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

Show the communication between switches in VLAN, Q. Show the Communication ...

Q. Show the Communication between Switches? Communication between Switches - Must know which station belongs to which VLAN as well as membership of stations connected to

What is bens network, Q. What is Bens Network? It's a non-blocking netw...

Q. What is Bens Network? It's a non-blocking network. It's a special type of Clos network where first and last stage consists of  2×2 switches (for n input  and m output networ

Sharing information - network layer and routing , Sharing  information  ...

Sharing  information  To understand  how distance vector routing  works examine the  internet shown in  the  clouds represents local  area network . the  number  inside each c

Configure vtp on the switches - ccna, Configure VTP on the Switches VTP...

Configure VTP on the Switches VTP permits the network administrator to control the instances of VLANs on the network by creating VTP domains. Within each VTP domain, one or mor

Prepare network schema of a company, Your Case Study must be based on the i...

Your Case Study must be based on the information provided. There will be no additional information. This must be submitted in a .doc, or .pdf format. If you send a few paragraphs i

Illustrate the term- search engine and surfing, Illustrate the term- Search...

Illustrate the term- Search Engine and Surfing Search Engine: Software used to find information on the Web. Examples are Google, Lycos and Yahoo. Server: A computer with

Bit stream structure, In OSI 7 layer model, a header, or possibly a trailer...

In OSI 7 layer model, a header, or possibly a trailer, can be added to the data unit at each layerI 7 layer, but we will define a simple virtual packet which contains only 8bit dat

At which layer of the osi model repeaters work, At the Physical layer of ...

At the Physical layer of the OSI model Repeaters work by regenerating the signal to extend the distance it can travel.

Determine the window positions for succession of events, Two neighbouring n...

Two neighbouring nodes (A and B) use a Go-Back-N protocol with a 3-bit sequence number and a window size of 4. Acknowledgments are cumulative. Assuming A is transmitting and B is r

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