On Oct 24, 2007, at 9:23 PM, Dirk Eddelbuettel wrote:
| If I had to guess, the systems where you don't see the warning are
| systems that have OFED loaded.
I am pretty sure that none of the systems (at work) have IB
hardware. I am
very sure that my home systems do not, and there the 'btl = ^openib'
successfully suppresses the warning --- whereas at work it doesn't.
Note that you don't need to have IB hardware -- all you need is the
OFED software loaded. I don't know if Debian ships the OFED
libraries by default...? In particular, look for libibverbs:
[18:28] svbu-mpi:~/svn/ompi % ldd $bogus/lib/openmpi/mca_btl_openib.so
libibverbs.so.1 => /usr/lib64/libibverbs.so.1
(0x0000002a956c2000)
libnsl.so.1 => /lib64/libnsl.so.1 (0x0000002a957cd000)
libutil.so.1 => /lib64/libutil.so.1 (0x0000002a958e4000)
libm.so.6 => /lib64/tls/libm.so.6 (0x0000002a959e8000)
libpthread.so.0 => /lib64/tls/libpthread.so.0
(0x0000002a95b6e000)
libc.so.6 => /lib64/tls/libc.so.6 (0x0000002a95c83000)
libdl.so.2 => /lib64/libdl.so.2 (0x0000002a95eb8000)
/lib64/ld-linux-x86-64.so.2 (0x000000552aaaa000)
However, I note something in your last reply that I may have missed
before -- can you clarify a point for me: are you saying that on your
home machine, this generates the openib "file not found" warning:
mpirun -np 2 hello
but this does not:
mpirun -np 2 --mca btl ^openib hello
If so, can you confirm which version of Open MPI you are running?
The only reason that I can think that that would happen is if you are
running a trunk nightly download of Open MPI... If not, then there's
something else going on that would be worth understanding.
--
Jeff Squyres
Cisco Systems
