[Pkg-openmpi-maintainers] Bug#439730: Bug#439730: Bug#439730: Bug#439730: Please shut up libibverbs

[Manuel Prinz]

Am Mittwoch, den 29.08.2007, 07:03 -0500 schrieb Dirk Eddelbuettel:
> Empirically thinking, I'd say leave the patch as we have yet to meet actual
> infiniband users.  But we need the big fat warning somewhere. README.Debian
> is a start.

That's true. But I fear it's not enough for a change in runtime
behaviour. Maybe it's best to wait for feedback of pi**ed InfiniBand
users.

> In a way, though, the problem is with the ibverbs library, and I
> seem to recall that its upstream author told me he'd change the behaviour.
> But I can't recall the details now...

I'm not quite sure if it's really an libibverbs issue. I think the
warning is issued by OpenMPI's btl detection which seem to use the
fastest interconnect it can get.

I'll try to dig into that as soon as I find some spare time. (Not before
next week, I fear.) If it's OpenMPI, we might bring it up on upstream
devel list since we're clearly not the only distribution that has this
problem.

Best regards
Manuel