Best Practice Guide to Program Hybrid MPI + OpenMP

30 Mar 2017

Another new Best Practice Guide has been published by INTERTWinE - this time discussing hybrid MPI + OpenMP Programming.

Hybrid application programs using MPI + OpenMP are now commonplace on large HPC systems. This Best Practice Guide describes:

the main motivations for using this combination of programming models, and why and how these potential benefits can be realized in application codes;
the possible downsides of MPI + OpenMP programs, covering software engineering issues and performance pitfalls;
the technical details of thread support in the MPI library;
five different styles of MPI + OpenMP program and their relative advantages and disadvantages;
some best practice tips for developers of hybrid MPI + OpenMP applications.

INTERTWinE