Hi, Just found the following ticket which answers my question: https://svn.open-mpi.org/trac/ompi/ticket/4044
Sorry for spam. :/ Regards Christoph ----- Ursprüngliche Mail ----- Von: "Christoph Niethammer" <nietham...@hlrs.de> An: "Open MPI Developers" <de...@open-mpi.org> Gesendet: Mittwoch, 8. Januar 2014 14:49:54 Betreff: Missing --bycore option in Open MPI 1.7.? Hello Using Open MPI 1.7.3 I got the following error message when executing mpirun -np 16 --bycore /bin/hostname mpirun: Error: unknown option "--bycore" The option is documented in the man pages and with Open MPI 1.6.5 everything works fine. For --bysocket I get the same error but --bynode seems to be working. Is this option on the way to be removed? Regards Christoph
