[ofa-general] opensm routing

[Hal Rosenstock]

Jeff,

On Tue, 2008-06-10 at 15:08 -0700, Jeff Becker wrote:
> Hi all. I was looking into doing some subnet partitioning to separate 
> compute nodes from Lustre nodes, and I saw the following in 
> ~sashak/management.git on the OFA server, in opensm/doc/OpenSM_PKey_Mgr.txt
> 
> OpenSM Partition Management
> ---------------------------
> 
> Roadmap:
> Phase 1 - provide partition management at the EndPort (HCA, Router and Switch
>           Port 0) level with no routing affects.

This is where we currently are at. Partitioning works fine with this
"level" of support and has been used with IPoIB AFAIK although other
ULPs may support it too (e.g. RDMA CM based ones may get it for "free").

> Phase 2 - routing engine should take partitions into account.
> ...
> Phase 2 functionality:
> 
> The partition policy should be considered during the routing such that
> links are associated with particular partition or a set of
> partitions. Policy should be enhanced to provide hints for how to do
> that (correlating to QoS too). The exact algorithm is TBD.
> 
> 
> What is the status of Pkey-aware routing?

I'm unaware of any progress on phase 2 support. BTW, this is a dual
edged sword as to whether this would cause additional routing time on
the SM node and whether there are any worthwhile benefits.

-- Hal

>  Thanks.
> 
> -jeff
> 
> _______________________________________________
> general mailing list
> general at lists.openfabrics.org
> http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general
> 
> To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general