On Nov 18, 2010, at 7:03 PM, HeeJin Kim wrote:

> I'm using Mellanox infiniband network card and trying to run it with openmpi.
> The problem is that I can connect and communicate between nodes, but I'm not 
> sure whether it is in a correct state or not.
> 
> I have two version of openmpi, one is compiled with mca-btl-openib and the 
> other is without btl-openib.(I checked it in ompi_info)

You should ensure that the version of Open MPI available on all nodes is the 
same exact version.

> And my jobs are running well using the openmpi without btl-openib, 
> but when I run the exactly same job using openmpi with btl-openmpi, I meet 
> the  following error.
> 
>    mlx4: There is a mismatch between the kernel and the userspace libraries: 
> Kernel does not support XRC. Exiting.

At first blush, this sounds like a problem with your OFED installation.  You 
should contact your IB vendor for assistance.

-- 
Jeff Squyres
jsquy...@cisco.com
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/


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