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

What is 100base-fx, 100Base-FX Utilizes two identical optical fiber...

100Base-FX Utilizes two identical optical fibers in star topology One fiber holds frames from the station to hub one from hub to station Encoding is 4B/5B Si

Classes and dotted decimal notation, The relationship between dotted decima...

The relationship between dotted decimal notation and classes is shown as follows. In class A the three octets managed to a host suffix. In class B the last most two octets ar

Concept of permutation network, Concept Of Permutation Network In permu...

Concept Of Permutation Network In permutation interconnection networks the information replace requires data transfer from input set of nodes to output set of nodes and likely

Hardware difficulty of benz network, Hardware difficulty of Benz Network: -...

Hardware difficulty of Benz Network: - Benz network uses smaller switches and it gives excellent connectivity.  To find hardware difficulty of Benz network let us presume that

How to Assign switch ports to VLAN, Assign switch ports to VLANs. Refe...

Assign switch ports to VLANs. Refer to the port assignment table at the starting of the lab to assign ports to the VLANs. Use the interface range command to make simpler this

Illustrate about the working of socks protocol, Illustrate about the workin...

Illustrate about the working of Socks protocol SOCKS is an open, industry-standard protocol advanced by the Authenticated Firewall Traversal working group of the IETF (Internet

Describe the importance of backups, Question: (a) Describe the importa...

Question: (a) Describe the importance of backups and the use of antivirus software. (b) With the help of an example/ illustration, explain the term encryption and explain

Explain about the digital traffic channels, Explain about the Digital traff...

Explain about the Digital traffic channels The most notable difference among the two generations is that first generation systems are almost purely analog, while second generat

Programming based on data parallelism, Programming Based on Data Parallelis...

Programming Based on Data Parallelism In a data parallel programming model, the focus is on data distribution. Every processor works with a portion of data. We shall discuss on

What is the frame relay, What is the Frame relay, in which layer it comes? ...

What is the Frame relay, in which layer it comes? Ans) Frame relay is an industry standard, shared access, switched Data Link Layer encapsulation that services many virtual circ

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