Parallella Community

I have never used MPI. I do believe that mpirun/mpiexec do not exist on the Epiphany implementation and that another way is used. But I am not sure.

Sebraa is correct. Currently, mpirun/mpiexec do not exist for Epiphany. You can still use OpenMPI on the ARM host with mpirun/mpiexec if you want. Threaded MPI is the model most recently published. You can read about it in this paper: http://arxiv.org/abs/1506.05442, get some of the software here: https://www.parallella.org/2015/04/09/t ... hitecture/ and see other sample codes available here: https://github.com/USArmyResearchLab/mpi-epiphany

Threaded MPI requires offload semantics (host code) because Epiphany exists as a co-processor. The actual parallel portion that runs on the Epiphany looks more like your standard MPI code, however. But this could change in the future.

Yuk, this looks much more complicated than simply compiling and running "mpirun -np <nproc> <name_program> <input_file>" which is what I've been doing so far Maybe I'll wait a few more years before buying parallella until its MPI support will become more mature. Thanks for your help anyway.....