It won't be a configure switch, but you can put the following in your default 
system mca param file:

btl_tcp_if_include=ipogif0

You'll find that file in <prefix>/etc - it is called openmpi-mca-params.conf. 
Users won't have to enter it after that since we pick that file up by default.


On Oct 14, 2013, at 7:27 AM, Ray Sheppard <rshep...@iu.edu> wrote:

> Hi,
>   I am setting up version 1.7.2 for a Cray XE-6.  The build nodes have 
> different interfaces than the compute nodes. I have been able to set it up, 
> but users need to embed the following into their mpirun command:
> --mca btl_tcp_if_include ipogif0 
> 
> Currently, The ompi_info shows as below.  I have been trying to figure out 
> the correct configure switch to add to the build to remove the need for a 
> permanent mpirun switch, but seem to be not getting it right.  Any 
> suggestions are welcomed. Thanks,
>      Ray
> 
> 
>  ompi_info --param btl all
>                  MCA btl: parameter "btl_tcp_if_include" (current value: "",
>                           data source: default, level: 1 user/basic, type:
>                           string)
>                           Comma-delimited list of devices and/or CIDR
>                           notation of networks to use for MPI communication
>                           (e.g., "eth0,192.168.0.0/16").  Mutually exclusive
>                           with btl_tcp_if_exclude.
>                  MCA btl: parameter "btl_tcp_if_exclude" (current value:
>                           "127.0.0.1/8,sppp", data source: default, level: 1
>                           user/basic, type: string)
>                           Comma-delimited list of devices and/or CIDR
>                           notation of networks to NOT use for MPI
>                           communication -- all devices not matching these
>                           specifications will be used (e.g.,
>                           "eth0,192.168.0.0/16").  If set to a non-default
>                           value, it is mutually exclusive with
>                           btl_tcp_if_include.
> 
> 
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