Programming Tutorials

Excellent Free Tutorials to Learn OpenMP

OpenMP (Open Multi-Processing) is an open standard API for Shared Memory parallelization in C, C++ and Fortran which consist of three primary API components: compiler directives, runtime routines and environment variables.

An OpenMP-parallelised application starts as a serial application that runs on a single compute core. When instructed by the programmer, the application spawns a number of threads, which can run concurrently on separate cores. Thus, work can be distributed to leverage more resources.

Here’s our recommended OpenMP tutorials.


1. OpenMP by Blaise Barney

This tutorial is one of the eight tutorials in the 4+ day “Using LLNL’s Supercomputers” workshop. It is geared to those who are new to parallel programming with OpenMP. Basic understanding of parallel programming in C or Fortran is required.

Read the tutorial


2. Guide into OpenMP: Easy multithreading programming for C++ by Joel Yliluoma

This document attempts to give a quick introduction to OpenMP, a simple C/C++/Fortran compiler extension that allows to add parallelism into existing source code without significantly having to rewrite it.

Read the guide


3. OpenMP by NeSI

This tutorial helps you learn what threads are, learn how to leverage OpenMP to accelerate your C/C++ code, and how to learn to compile C/C++ code with OpenMP enabled.

Read the tutorial


4. A “Hands-on” Introduction to OpenMP by Tim Mattson and Larry Meadows

This tutorial covers creating threads, synchronization, parallel loops, synchronize single masters and stuff, data environment, schedule your for and sections, memory mode, and OpenMP 3.0 and tasks.

Read the tutorial


5. Introduction to OpenMP Programming: a Tutorial by Norman Matloff

This tutorial on OpenMP programming is now a (more or less independent) chapter in the author’s open-source text-book on parallel programming.

Read the book (see Chapter 4)


There’s many other useful tutorials listed at https://www.openmp.org/resources/tutorials-articles/.


All tutorials in this series:

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ClojureScriptCompiler for Clojure that targets JavaScript
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JArray programming language based primarily on APL
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