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	OpenMP - Wikipedia, the free encyclopedia
		Jointly defined by a group of major computer hardware and software vendors, OpenMP is a portable, scalable model that gives programmers a simple and flexible interface for developing parallel applications for platforms ranging from the desktop to the supercomputer.
		GCC 4.2 will support OpenMP, though it is likely that some distributors will add OpenMP support already to their GCC 4.1 based system compilers.
		A large portion of the program may not be parallelized by OpenMP, which sets theoretical upper limit of speedup according to Amdahl's law.
	en.wikipedia.org /wiki/OpenMP (1283 words)

	[No title]
		OpenMP is easy to use and consists of only two basic constructs: pragmas and runtime routines.
		Additionally, OpenMP does place restrictions on the form of for loops that are allowed inside of a #pragma omp for or #pragma omp parallel for block.
		OpenMP automatically handles all of these details, and additionally gives the programmer some more knobs to turn to configure their parallel regions and code.
	msdn.microsoft.com /msdnmag/issues/05/10/OpenMP (6621 words)

	OpenMP: FAQ
		OpenMP is a specification for a set of compiler directives, library routines, and environment variables that can be used to specify shared memory parallelism in Fortran and C/C++ programs.
		OpenMP is designed for Fortran, C and C++ to support the language that the underlying compiler supports.
		For example, OpenMP could be implemented for a distributed memory system on top of MPI, so OpenMP's latencies would be greater than that of MPI (whereas typically the reverse is the case on a shared-memory system).
	nereida.deioc.ull.es /html/openmp/qa.html (1855 words)

	Using OpenMP to Parallelize a Program
		OpenMP is an emerging standard for parallelizing programs in a shared memory environment.
		OpenMP is a set of standards and interfaces for parallelizing programs in a shared memory environment.
		OpenMP provides a few runtime enviromental variables that can be used to control the behaviour of the openmp-program.
	developers.sun.com /solaris/articles/openmp.html (1393 words)

	OpenMP and Auto-Parallelization: Tools for Dual-Core and Multi-Core
		OpenMP is for explicit parallelism through a set of C++ preprocessor pragmas and Fortran compiler directives.
		OpenMP, as described above, is a specification for issuing compiler directives and pragmas to "hint" to the compiler where code may be explicitly parallelized.
		OpenMP uses what's called a fork-join model for parallel execution, and was explicitly designed to support situations where the code might be executed either in series (on a single-threaded box) or in parallel (or a multi-processor or multi-core chip).
	www.devx.com /Intel/Article/28617 (1894 words)

	Introducing OpenMP: A Portable, Parallel Programming API for Shared Memory Multiprocessors (Site not responding. Last check: 2007-10-09)
		OpenMP is an emerging standard model for parallel programming in a shared memory environment.
		OpenMP is a set of specifications and interfaces for parallelizing programs in a shared memory environment.
		OpenMP is a widely accepted specification, and vendors like Sun, KAI, and SGI support it.
	developers.sun.com /prodtech/cc/articles/openmp/openmp_content.html (1374 words)

	Welcome to HPCVL -- OpenMP FAQ
		OpenMP is a system of so-called "compiler directives" that are used to express parallelism on a shared-memory machine.
		OpenMP has become an industry standard for such directives, and at this point, most parallel enabled compilers that are used on SMP machines are capable of processing OpenMP directives.
		The OpenMP standard has had a rather short and steep career: it was introduced in 1997 and has since sidelined all other similar systems.
	www.hpcvl.org /faqs/mpi/OpenMP.html (2251 words)

	OpenMP \| OpenMP: Simple, Portable, Scalable SMP Programming
		OpenMP ARB The OpenMP ARB is pleased to announce the release of the Version 2.5 specification.
		IWOMP 2005 IWOMP is the consolidation of three OpenMP workshops: the European Workshop on OpenMP (EWOMP), the Workshop on OpenMP Applications and Tools (WOMPAT), and the Workshop on OpenMP Experiences and Implementation (WOMPEI).
		OpenMP ARB The OpenMP ARB is pleased to announce the release of a draft of the 2.5 specifications for public comment.
	www.openmp.org (1557 words)

	SGI - OpenMP (Site not responding. Last check: 2007-10-09)
		OpenMP consolidates these directive sets into a single syntax and semantics, and finally delivers the long-awaited promise of single source portability for shared-memory parallelism.
		OpenMP provided an opportunity for the two companies to revisit the requirements for parallel programming, review the strengths and weaknesses of these earlier sets of directives, and design a more refined parallel model.
		Because of the similarities between OpenMP and the directives currently available on these systems, existing back-end compiler and library technologies were used to implement OpenMP, and this technology is what determines the ultimate performance of the model.
	www.mcsr.olemiss.edu /texastech/powerlearn/openmpfaq.html (2284 words)

	LRZ: OpenMP - Parallel programming on shared memory systems (Site not responding. Last check: 2007-10-09)
		OpenMP is a parallelization method available for the programming languages Fortran, C and C++, which is targeted to use on shared memory systems.
		However, an OpenMP aware compiler will be capable of transforming the code-blocks marked by OpenMP directives into threaded code; at run time the user can then decide (by setting suitable environment variables) what resources can be directed to the parallel parts of his executable, and how they are organized or scheduled.
		On the IBM p690 ibmsmp OpenMP 2.0 is supported for Fortran and C, however not C++.
	www.lrz-muenchen.de /services/software/parallel/openmp (1261 words)

	Choosing between OpenMP* and Explicit Threading Methods
		OpenMPâs greatest attributes are this portability and the simplicity it brings to parallel programming.
		OpenMP cognoscenti discourage the use of environment variables and APIs, however, because it reduces the portability of the original program and places a key factor outside the programâs control.
		In counterpoint, OpenMP implementations have a history of very reliable performance, so if code does not work correctly under OpenMP, chances are very good that your code, rather than OpenMP, is to blame.
	www.intel.com /cd/software/products/apac/zho/vtune/vlin/167238.htm (1824 words)

	OpenMP in TutorGig Tutorials (Site not responding. Last check: 2007-10-09)
		tru64 unix cxml dpmirun exceed fortran dxml lapack matlab mpi openmp ssh tools: compilers matlab gnqs mpi openmp exceed mpi what is mpi mpi(message passing interface) is a thread-safe standard library...
		tru64 unix cxml dpmirun exceed fortran dxml lapack matlab mpi openmp ssh tools: compilers matlab gnqs mpi openmp exceed introduction to unix the goal of this tutorial is to acquaint you with a subset...
		openmp is a new high-performance parallel execution scheme for shared...
	www.tutorgig.com /t/OpenMP (690 words)

	Intel® Threading Tools and OpenMP*
		OpenMP* is a set of pragmas, API functions, and environment variables that enable you to incorporate threads into your applications at a relatively high-level.
		The OpenMP pragmas are used to denote regions in the code that can be run concurrently.
		OpenMP programs are threaded programs and can suffer from the same errors and performance problems as explicitly threaded applications.
	www.intel.com /cd/ids/developer/asmo-na/eng/66763.htm (533 words)

	OpenMP - Parawiki (Site not responding. Last check: 2007-10-09)
		OpenMP is an application programming interface (API) for Fortran and C++ developed in the early 90's to be used for multi-threaded, shared memory programming.
		OpenMP is based on multiple theads working on the memory.
		OpenMP simplifies usage of pthreads but some features of pthreads were not taken over to OpenMP e.g.
	www.parawiki.org /index.php/OpenMP (797 words)

	Omni OpenMP compiler project
		OpenMP C version of NAS Parallel Benchmarks is available.
		Omni OpenMP compiler is a part of this software that translates C and Fortran77 programs with OpenMP pragmas into C code suitable for compiling with a native compiler linked with the Omni OpenMP runtime library.
		OpenMP Fortran 77, ompf77, now supports almost features, which were not supported in the previous beta version.
	phase.hpcc.jp /Omni/home.html (621 words)

	cOMPunity - The Community of OpenMP Users
		OpenMP was developed by a consortium of computer vendors to enable the creation of portable, high-level shared memory parallel programs under Fortran, C and C++.
		It is a repository of resources for learning about OpenMP, reading about the experiences of application developers who use the language, and for finding out about recent research activities.
		The OpenMP ARB is sponsoring a programming contest with prizes to be awarded at the OpenMP BOF session of the Supcercomputing conference in Seattle Nov 12-18, 2005.
	www.compunity.org (265 words)

	OpenMP on Seaborg
		OpenMP can only be used among the processors of a single node.
		OpenMP provides many ways to write codes which compile and run, but provide unexpected results, particularly for codes with large granularity (e.g., calls to subroutines).
		OpenMP and MPI can be freely mixed in Fortran source code.
	www.nersc.gov /nusers/resources/SP/openmp.php (1036 words)

	OpenMP Exercise
		Their primary purpose is to demonstrate the basics of how to parallelize a code with OpenMP.
		This example demonstrates use of the OpenMP SECTIONS work-sharing construct Note how the PARALLEL region is divided into separate sections, each of which will be executed by one thread.
		The parallelism is accomplished by using the OpenMP loop work-sharing construct.
	www.mhpcc.edu /training/workshop2/openMP/exercise.html (1009 words)

	Intel® Tools for Thread-Oriented Development on Linux* (Site not responding. Last check: 2007-10-09)
		OpenMP is a threading specification designed by a hardware vendor collective known as the OpenMP Architectural Review Board (ARB).
		OpenMP uses pragmas to tell the compiler to thread a loop, for example.
		In addition to this radical simplicity, OpenMP has the benefit that it does not require code to be changed to run in single-threaded mode for debugging purposes.
	developer.intel.com /cd/ids/developer/asmo-na/eng/os/linux/167246.htm?page=2 (517 words)

	Intel OpenMP Workshop - Intel Workshop (Site not responding. Last check: 2007-10-09)
		Cluster OpenMP is an implementation of the OpenMP standard that runs on a cluster.
		The OpenMP standard specifies a set of directives for use in C, Fortran, and C++ that can be used to run programs in parallel on shared memory multiprocessors.
		A simple extension to the OpenMP standard (the sharable directive) may be required in order to run a program using Cluster OpenMP.
	www.tlc2.uh.edu /IntelOpenMP (233 words)

	Choosing between OpenMP and Explicit Threading Methods
		Here are guidelines to identify whether OpenMP is an appropriate choice for a given situation.
		The braces tell OpenMP exactly what portions of the code the pragma covers, which is why OpenMP pragmas are immediately followed either by a single statement—as in Figure 1—or by an opening curly brace, as in Figures 2 and 3.)
		As we have seen, OpenMP is a powerful, portable, and simple means of threading programs.
	www.devx.com /Intel/Article/21838/2217?pf=true (1882 words)

	OpenMP (Site not responding. Last check: 2007-10-09)
		OpenMP is based upon the existence of multiple threads in the shared memory programming paradigm.
		Fortran compilers which are OpenMP enabled generally include a command line option which instructs the compiler to activate and interpret all OpenMP directives.
		Static (lexical) Extent: OpenMP directives which are immediately visible within a parallel region are said to exist within its static or lexical extent.
	www.mhpcc.edu /training/workshop2/openMP/MAIN.html (6219 words)

	OpenMP Parallel Processing
		Compaq C supports the OpenMP specification, which defines a set of compiler directives that provide shared memory parallelism in C programs.
		The OpenMP directives lets you write code that can run concurrently on multiple processors without altering the structure of the source code from that of ordinary ANSI C serial code.
		Continue from this point to allow the parallel region for OpenMP thread 0 to complete and print the "Hello World" message with the proper OpenMP thread number before the breakpoint is hit again.
	h30097.www3.hp.com /compaq_c/doc/prog_gd/PPCHPXXX.HTM (2940 words)

	ARSC HPC Users' Newsletter 252
		As such, the discussions about the current state of OpenMP and the future of OpenMP were lively and informative.
		OpenMP is DEFINITELY the simplest parallel programming language that I have ever seen.
		The fact that OpenMP is designed for a "flat address space" that doesn't really exist in modern computer systems is probably the biggest drawback to true scalable parallel performance.
	www.arsc.edu /support/news/HPCnews/HPCnews252.shtml (1260 words)

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