mpi-binding package for golang. It is created and tested for openmpi and should work with all other mpi libraries.

It is tested for golang go1.0.2,go1.0.3 and Open MPI v1.6.2 see

http://www.open-mpi.org/doc/v1.6/

go get github.com/marcusthierfelder/mpi

In order to generate the binding library you need to install mpi on you system. On ubuntu/debain use:

sudo apt-get install openmpi-dev openmpi-common

To install this library, cgo needs the location of mpi-header (mpi.h) and the mpi-library (mpi.a). Sometimes the system already "knows" these locations. If not, you have to find them and export the path. On my system I needed:

export C_INCLUDE_PATH=/usr/include/openmpi
export LD_LIBRARY_PATH=/usr/lib/openmpi/lib

On some machines the compiler does not use LD_LIBRARY_PATH, then try:

export LIBRARY_PATH=/usr/lib/openmpi/lib

simple example which writes the rank of each processor and the total number of mpi-jobs

simple example which communicates a small number of integer between all processors

simple send recv example

fancy scalarwave example in 3d with goroutines and mpi decomposition. you can choose between several integrators and orders of finite differencing. there are only simple boundary and output options. does not work properly yet.

note: this is not optimised, but can be used to test clusters for scaling etc.