Hi I have installed Open MPI v 1.10.2 on two machines today using only the prefix-option for configure, and then doing 'make all install'.
On both machines i changed .bashrc to set PATH and LD_LIBRARY_PATH correctly. (I checked by running 'mpirun --version' and verifying that the output does indeed say 1.10.2) Password-less ssh is enabled on both machines in both directions. When i start mpirun form one machine (kraken) with a hostfile specifying the other machine ("triops slots=8 max-slots=8), it works: ----- jody@kraken ~ $ mpirun -np 3 --hostfile triopshosts uptime 12:24:04 up 7 days, 43 min, 17 users, load average: 0.06, 0.68, 0.65 12:24:04 up 7 days, 43 min, 17 users, load average: 0.06, 0.68, 0.65 12:24:04 up 7 days, 43 min, 17 users, load average: 0.06, 0.68, 0.65 ----- But when i start mpirun form triops with a hostfile specifying kraken ("kraken slots=8 max-slots=8"), it fails: ----- jody@triops ~ $ mpirun -np 3 --hostfile krakenhosts hostname [aim-kraken:21973] Error: unknown option "--hnp-topo-sig" input in flex scanner failed -------------------------------------------------------------------------- ORTE was unable to reliably start one or more daemons. This usually is caused by: * not finding the required libraries and/or binaries on one or more nodes. Please check your PATH and LD_LIBRARY_PATH settings, or configure OMPI with --enable-orterun-prefix-by-default * lack of authority to execute on one or more specified nodes. Please verify your allocation and authorities. * the inability to write startup files into /tmp (--tmpdir/orte_tmpdir_base). Please check with your sys admin to determine the correct location to use. * compilation of the orted with dynamic libraries when static are required (e.g., on Cray). Please check your configure cmd line and consider using one of the contrib/platform definitions for your system type. * an inability to create a connection back to mpirun due to a lack of common network interfaces and/or no route found between them. Please check network connectivity (including firewalls and network routing requirements). -------------------------------------------------------------------------- The same error happens when i use '--host kraken'. I verified that PATH and LD_LIBRARY_PATH are correctly set on both machines. And on both machines /tmp is readable, writeable and executable for all. The connection should be okay (i can do a ssh from kraken to triops and vice versa). Any idea what the problem is? Thank You Jody