[Pkg-openmpi-maintainers] Ugly error messages when using openmpi

[Ondrej Certik]

> These are OpenMPI "problems". OpenMPI uses InfiniBand (libibverbs) as
> transport, if it's not available, it issues this warning and falls back
> to TCP. We know about this and had a discussion about it which you can
> find in http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=439730.
>
> The current solution is to disable InfiniBand as documented in
> README.Debian.
>
> I'm sorry that the current solution is quite confusing for people new to
> OpenMPI. But we decided to leave it this way since disabling it by
> default would "break" InfiniBand, while having the message does not
> affect the functionality of the package at all.

I see. Maybe a mention to look into README.Debian for more info could
be added to the error message.

I uncommented the line:

 # Disable the use of InfiniBand
   btl = ^openib

in /etc/openmpi/openmpi-mca-params.conf  and one of the error messages
indeed did disappear, but the other one still remains:

$ python
Python 2.4.4 (#2, Aug 16 2007, 02:03:40)
[GCC 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from petsc4py.PETSc import Mat
[fuji:06568] mca: base: component_find: unable to open osc pt2pt: file
not found (ignored)
>>>


Is it still openmpi related?

Ondrej