[ofa-general] Re: OpenSM and fat tree

[Hal Rosenstock]

On Sat, 2008-05-10 at 21:51 +0300, Yevgeny Kliteynik wrote:
> Hal Rosenstock wrote:
> > Hi Yevgeny,
> > 
> > Is it possible that OpenSM's fat tree routing somehow depends on the
> > LIDs previously assigned ?
> 
> It depends only on the existence of the LIDs.
>
> > It seems that for a legitimate fat tree topology, the topology sometimes
> > won't come up as a fat tree if reassigning LIDs (-r) is not used.
> 
> That's odd...
> 
> > In addition to -r making fat tree work, certain routing algorithms seem
> > to also clear this out (without using -r). For example, if lash were run
> > and then ftree, it seems to work without doing the -r. (Haven't yet
> > tried updn).
> > 
> > Any ideas on this ? Should a bug be filed on this ? Thanks.
> 
> No ideas whatsoever. Please file a bug on this.

I filed this as bug 1031:
https://bugs.openfabrics.org/show_bug.cgi?id=1031

> It would be nice if I could reproduce it in simulation.

Yes, that would be nice; but I don't have a sim case.

-- Hal

> -- Yevgeny
> 
> > -- Hal
> > 
> > 
> > 
>