OpenMP

OpenMP is an Application Program Interface (the OpenMP API) for shared-memory parallelism in C, C++, and Fortran programs. See also Pthreads.

For a detailed description of OpenMP, see http://openmp.org/.

Resources

Textbook

Using OpenMP, by: Barbara Chapman, Gabriele Jost and Ruud van der Pas, MIT press, Cambridge, Mass, 2008

This book describes the traditional and for many scientific codes most important concepts of the OpenMP API. The discussion includes performance considerations and common coding mistakes. The book is based on the OpenMP standard 2.5.

Tutorials

• Blaise Barney provides a tutorial on the Lawrence Livermore National Laboratory's webpage

• Tim Mattson from Intel created a video tutorial: Introduction to OpenMP. The tutorial is freely available on youtube. This tutorial also discusses more recent concepts such as the OpenMP task construct.

Standard Specifications

The most recent and earlier versions of the OpenMP standard is available from the OpenMP ARB's website. Starting with OpenMP 4.0 the examples, explaining some of the constructs in-depth, are no longer part of the actual standard document but are available as a separate document.

Experts

These experts have registered specific competence on this subject:

		Field	AE FTE	General activities
Anders Sjöström (LUNARC)	LUNARC	GPU computing MATLAB General programming Technical acoustics	50	Helps users with MATLAB, General programming, Image processing, Usage of clusters
Chandan Basu (NSC)	NSC	Computational science	100	Working on climate and weather codes EU projects IS-ENES and PRACE.
Joachim Hein (LUNARC)	LUNARC	Parallel programming Performance optimisation	85	Parallel programming support Performance optimisation HPC training
Marcus Lundberg (UPPMAX)	UPPMAX	Computational science Parallel programming Performance tuning Sensitive data	100	I help users with productivity, program performance, and parallelisation. I also work with allocations and with sensitive data questions