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From: Reese Faucette (reese_at_[hidden])
Date: 2007-01-03 16:03:39

> $ mpirun --prefix /usr/local/openmpi-1.2b2 --hostfile ./h1-3 -np 1 --mca
> btl mx,sm,self ./cpi
> [node-1:09704] mca: base: component_find: unable to open mtl mx: file
> not found (ignored)
> [node-1:09704] mca: base: component_find: unable to open btl mx: file
> not found (ignored)

This in particular is almost certainly a library path issue. A quick way to
check to see if your LD_LIBRARY_PATH is correct is to run:
$ mpirun <whatever args you want to test> ldd

If things are good, you will get a first line like: => /opt/mx/lib/ (0xb7f1d000)

If not, it will tell you explicitly. Since all you specified is
the --prefix line, I'm not surprised is not found in this