MPI

MPI (Message Passing Interface) is a library, which is designed to provide the information exchange between different tasks of a distributed memory parallel program. It is presently the de-facto standard to implement message passing in programs written in Fortran, C or C++.

It consists of a group of functions which supports different communication operations.

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
Lilit Axner (PDC)	PDC	Computational fluid dynamics	50
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

Availability

All SNIC resources

Resources

Tutorials and slide sets

• A slide set by Pavan Balaji and Torsten Hoefler from 2013 introducing basic MPI concepts

• Lecture slides from course on Extreme scale systems by William Gropp at the University of Illinois. The following lectures deal with MPI: 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37. This is an extremely comprehensive introduction to MPI.

Standard specificatons

• Documentation of the MPI standard

License

Free (e.g. OpenMPI) and paid for (e.g. Intel MPI) implementations