjacent layers communicate in a layered network? (or What do you mean by Service Access Point?) In layered network, each layer has lots of entities and entities of lay

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