OPEN MPI

Man pages for Open MPI and Open MPI I/O routines are named according to C syntax, that is, they begin with the prefix MPI_, all in uppercase, and the first letter following the MPI_ prefix is also uppercase. The rest of the letters in the routine are all lowercase, for example, MPI_Comm_get_attr <#mpi-comm-get-attr>.

To fine-tune your Open MPI environment, you can either use arguments to the mpirun <#man1-mpirun> or mpiexec <#man1-mpiexec> commands, or you can use MCA parameters.

For more information on arguments, see the mpirun(1) <#man1-mpirun> man page.

For a complete listing of MCA parameters and their descriptions, issue the command ompi_info --all. See ompi_info(1) <#man1-ompi-info> for more information.

See MPI Errors <#mpi-errors> for details about error values.

See also:

2003-2026, The Open MPI Community