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Subject: Re: [OMPI users] btl_tcp_if_include setting
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-10-14 10:36:52


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 <rsheppar_at_[hidden]> 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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