[Users] Fully connected topology support

[Hal Rosenstock]

Hi Alexandre,

OpenSM supports multiple HCAs/multiple ports in end nodes. By fully
connected, sounds like you mean back to back HCAs on separate subnets in
which case each per subnet OpenSM instance is only seeing 1 port on one of
the HCAs in the end node.

Which tools are you referring to in terms of LID resolution ?

I'm not familiar with Windows 2012 support.

-- Hal


On Wed, May 24, 2017 at 6:54 PM, Alexandre Malotchko <a.malotchko at gmail.com>
wrote:

> Hello,
>
> We have tried to create fully connected topology using 4/5 nodes each with
> 2 dual ports HCAs. In the case of 4 nodes, this is 6 separate subnets with
> 6 SM instances.
>
> It seems that on Linux (Ubuntu 16.04), none of the tools that do LID
> resolution work and in some instances -if SM host node and remote node both
> on mlx4_1 (second) device IPoIB does not come on.
>
> On windows 2012, also configuring separate subnets etc, results on the
> network being briefly up but then logs fills with errors and IPoIB is
> killed.
>
> Before we look into this more closely - does OpenSM support multiple HCA /
> multiple ports configuration and their permutations ?
>
> Thank you in advance, AM
>
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