Simple job (standard compute pi, cpi.c), one machine with 4 cores - OpenMPI built with gcc 4.3.2 and using gcc 4.3.2.
mpirun -x FOO --mca btl tcp,self -np 4 -machinefile hosty ./a.out [hosty:11202] [[12796,0],0] ORTE_ERROR_LOG: Not implemented in file ../../../../.././orte/mca/rmaps/round_robin/rmaps_rr.c at line 122 [hosty:11202] [[12796,0],0] ORTE_ERROR_LOG: Not implemented in file ../../../.././orte/mca/rmaps/base/rmaps_base_map_job.c at line 88 [hosty:11202] [[12796,0],0] ORTE_ERROR_LOG: Not implemented in file ../../../.././orte/mca/plm/base/plm_base_launch_support.c at line 103 [hosty:11202] [[12796,0],0] ORTE_ERROR_LOG: Not implemented in file ../../../../.././orte/mca/plm/rsh/plm_rsh_module.c at line 1013 ? DM