[ewg] Re: [ofa-general] OFED Jan 28 meeting summary on RC3readiness

Shirley Ma mashirle at us.ibm.com
Wed Jan 30 06:13:24 PST 2008


On Wed, 2008-01-30 at 14:03 -0800, Sean Hefty wrote:
> >The main reason is not the bugs but the features supported by IBM - CM
> >support for non SRQ and 4K MTU
> 
> These are entirely my opinions, but...
> 
> OFED isn't even at RC1 if it's not at feature freeze...
> 
> OFED has moved well beyond trying to provide an enterprise distribution to
> simply providing an experimental code base more concerned with including the
> latest and greatest features.  It's become the staging area for getting the code
> into shape for merging upstream, which wasn't what I thought was the purpose of
> OFED.
> 
> - Sean

Hello Sean,

	Only 4K MTU patch hasn't been upper stream. nonSRQ is upper stream
already. The IPoIB implementation is hard coded and limit the packet
size to 2048, which prevents IBM eHCA2 4K MTU from performing. I would
say it's a bug fix from that prospective. And the majority of the code
is making IPoIB-CM S/G code to be more generic so IPoIB-UD S/G can be
reused it. It doesn't hurt 2K MTU much.

Thanks
Shirley




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