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 v - 32 modem, Q. Define V - 32 modem? - ITU-T's V.32 standard w...

Q. Define V - 32 modem? - ITU-T's V.32 standard was issued in 1989 for asynchronous and full-duplex operation at 9600 bps. - Even though designed for asynchronous DTEs two

Name the default lmi type, Cisco is the defaul LMI type. There are thre...

Cisco is the defaul LMI type. There are three types of LMI standards:  ANSI - Annex D defined by ANSI standard T1.617  ITU-T (Q.933A) - Annex A defined by Q933A  Cisco

Dns message - application layer, DNS Message There are  the only  two ...

DNS Message There are  the only  two kinds  of DNS message DNS query and reply messages. Further mote both query  and reply message have  the same  format  as shown in figure.

Define character stuffing, Define Character Stuffing? In byte stuffing ...

Define Character Stuffing? In byte stuffing (or character stuffing), a particular byte is added to the data section of the frame when there is a character with the same pattern

How to configure vtp pruning on the switches-ccna, Configure VTP Pruning on...

Configure VTP Pruning on the Switches VTP pruning permits a VTP server to suppress IP broadcast traffic for particular VLANs to switches that do not have any ports in that VLAN

Discuss about the similarity of intranets to the internet, Discuss about th...

Discuss about the similarity of Intranets to the Internet The ease of use of the end user would be the most noticeable because of the similarity of Intranets to the Internet. S

Link layer process, Each link layer process will have two connections: one ...

Each link layer process will have two connections: one "up" to the appropriate IP layer process, and one "sideways" to the link layer process on the simulated machine at the other

Explain concept of permutation network, Concept Of Permutation Network ...

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

What is the routing algorithm used by rip and igrp, Distance vector-based r...

Distance vector-based routing algorithms (also called as Bellman-Ford algorithms) pass periodic copies of a routing table from router to router. Regular updates among routers commu

Shared programming using library routines, Shared Programming Using Library...

Shared Programming Using Library Routines The most well-liked of them is the use of combo function called fork() and join(). Fork() function is used to make a new child proces

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