[mvapich-discuss] MTU size on homogenous mlx4 QDR systems

[Peter Kjellstrom]

On Friday 11 December 2009, Bernd Kallies wrote:
> We use "old" MT25208 InfiniHost III and MT26418 ConnectX (4x DDR per
> port, 2 ports per host) with 64k MTUs, as shipped by our vendor.

You're confused, the OP likely refered to the IB MTU (not ethernet like IPoIB 
MTU used with the tcp/ip stack). 

/Peter

...
> Sincerely BK
>
> On Fri, 2009-12-11 at 18:19 +0100, Christian Guggenberger wrote:
> > Dear all,
> >
> > this is probably a bit offtopic for this list. However, mvapich
> > developers and users could hopefully give some answers if enabling 4K
> > MTUs
> > on recent mlx4 adapters is a good idea or not.
> >
> > cheers.
> >  - Christian
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