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
