On Apr 4, 2011, at 10:30 AM, Borenstein, Bernard S wrote:
> We have added clusters with different interconnects and decided to build one
> OPENMPI 1.4.3 version to handle all the possible interconnects
> and run everywhere. I have two questions about this :
>
> 1 – is there a way for Openmpi to print out the interconnect it selected to
> use at run time? I am asking for an option similar to the –prot argument in
> hpmpi/platform mpi to print the interconnect selected. If this is not
> implemented, I would like to suggest it as an enhancement.
Unfortunately, it is not implemented. There's a long-standing ticket
requesting this feature -- it's unfortunately not a simple task, since Open MPI
opens connections lazily.
https://svn.open-mpi.org/trac/ompi/ticket/1207
> 2 – I have built Openmpi to allow tcp, mx, gm and ib. When running on a tcp
> only cluster and specifying –mca btl tcp,sm,self, I get errors like this
> [erb426:08967] Error in mx_init (error No MX device entry in /dev.)
Try also specifying:
mpirun --mca pml ob1 ...
See the README for details of the "ob1" vs. "cm" PMLs.
--
Jeff Squyres
jsquy...@cisco.com
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