[Users] Trouble with subnet_prefix

[Orion Poplawski]

On 04/30/2013 11:57 AM, Hal Rosenstock wrote:
>
>
> On Tue, Apr 30, 2013 at 1:35 PM, Orion Poplawski <orion at cora.nwra.com
> <mailto:orion at cora.nwra.com>> wrote:
>
>     On 04/30/2013 11:16 AM, Hal Rosenstock wrote:
>
>
>         Hi,
>         On Tue, Apr 30, 2013 at 11:23 AM, Orion Poplawski <orion at cora.nwra.com
>         <mailto:orion at cora.nwra.com>
>         <mailto:orion at cora.nwra.com <mailto:orion at cora.nwra.com>>> wrote:
>
>              I'm going to have some overlapping IB networks,
>
>         What do you mean by overlapping IB networks ? Unlike IP subnets, when IB
>         subnets overlap, they are one subnet (managed by one master SM which
>         assigns a
>         single subnet prefix).
>
>
>     What I mean are a couple machines connected to two different infiniband
>     networks.
>
> With 2 separate SMs, one for each subnet ?

That was the idea.  one subnet is just between two machines.

>
>     At this point there is one switch and two machines each with a dual port
>     card.  Both ports of each card are connected to the switch.
>
> Just one switch or one switch per subnet ?

One switch per subnet.  Well one is just two machines connected directly.

-- 
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
3380 Mitchell Lane                       orion at nwra.com
Boulder, CO 80301                   http://www.nwra.com