Here is an update...
It turns out that before I emailed you I was getting TWO kinds of messages.
One complaining about btl_openib and the other complaining about mtl_psm.
See below.mca: base: component_find: unable to open
/usr/lib64/openmpi/lib/openmpi/mca_btl_openib: perhaps a missing symbol, or
compiled for a different version of Open MPI? (ignored)mca: base: component_find: unable to open
/usr/lib64/openmpi/lib/openmpi/mca_mtl_psm: perhaps a missing symbol, or
compiled for a different version of Open MPI? (ignored)The fix you suggested DOES eliminate the openib complaints. My previous
message was incorrect on that point.
ok. this looks like the problem is your cluster. there is nothing
wrong with distributing software through an NFS export, but it looks
like your compute notes are missing libraries that are present on the
node where OpenMPI was compiled/installed.
this is something that you need to discuss with the people that manage
your cluster.
this should not be limited to LAMMPS, but be a problem with any MPI
based software.
axel.