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Subject: Re: [OMPI users] btl_tcp_if_include setting
From: Jeff Squyres (jsquyres) (jsquyres_at_[hidden])
Date: 2013-10-14 10:42:05


More info on Ralph's comment is available here:

    http://www.open-mpi.org/faq/?category=tuning#setting-mca-params

On Oct 14, 2013, at 10:36 AM, Ralph Castain <rhc_at_[hidden]> wrote:

> 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.
>>
>>
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
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-- 
Jeff Squyres
jsquyres_at_[hidden]
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