[openib-general] RFC userspace / MPI multicast support

[Matt Leininger]

On Thu, 2006-04-20 at 13:09 -0700, Sean Hefty wrote:
> >  Not always.  For most of the older VAPI based stack we never turned on
> >IPoIB (or did and it didn't work).  I don't think we want to assume
> >IPoIB is always set up when MPI is running.
> 
> This means that you can't use the rdma_cm to establish connections.

  Requiring IPoIB to be running for MPI to work is a new dependency that
users are not accustomed to.  Maybe we need to do this through the cm
rather than rdma_cm.  We shouldn't require IPoIB to be running for MPI
to use IB.


  - Matt