[openib-general] [PATCH 2/4] osm: LMC > 0 is not supported by fat-tree routing.

[Hal Rosenstock]

On Tue, 2007-01-02 at 09:58, Yevgeny Kliteynik wrote:
> Hal Rosenstock wrote:
> > On Mon, 2007-01-01 at 08:31, Yevgeny Kliteynik wrote:
> >> LMC > 0 is not supported by fat-tree routing.
> > 
> > Might this be different in the future ? Can LMC > 0 be supported with
> > fat tree routing ?
> 
> Sure. We just have to figure out two things:
> 1. Figure out what should communication pattern look like 
> when LMC is not 0.

> 2. How to make fat-tree routing choose different paths for 
> different lids of the same CA, because otherwise using LMC>0 
> is pointless.

Not sure what you mean by this. How is this different for fat tree
routing than any other routing algorithm ? Maybe this is an issue for
all of them. 

Doesn't the PR/MPR request preselect the LID or the response determines
the LID to use ? The only issue I see is whether there needs to be a
separate GID for each possible LID.

-- Hal

> --Yevgeny.
> 
> >> Removing all the related code and adding check to
> >> inform the user in case LMC is set.
> >>
> >> Signed-off-by: Yevgeny Kliteynik <kliteyn at dev.mellanox.co.il>
> > 
> > Thanks. Applied.
> > 
> > I'll also add a note to this effect to the documentation shortly.
> > 
> > -- Hal
> >