[ofa-general] Re: [PATCH draft, untested] ehca srq emulation (for IPoIB CM)

[Sean Hefty]

> Basically, I think that because of lack of SW level flow control,
> generally IPoIB CM without SRQ does not make sense because of
> the scalabilty problems.

Most clusters are only 16-32 nodes.  If IPoIB CM without SRQ can support 
this number of systems and outperforms IPoIB UD mode, then I do believe 
that it makes sense.  IPoIB CM support, with or without SRQ, is less 
scalable than IPoIB UD mode, but it was still added because it provided 
a benefit under most conditions.

- Sean