[ofa-general] Re: Has anyone tried running RDS over 10GE / IWARP NICs ?

[Richard Frank]

Hmmm - so what happens with IWARP NIC when no buffer is posted on recv q 
and a message arrives ?


Or Gerlitz wrote:
> On Fri, Apr 4, 2008 at 7:06 PM, Roland Dreier <rdreier at cisco.com> wrote:
>   
>>   - Don't use IB-specific features (atomics, immediate data)
>>     
>
> and don't use RNRs as a means for HW based "flow control" mechanism.
> The current RDS implementation
> does not have a SW based flow control but rather does some sort of
> back pressure through SW based congestion
> management.  I think that to some extent it relies on RNRs which don't
> exist under iWARP.
>
> Or.
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