I wanted to compare MPICH and OpenMPI. MPICH works fine. So I installed OpenMPI the same way (configure, make, make install). The commands are found in the OpenMPI installation directory.
When I tried to run programs I was a little bit confused, that there seems not to be a default hosts-file like in MPICH. I included it in the command with "--hostfile".
When I now want to run my first test with
mpirun -np 2 --hostfile /home/stephan/mpd.hosts
I get the error-message:
orted: command not found
The "orted"-executable resides as well as the "mpirun"- and "mpiexec"-executables in the directory /home/stephan/openmpi-install. "orted" is also found by "which orted".
What might be the problem? How does "orted" work? I'm not conscious about anything equivalent in MPICH...
Thanks in advance for your help!
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